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1 Observations on transition metal free biaryl coupling: Potassium tert- butoxide alone promotes the reaction without diamine or phenanthroline catalysts. James Cuthbertson, Vincent James Gray and Jonathan D. Wilden* Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK E-mail: [email protected] SUPPLEMENTARY INFORMATION General information……………………………………………………………………….....1 General procedure for 1,10-phenanthroline purification and cross-coupling reactions…......2 Characterisation of cross-coupled products……………………………………………….....2 1 H and 13 C NMR spectra…………………………………………………………….…….....6 General Information Potassium tert-butoxide (98+%) purchased from Acros Organics was used without further purification. Anhydrous benzene (99.8%, SureSeal TM ) was purchased from Sigma-Aldrich and used without further purification using standard Schlenk techniques. 1,10-Phenanthroline (anhydrous, 99%) was purchased from Alfa Aesar. Ammonia solution (28% solution in water) was purchased from VWR International. All other commercially available aromatic iodides were used without further purification. Analysis by thin layer chromatography (TLC) was conducted using aluminium-backed plates pre-coated (250 μm) with silica (Merck, TLC silica gel 60 F 254 ). TLC plates were visualised using ultraviolet light (254 nm), and then using KMnO 4 solution and heating. Flash chromatography was performed using silica gel (Merck Kieselgel 60) 0.04/0.063mm (230-400 mesh) silica gel. 1 H and 13 C NMR spectra were recorded on a Bruker AMX500 or AMX600 using CDCl 3 as the deuterated solvent. Coupling constants are reported in Hertz (Hz). 13 C NMR spectra were recorded at 125 MHz or 150 MHz on either a Bruker AMX500 or AMX600 MHz spectrometer, and are reported in ppm. Mass spectra were measured on a Thermo Finnigan MAT900 XP operating in EI and CI mode. Melting points were measured using Gallenkamp apparatus and are uncorrected. Electronic Supplementary Material (ESI) for Chemical Communications This journal is © The Royal Society of Chemistry 2014
Transcript
Page 1: Observations on transition metal free biaryl coupling: Potassium … · 2014-01-13 · 1 Observations on transition metal free biaryl coupling: Potassium tert- butoxide alone promotes

1

Observations on transition metal free biaryl coupling: Potassium tert-

butoxide alone promotes the reaction without diamine or phenanthroline

catalysts.

James Cuthbertson, Vincent James Gray and Jonathan D. Wilden*

Department of Chemistry, University College London, 20 Gordon Street, London,

WC1H 0AJ, UK

E-mail: [email protected]

SUPPLEMENTARY INFORMATION

General information……………………………………………………………………….....1

General procedure for 1,10-phenanthroline purification and cross-coupling reactions…......2

Characterisation of cross-coupled products……………………………………………….....2 1H and

13C NMR spectra…………………………………………………………….…….....6

General Information

Potassium tert-butoxide (98+%) purchased from Acros Organics was used without further purification.

Anhydrous benzene (99.8%, SureSealTM

) was purchased from Sigma-Aldrich and used without further

purification using standard Schlenk techniques.

1,10-Phenanthroline (anhydrous, 99%) was purchased from Alfa Aesar. Ammonia solution (28%

solution in water) was purchased from VWR International. All other commercially available aromatic

iodides were used without further purification. Analysis by thin layer chromatography (TLC) was

conducted using aluminium-backed plates pre-coated (250 μm) with silica (Merck, TLC silica gel 60 F254).

TLC plates were visualised using ultraviolet light (254 nm), and then using KMnO4 solution and heating.

Flash chromatography was performed using silica gel (Merck Kieselgel 60) 0.04/0.063mm (230-400

mesh) silica gel.

1H and

13C NMR spectra were recorded on a Bruker AMX500 or AMX600 using CDCl3 as the deuterated

solvent. Coupling constants are reported in Hertz (Hz). 13

C NMR spectra were recorded at 125 MHz or

150 MHz on either a Bruker AMX500 or AMX600 MHz spectrometer, and are reported in ppm. Mass

spectra were measured on a Thermo Finnigan MAT900 XP operating in EI and CI mode. Melting points

were measured using Gallenkamp apparatus and are uncorrected.

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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2

Purification procedure for commercially-available 1,10-phenanthroline

1,10-phenanthroline (anhydrous, 99%) purchased from Alfa Aesar (3.0 g, 16.6 mmol, 1.0 eq.) was

dissolved in CH2Cl2 (100 mL) and methanesulfonic acid (3.2 g, 33.3 mmol, 2.0 eq.) was added. This

mixture was then transferred to a separating funnel and washed with ammonia (28% sol’n in water) (3 x

100 mL) in successive portions. The organic layer was then separated, dried over MgSO4, filtered and

concentrated in vacuo to afford a white solid. This solid was consequently recrystallised from

chloroform/petrol to afford the product as colourless plates which were filtered and dried in a vacuum

oven overnight (2.3 g, 77%); m.p. 115–116 °C (CH3Cl/PE) (lit. 118 °C from PE).1 M.p. without

purification was 90–99 °C.

General procedure for the arylation of benzene with aryl iodides.

Potassium tert-butoxide (101 mg, 0.90 mmol, 4.0 eq), aryl iodide (0.225 mmol, 1.0 eq) and benzene (2.4

mL, 120 eq.) were stirred in a flame-dried, pressure resistant tube for 6 h under an argon atmosphere. The

external bath temperature was set at 170 oC. After cooling to rt, the reactions were quenched with 1 M

aqueous HCl solution (5 mL), and diluted with Et2O (5 mL). The organic layer was separated, and the

aqueous layer extracted three times with Et2O (3 x 10 mL). The organic layers were combined, washed

with brine (10 mL) and dried over MgSO4. The organic portion was filtered, concentrated in vacuo and

purified via flash chromatography (100% petroleum ether 40-60 oC).

2

Biphenyl 2a

Synthesised according to the general procedure using iodobenzene as the limiting reagent. White solid,

77%; m.p.; 69–70 oC (lit. 69-70

oC)

3;

1H NMR (600 MHz, CDCl3) δH 7.60 (d, J = 7.8 Hz, 4H), 7.45 (t, J

= 7.6 Hz, 4H), 7.35 (t, J = 7.1 Hz, 2H); 13

C NMR (150 MHz, CDCl3) δC 141.3 (Cq), 128.9 (CH), 127.4

(CH), 127.3 (CH); LRMS (EI) 154 (100), 128 (4), 115 (4) 76 (5). Data in agreement with literature

values.4

1 C.W.N. Cumper, D.G. Redford, A.I. Vogel, J. Chem. Soc., 1962, 1158.

2 3-Phenyl pyridine purified via column chromatography using 0-2% MeOH/CH2Cl2.

3 K.C. Chan, R.L. Ruang, J. Chem. Soc., 1965, 2649.

4 M.E. Buden, J.F. Guastavino, R.A. Rossi, Org. Lett., 2013, 1174.

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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3

4-Methylbiphenyl 2b

Synthesised according to the general procedure using 4-iodotoluene as the limiting reagent. White solid,

66%; m.p.; 45–46 oC (lit. 46

oC)

5;

1H NMR (600 MHz, CDCl3) δH 7.60 (d, J = 8.3 Hz, 2H), 7.51 (d, J =

8.1 Hz, 2H), 7.44 (t, J = 7.6 Hz, 2H), 7.34 (t, J = 7.5 Hz, 1H), 7.27 (d, J = 7.9 Hz, 2H), 2.41 (s, 3H); 13

C

NMR (150 MHz, CDCl3)* δC 141.3 (Cq), 138.5 (Cq), 137.2 (Cq), 129.6 (CH), 128.8 (CH), 127.1 (CH),

127.1 (CH), 21.2 (CH3); LRMS (EI) 168 (100), 167 (52), 152 (18), 115 (6), 91 (4). Data in agreement

with literature values.4

*Two signals are coincident.

4-Methoxybiphenyl 2c

Synthesised according to the general procedure using 4-iodoanisole as the limiting reagent. White solid,

48%; m.p.; 84–85 oC (lit. 84-85

oC)

6;

1H NMR (600 MHz, CDCl3) δH 7.57-7.53 (m, 4H), 7.42 (t, J = 7.6

Hz, 2H), 7.31 (t, J = 7.4 Hz, 1H), 6.99 (d, J = 8.8 Hz, 2H), 3.86 (s, 3H); 13

C NMR (150 MHz, CDCl3) δC

159.2 (Cq), 140.9 (Cq), 133.9 (Cq), 128.8 (CH), 128.3 (CH), 126.9 (CH), 126.8 (CH), 114.3 (CH), 55.5

(CH3); LRMS (EI) 184 (100), 169 (31), 152 (7), 141 (37), 115 (29). Data in agreement with literature

values.4

4-Fluorobiphenyl 2d

Synthesised according to the general procedure using 4-fluoroiodobenzene as the limiting reagent. White

solid, 64%; m.p.; 69–70 oC (lit. 69

oC)

7;

1H NMR (600 MHz, CDCl3) δH 7.56-7.54 (m, 4H), 7.44 (t, J =

7.5 Hz, 2H), 7.35 (t, J = 7.4 Hz, 1H), 7.13 (t, J = 8.6 Hz, 2H); 13

C NMR (150 MHz, CDCl3) δC 163.4 (Cq),

161.8 (Cq), 140.4 (Cq), 137.4 (d, J = 3.2 Hz) (Cq), 128.9 (CH), 128.8 (d, J = 8.0 Hz) (CH), 127.4 (CH),

5 T. Mino, Y. Shirae, M. Sakamoto, T. Fujita, J. Org. Chem., 2005, 2191.

6 M. Kuriyama, S. Matsuo, O, Onomura, M. Shinozawa, Org. Lett., 2013, 2716.

7 A.L. Allred, L.W. Bush, Tetrahedron, 1968, 6883.

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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127.1 (CH), 115.7 (d, J = 21.3 Hz) (CH); LRMS (EI) 172 (100), 152 (5). Data in agreement with

literature values.4

3,5-Dimethylbiphenyl 2e

Synthesised according to the general procedure using 5-iodo-m-xylene as the limiting reagent. Colourless

oil, 48%; 1H NMR (600 MHz, CDCl3) δH 7.58 (dd, J = 8.3, 1.3 Hz, 2H), 7.42 (t, J = 7.5 Hz, 2H), 7.33 (t, J

= 7.4 Hz, 1H), 7.21 (br s, 2H), 7.00 (br s, 1H), 2.38 (s, 6H); 13

C NMR (150 MHz, CDCl3) δC 141.6 (Cq),

141.4 (Cq), 138.4 (Cq), 129.0 (CH), 128.7 (CH), 127.3 (CH), 127.2 (CH), 125.2 (CH), 21.5 (CH3); LRMS

(EI) 182 (100), 167 (36), 152 (11), 115 (5). Data in agreement with literature values.8

4-tert-butylbiphenyl 2f

Synthesised according to the general procedure using 1-tert-butyl-4-iodobenzene as the limiting reagent.

White solid, 30%; m.p.; 48–49 oC (lit. 48-49

oC);

1H NMR (500 MHz, CDCl3) δH 7.60 (d, J = 7.2 Hz, 2H),

7.55 (d, J = 8.4 Hz, 2H), 7.47 (d, J = 8.4 Hz, 2H), 7.43 (t, J = 7.5 Hz, 2H), 7.33 (t, J = 7.3 Hz, 1H), 1.37

(s, 9H); 13

C NMR (125 MHz, CDCl3) δC 150.3 (Cq), 141.1 (Cq), 138.4 (Cq), 128.7 (CH), 127.1 (CH),

127.0 (CH), 126.8 (CH), 125.8 (CH), 34.6 (Cq), 31.4 (CH3); LRMS (EI) 210 (36), 195 (100), 178 (11),

167 (19), 152 (9), 115 (4). Data in agreement with literature values.9

8 X. Li, X-Y. Yan, H-H. Chang, L-C. Wang, Y. Zhang, W-W. Chen, Y-W. Li, W-L. Wei, Org. Biomol. Chem. 2012, 10, 495.

9 (a) M.J. Inglesias, A. Prieto, M.C. Nicasio, Org. Lett., 2012, 4318. (b) X-H. Fan, L-M. Yang, Eur. J. Org. Chem., 2010, 2457.

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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5

p-Terphenyl 2g

Synthesised according to the general procedure using 1,4-diiodobenzene as the limiting reagent. White

solid, 21%; m.p.; 212–213 oC (lit. 212-213

oC)5;

1H NMR (500 MHz, CDCl3) δH 7.68 (s, 4H), 7.65 (d, J =

7.1 Hz, 4H), 7.46 (t, J = 7.4 Hz, 4H), 7.36 (t, J = 7.4 Hz, 2H); 13

C NMR (125 MHz, CDCl3) δC 140.8 (Cq),

140.2 (Cq), 128.9 (CH), 127.6 (CH), 127.4 (CH), 127.1 (CH); LRMS (EI) 230 (100), 195 (15), 152 (13),

115 (9). Data in agreement with literature values.4

4-Iodobiphenyl 2h

Synthesised according to the general procedure using 1,4-diiodobenzene as the limiting reagent. White

solid, 30%; m.p.; 107–108 oC (lit. 109-110

oC)

10;

1H NMR (500 MHz, CDCl3) δH 7.77 (m, 2H), 7.55 (m,

2H), 7.44 (m, 2H), 7.38-7.32 (m, 3H); 13

C NMR (125 MHz, CDCl3) δC 140.8 (Cq), 140.1 (Cq), 137.9 (CH),

129.1 (CH), 129.0 (CH), 127.8 (CH), 127.0 (CH), 93.1 (Cq); LRMS (EI) 280 (100), 152 (55). Data in

agreement with literature values.11

3-Phenylpyridine 2i

Synthesised according to the general procedure using 3-iodopyridine as the limiting reagent. Colourless

oil, 37%; NMR (600 MHz, CDCl3) δH 8.87 (br s, 1H), 8.61 (br s, 1H), 7.89 (dt, J = 7.9, 1.7 Hz, 1H), 7.59

(d, J = 7.1 Hz, 2H), 7.49 (t, J = 7.5 Hz, 2H), 7.43-7.37 (m, 2H); 13

C NMR (125 MHz, CDCl3) δC 148.5

(CH), 148.3 (CH), 137.9 (Cq), 136.9 (Cq), 134.6 (CH), 129.2 (CH), 128.2 (CH), 127.3 (CH), 123.8 (CH);

LRMS (EI) 155 (100), 127 (8), 115 (3). Data in agreement with literature values.4

10

Y. Qin, W. Wei, M. Luo, Synlett, 2007, 2410 11

K. Kulbitski, G. Nisnevich, M. Gandelman, Adv. Synth. Catal., 2011, 353, 1438.

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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Biphenyl 2a

9 8 7 6 5 4 3 2 1 ppm1.55

7.26

7.34

7.35

7.36

7.43

7.45

7.46

7.59

7.61

1.9

8

4.0

1

4.0

0

NAME JC871600EXPNO 10

PROCNO 1

Date_ 20130923

Time 9.23INSTRUM AV600

PROBHD 5 mm CPDCH 13C

PULPROG zg30

TD 98682SOLVENT CDCl3

NS 8

DS 0

SWH 12335.526 Hz

FIDRES 0.125003 Hz

AQ 3.9999604 sec

RG 36

DW 40.533 usec

DE 10.48 usecTE 298.0 K

D1 1.00000000 sec

TD0 1

======== CHANNEL f1 ========

NUC1 1H

P1 11.40 usec

PL1 1.00 dB

PL1W 13.76731014 WSFO1 600.1337061 MHz

SI 32768

SF 600.1300116 MHz

WDW EMSSB 0

LB 0.30 Hz

GB 0

PC 1.40

JC871PROTON.ucl CDCl3 /v/Bruker/TOPSPIN jdw 14

200 180 160 140 120 100 80 60 40 20 0 ppm

76.93

77.14

77.35

127.29

127.37

128.87

141.34 NAME Sep23-2013

EXPNO 11PROCNO 1Date_ 20130923Time 9.42INSTRUM AV600PROBHD 5 mm CPDCH 13CPULPROG zgpg30TD 78942

SOLVENT CDCl3NS 128DS 0SWH 43859.648 HzFIDRES 0.555593 HzAQ 0.8999888 secRG 1030

DW 11.400 usecDE 20.22 usecTE 298.0 KD1 2.00000000 sec

D11 0.03000000 secTD0 1

======== CHANNEL f1 ========NUC1 13CP1 9.80 usecPL1 5.00 dB

PL1W 26.76886177 WSFO1 150.9201628 MHz

======== CHANNEL f2 ========CPDPRG2 waltz16NUC2 1H

PCPD2 70.00 usecPL2 1.00 dBPL12 17.23 dBPL13 20.00 dBPL2W 13.76731014 WPL12W 0.32798135 W

PL13W 0.17332016 WSFO2 600.1324005 MHzSI 65536SF 150.9027930 MHzWDW EM

SSB 0LB 1.00 HzGB 0PC 1.40

126127128 ppm

127.29

127.37

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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7

4-Methylbiphenyl 2b

9 8 7 6 5 4 3 2 1 ppm

2.42

7.26

7.27

7.28

7.33

7.35

7.36

7.43

7.45

7.46

7.51

7.52

7.60

7.61

3.0

3

1.9

5

0.9

8

2.0

3

1.9

6

2.0

0NAME Sep25-2013EXPNO 20

PROCNO 1

Date_ 20130925

Time 10.40INSTRUM AV600

PROBHD 5 mm CPDCH 13C

PULPROG zg30

TD 98682SOLVENT CDCl3

NS 8

DS 0

SWH 12335.526 Hz

FIDRES 0.125003 Hz

AQ 3.9999604 sec

RG 28.5

DW 40.533 usec

DE 10.48 usecTE 298.0 K

D1 1.00000000 sec

TD0 1

======== CHANNEL f1 ========

NUC1 1H

P1 11.40 usec

PL1 1.00 dB

PL1W 13.76731014 WSFO1 600.1337061 MHz

SI 32768

SF 600.1300116 MHz

WDW EMSSB 0

LB 0.30 Hz

GB 0

PC 1.40

JC819PROTON.ucl CDCl3 /v/Bruker/TOPSPIN jdw 10

200 180 160 140 120 100 80 60 40 20 0 ppm

21.25

76.95

77.16

77.38

127.11

127.13

128.85

129.62

137.16

138.48

141.28 NAME Sep25-2013

EXPNO 21PROCNO 1Date_ 20130925Time 10.47INSTRUM AV600PROBHD 5 mm CPDCH 13CPULPROG zgpg30TD 78942SOLVENT CDCl3NS 128

DS 0SWH 43859.648 HzFIDRES 0.555593 Hz

AQ 0.8999888 secRG 1030DW 11.400 usecDE 20.22 usec

TE 298.0 KD1 2.00000000 secD11 0.03000000 sec

TD0 1

======== CHANNEL f1 ========NUC1 13CP1 9.80 usecPL1 5.00 dBPL1W 26.76886177 W

SFO1 150.9201628 MHz

======== CHANNEL f2 ========

CPDPRG2 waltz16NUC2 1HPCPD2 70.00 usecPL2 1.00 dB

PL12 17.23 dBPL13 20.00 dBPL2W 13.76731014 WPL12W 0.32798135 WPL13W 0.17332016 WSFO2 600.1324005 MHz

SI 65536SF 150.9027930 MHzWDW EMSSB 0LB 1.00 Hz

GB 0PC 1.40

JC819C13CPD.ucl CDCl3 /v/Bruker/TOPSPIN jdw 10

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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8

4-Methoxybiphenyl 2c

9 8 7 6 5 4 3 2 1 ppm

3.86

6.99

7.00

7.26

7.30

7.32

7.33

7.42

7.43

7.44

7.54

7.55

7.56

7.57

3.1

2

1.9

9

1.0

0

2.0

5

4.0

3NAME 25thsept2013EXPNO 10

PROCNO 1

Date_ 20130925

Time 10.28INSTRUM AV600

PROBHD 5 mm CPDCH 13C

PULPROG zg30

TD 98682SOLVENT CDCl3

NS 8

DS 0

SWH 12335.526 Hz

FIDRES 0.125003 Hz

AQ 3.9999604 sec

RG 32

DW 40.533 usec

DE 10.48 usecTE 298.0 K

D1 1.00000000 sec

TD0 1

======== CHANNEL f1 ========

NUC1 1H

P1 11.40 usec

PL1 1.00 dB

PL1W 13.76731014 WSFO1 600.1337061 MHz

SI 32768

SF 600.1300116 MHz

WDW EMSSB 0

LB 0.30 Hz

GB 0

PC 1.40

JC859PROTON.ucl CDCl3 /v/Bruker/TOPSPIN jdw 11

O

200 180 160 140 120 100 80 60 40 20 0 ppm

55.48

76.95

77.16

77.37

114.31

126.87

128.29

128.85

133.88

140.94

159.24 NAME Sep25-2013

EXPNO 11

PROCNO 1Date_ 20130925

Time 11.00INSTRUM AV600PROBHD 5 mm CPDCH 13CPULPROG zgpg30

TD 78942SOLVENT CDCl3NS 128DS 0SWH 43859.648 HzFIDRES 0.555593 HzAQ 0.8999888 secRG 1030DW 11.400 usecDE 20.22 usec

TE 298.0 KD1 2.00000000 secD11 0.03000000 secTD0 1

======== CHANNEL f1 ========NUC1 13C

P1 9.80 usecPL1 5.00 dBPL1W 26.76886177 WSFO1 150.9201628 MHz

======== CHANNEL f2 ========CPDPRG2 waltz16NUC2 1HPCPD2 70.00 usecPL2 1.00 dBPL12 17.23 dB

PL13 20.00 dBPL2W 13.76731014 WPL12W 0.32798135 WPL13W 0.17332016 WSFO2 600.1324005 MHzSI 65536

SF 150.9027930 MHzWDW EMSSB 0

LB 1.00 HzGB 0PC 1.40

O

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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9

4-Fluorobiphenyl 2d

9 8 7 6 5 4 3 2 1 ppm

7.11

7.13

7.14

7.26

7.34

7.35

7.36

7.42

7.44

7.45

7.54

7.54

7.55

7.56

2.0

1

1.0

9

2.1

7

4.0

0

NAME JC847600EXPNO 20

PROCNO 1

Date_ 20130911

Time 21.26INSTRUM AV600

PROBHD 5 mm CPDCH 13C

PULPROG zg30

TD 98682SOLVENT CDCl3

NS 8

DS 0

SWH 12335.526 Hz

FIDRES 0.125003 Hz

AQ 3.9999604 sec

RG 40.3

DW 40.533 usec

DE 10.48 usecTE 298.0 K

D1 1.00000000 sec

TD0 1

======== CHANNEL f1 ========

NUC1 1H

P1 11.40 usec

PL1 1.00 dB

PL1W 13.76731014 WSFO1 600.1337061 MHz

SI 32768

SF 600.1300116 MHz

WDW EMSSB 0

LB 0.30 Hz

GB 0

PC 1.40

JC847PROTON.ucl CDCl3 /v/Bruker/TOPSPIN jdw 48

F

200 180 160 140 120 100 80 60 40 20 0 ppm

76.93

77.14

77.35

115.66

115.80

127.14

127.38

128.78

128.83

128.94

137.43

140.36

161.75

163.38 NAME JC855600

EXPNO 11

PROCNO 1Date_ 20130918

Time 16.42INSTRUM AV600PROBHD 5 mm CPDCH 13CPULPROG zgpg30

TD 78942SOLVENT CDCl3NS 128DS 0SWH 43859.648 HzFIDRES 0.555593 HzAQ 0.8999888 secRG 1030DW 11.400 usecDE 20.22 usec

TE 298.0 KD1 2.00000000 secD11 0.03000000 secTD0 1

======== CHANNEL f1 ========NUC1 13C

P1 9.80 usecPL1 5.00 dBPL1W 26.76886177 WSFO1 150.9201628 MHz

======== CHANNEL f2 ========CPDPRG2 waltz16NUC2 1HPCPD2 70.00 usecPL2 1.00 dBPL12 17.23 dB

PL13 20.00 dBPL2W 13.76731014 WPL12W 0.32798135 WPL13W 0.17332016 WSFO2 600.1324005 MHzSI 65536

SF 150.9027930 MHzWDW EMSSB 0

LB 1.00 HzGB 0PC 1.40

F

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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10

3,5-Dimethylbiphenyl 2e

9 8 7 6 5 4 3 2 1 ppm

2.38

7.00

7.21

7.26

7.32

7.33

7.34

7.41

7.42

7.43

7.57

7.57

7.58

7.58

6.1

6

1.0

0

2.0

1

1.0

2

2.0

5

2.0

2NAME JC859pureEXPNO 40

PROCNO 1

Date_ 20130919

Time 16.09INSTRUM AV600

PROBHD 5 mm CPDCH 13C

PULPROG zg30

TD 98682SOLVENT CDCl3

NS 8

DS 0

SWH 12335.526 Hz

FIDRES 0.125003 Hz

AQ 3.9999604 sec

RG 32

DW 40.533 usec

DE 10.48 usecTE 298.0 K

D1 1.00000000 sec

TD0 1

======== CHANNEL f1 ========

NUC1 1H

P1 11.40 usec

PL1 1.00 dB

PL1W 13.76731014 WSFO1 600.1337061 MHz

SI 32768

SF 600.1300116 MHz

WDW EMSSB 0

LB 0.30 Hz

GB 0

PC 1.40

JC851PROTON.ucl CDCl3 /v/Bruker/TOPSPIN jdw 34

200 180 160 140 120 100 80 60 40 20 0 ppm

21.54

30.43

76.93

77.14

77.35

125.22

127.19

127.31

128.75

129.00

138.37

141.37

141.56 NAME JC859pure

EXPNO 41PROCNO 1Date_ 20130919Time 16.30

INSTRUM AV600PROBHD 5 mm CPDCH 13CPULPROG zgpg30TD 78942SOLVENT CDCl3NS 128DS 0SWH 43859.648 HzFIDRES 0.555593 HzAQ 0.8999888 secRG 1030

DW 11.400 usecDE 20.22 usec

TE 298.0 K

D1 2.00000000 secD11 0.03000000 secTD0 1

======== CHANNEL f1 ========NUC1 13CP1 9.80 usecPL1 5.00 dBPL1W 26.76886177 WSFO1 150.9201628 MHz

======== CHANNEL f2 ========CPDPRG2 waltz16NUC2 1H

PCPD2 70.00 usecPL2 1.00 dBPL12 17.23 dBPL13 20.00 dBPL2W 13.76731014 W

PL12W 0.32798135 W

PL13W 0.17332016 WSFO2 600.1324005 MHzSI 65536SF 150.9027930 MHzWDW EMSSB 0LB 1.00 HzGB 0PC 1.40

JC851C13CPD.ucl CDCl3 /v/Bruker/TOPSPIN jdw 34

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

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11

4-tert-butylbiphenyl 2f

9 8 7 6 5 4 3 2 1 ppm1.37

7.26

7.31

7.33

7.34

7.42

7.43

7.45

7.47

7.48

7.54

7.56

7.59

7.60

8.9

8

1.0

0

2.0

5

2.0

5

1.9

9

2.0

7NAME JC869

EXPNO 30PROCNO 1Date_ 20130920

Time 5.56INSTRUM drx500PROBHD 5 mm Multinu

PULPROG zg30

TD 65536SOLVENT CDCl3NS 16

DS 0SWH 10330.578 HzFIDRES 0.157632 Hz

AQ 3.1720407 sec

RG 362DW 48.400 usecDE 6.00 usec

TE 300.0 KD1 1.00000000 sec

============ CHANNEL f1 =============NUC1 1HP1 17.40 usec

PL1 0.00 dBSFO1 500.1330885 MHzSI 65536

SF 500.1300140 MHzWDW EMSSB 0LB 0.30 Hz

GB 0PC 1.00

JC869PROTON.ucl CDCl3 v2 jdw 45

200 180 160 140 120 100 80 60 40 20 0 ppm

31.44

34.59

76.82

77.07

77.32

125.76

126.85

127.03

127.08

128.74

138.39

141.15

150.33

NAME JC869

EXPNO 31PROCNO 1Date_ 20130920

Time 6.24INSTRUM drx500PROBHD 5 mm Multinu

PULPROG zgpg30TD 65536SOLVENT CDCl3

NS 512DS 4SWH 31446.541 Hz

FIDRES 0.479836 HzAQ 1.0420883 secRG 4096

DW 15.900 usec

DE 6.00 usecTE 300.0 KD1 2.00000000 sec

d11 0.03000000 secd12 0.00002000 sec

============ CHANNEL f1 =============NUC1 13CP1 6.40 usec

PL1 0.00 dBSFO1 125.7715719 MHz

============ CHANNEL f2 =============

CPDPRG2 waltz16

NUC2 1HPCPD2 95.00 usec

PL2 0.00 dBPL12 19.00 dBPL13 19.00 dB

SFO2 500.1320005 MHzSI 32768SF 125.7577814 MHz

WDW EMSSB 0LB 1.00 HzGB 0

PC 1.40

JC869C13CPD CDCl3 v2 jdw 45

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

Page 12: Observations on transition metal free biaryl coupling: Potassium … · 2014-01-13 · 1 Observations on transition metal free biaryl coupling: Potassium tert- butoxide alone promotes

12

4-Iodobiphenyl 2h

9 8 7 6 5 4 3 2 1 ppm

7.26

7.32

7.34

7.36

7.38

7.38

7.42

7.43

7.44

7.44

7.45

7.45

7.54

7.56

7.56

7.76

7.77

3.0

8

2.1

1

2.0

3

2.0

0NAME JC8671

EXPNO 10PROCNO 1Date_ 20130920

Time 3.45INSTRUM drx500PROBHD 5 mm Multinu

PULPROG zg30

TD 65536SOLVENT CDCl3NS 16

DS 0SWH 10330.578 HzFIDRES 0.157632 Hz

AQ 3.1720407 sec

RG 724.1DW 48.400 usecDE 6.00 usec

TE 300.0 KD1 1.00000000 sec

============ CHANNEL f1 =============NUC1 1HP1 17.40 usec

PL1 0.00 dBSFO1 500.1330885 MHzSI 65536

SF 500.1300140 MHzWDW EMSSB 0LB 0.30 Hz

GB 0PC 1.00

JC871PROTON.ucl CDCl3 v2 jdw 36

I

200 180 160 140 120 100 80 60 40 20 0 ppm

76.81

77.06

77.32

93.05

126.96

127.75

128.96

129.07

137.91

140.14

140.82

NAME JC8671

EXPNO 11PROCNO 1Date_ 20130920

Time 4.12INSTRUM drx500PROBHD 5 mm Multinu

PULPROG zgpg30TD 65536SOLVENT CDCl3

NS 512DS 4SWH 31446.541 Hz

FIDRES 0.479836 HzAQ 1.0420883 secRG 9195.2

DW 15.900 usec

DE 6.00 usecTE 300.0 KD1 2.00000000 sec

d11 0.03000000 secd12 0.00002000 sec

============ CHANNEL f1 =============NUC1 13CP1 6.40 usec

PL1 0.00 dBSFO1 125.7715719 MHz

============ CHANNEL f2 =============

CPDPRG2 waltz16

NUC2 1HPCPD2 95.00 usec

PL2 0.00 dBPL12 19.00 dBPL13 19.00 dB

SFO2 500.1320005 MHzSI 32768SF 125.7577814 MHz

WDW EMSSB 0LB 1.00 HzGB 0

PC 1.40

JC871C13CPD CDCl3 v2 jdw 36

I

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

Page 13: Observations on transition metal free biaryl coupling: Potassium … · 2014-01-13 · 1 Observations on transition metal free biaryl coupling: Potassium tert- butoxide alone promotes

13

p-Terphenyl 2g

9 8 7 6 5 4 3 2 1 ppm

7.26

7.35

7.36

7.38

7.45

7.46

7.48

7.64

7.66

7.68

2.0

0

4.1

1

4.0

7

4.0

6NAME JC8672

EXPNO 20PROCNO 1Date_ 20130920

Time 5.23INSTRUM drx500PROBHD 5 mm Multinu

PULPROG zg30

TD 65536SOLVENT CDCl3NS 16

DS 0SWH 10330.578 HzFIDRES 0.157632 Hz

AQ 3.1720407 sec

RG 724.1DW 48.400 usecDE 6.00 usec

TE 300.0 KD1 1.00000000 sec

============ CHANNEL f1 =============NUC1 1HP1 17.40 usec

PL1 0.00 dBSFO1 500.1330885 MHzSI 65536

SF 500.1300140 MHzWDW EMSSB 0LB 0.30 Hz

GB 0PC 1.00

JC8672PROTON.ucl CDCl3 v2 jdw 39

200 180 160 140 120 100 80 60 40 20 0 ppm

76.81

77.06

77.32

127.11

127.40

127.56

128.87

140.20

140.79

NAME JC8672

EXPNO 21PROCNO 1Date_ 20130920

Time 5.50INSTRUM drx500PROBHD 5 mm Multinu

PULPROG zgpg30TD 65536SOLVENT CDCl3

NS 512DS 4SWH 31446.541 Hz

FIDRES 0.479836 HzAQ 1.0420883 secRG 8192

DW 15.900 usec

DE 6.00 usecTE 300.0 KD1 2.00000000 sec

d11 0.03000000 secd12 0.00002000 sec

============ CHANNEL f1 =============NUC1 13CP1 6.40 usec

PL1 0.00 dBSFO1 125.7715719 MHz

============ CHANNEL f2 =============

CPDPRG2 waltz16

NUC2 1HPCPD2 95.00 usec

PL2 0.00 dBPL12 19.00 dBPL13 19.00 dB

SFO2 500.1320005 MHzSI 32768SF 125.7577814 MHz

WDW EMSSB 0LB 1.00 HzGB 0

PC 1.40

JC8672C13CPD CDCl3 v2 jdw 39

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014

Page 14: Observations on transition metal free biaryl coupling: Potassium … · 2014-01-13 · 1 Observations on transition metal free biaryl coupling: Potassium tert- butoxide alone promotes

14

3-Phenylpyridine 2i

9 8 7 6 5 4 3 2 1 ppm

7.26

7.37

7.38

7.38

7.39

7.40

7.40

7.40

7.41

7.41

7.42

7.43

7.47

7.49

7.50

7.58

7.59

7.88

7.88

7.88

7.89

7.89

7.90

8.61

8.87

2.0

0

2.0

1

2.0

1

1.0

0

0.9

9

0.9

5

NAME Oct09-2013EXPNO 20

PROCNO 1

Date_ 20131009

Time 10.32INSTRUM AV600

PROBHD 5 mm CPDCH 13C

PULPROG zg30

TD 98682SOLVENT CDCl3

NS 8

DS 0

SWH 12335.526 Hz

FIDRES 0.125003 Hz

AQ 3.9999604 sec

RG 40.3

DW 40.533 usec

DE 10.48 usecTE 298.0 K

D1 1.00000000 sec

TD0 1

======== CHANNEL f1 ========

NUC1 1H

P1 11.40 usec

PL1 1.00 dB

PL1W 13.76731014 WSFO1 600.1337061 MHz

SI 32768

SF 600.1300116 MHz

WDW EMSSB 0

LB 0.30 Hz

GB 0

PC 1.40

JC903woPROTON.ucl CDCl3 /v/Bruker/TOPSPIN jdw 11

N

200 180 160 140 120 100 80 60 40 20 0 ppm

76.93

77.14

77.35

123.77

127.29

128.25

129.22

134.57

136.86

137.92

148.36

148.49 NAME Oct09-2013

EXPNO 21

PROCNO 1Date_ 20131009

Time 10.45INSTRUM AV600PROBHD 5 mm CPDCH 13CPULPROG zgpg30

TD 78942SOLVENT CDCl3NS 128DS 0SWH 43859.648 HzFIDRES 0.555593 HzAQ 0.8999888 secRG 1030DW 11.400 usecDE 20.22 usec

TE 298.0 KD1 2.00000000 secD11 0.03000000 secTD0 1

======== CHANNEL f1 ========NUC1 13C

P1 9.80 usecPL1 5.00 dBPL1W 26.76886177 WSFO1 150.9201628 MHz

======== CHANNEL f2 ========CPDPRG2 waltz16NUC2 1HPCPD2 70.00 usecPL2 1.00 dBPL12 17.23 dB

PL13 20.00 dBPL2W 13.76731014 WPL12W 0.32798135 WPL13W 0.17332016 WSFO2 600.1324005 MHzSI 65536

SF 150.9027930 MHzWDW EMSSB 0

LB 1.00 HzGB 0PC 1.40

N

Electronic Supplementary Material (ESI) for Chemical CommunicationsThis journal is © The Royal Society of Chemistry 2014


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