• Are you ready for some science?

Alkyl Halides

-----Kiany Louis Jimmy

Today’s ObjectivesAfter today's class, you will be a

ble to know:•What is the Alkyl Halides!!!!!•How to name the Alkyl Halides (super easy!!!)•Some other properties of Alkyl Halides!!!!!

Chlorofluorocarbons(CFCs)An organic compound that contains carbon, chlorine, and fluorine

Physical properties:- colorless- relatively odorless- low toxicity - can be dissolved in water

Brainstorm

What kinds of things do

people use CFCs to do in

our daily life?

Explain it in a simple way

An organic compound containing at least one carbonhalogen

• bond (C-X)• X (F, Cl, Br, I) replaces H

Can contain many C-X bonds

Properties and some uses• Fire-resistant solvents• Refrigerants

How to name it?

• Name it in the same manner used for alkyl groups.

• F-fluoro Cl-chloro B-bromo(the general term for an attached halogen atom is a "halo" group).

http://v.youku.com/v_show/id_XNTIxMzkzMDcy.html

Let me tell you how to do this

• examples: Candy time! • Are you ready?

Are you sure?

Ready? Set? Go!!

CH3-Cl = chloromethane

Naming Alkyl Halides

• Name is based on longest carbon chain• (Contains double or triple bond if present)• Number from end nearest any substituent (alkyl or halogen)

Naming with Multiple Halides

• if more than one of the same kind of halogen is present, use the prefixes di,tri, etc.

• if a compound contains both alkyl and halo groups, list the attached groups in alphabetical order. Start numbering the end which gives the lowest set of number.

Naming if Two Halides or Alkyl Are EquallyDistant from Ends of Chain

• Begin at the end nearer the substituent whose name comes first in the alphabet.

CH2F - CHCI2 -CHI2

Easy. Normal! Hard?

THE HARDEST 截图

Can we do this?Absolutely NO!!!!The reason why we can't do this is because there is no place for another carbon to attach to the carbon that has already existed.

let's me show you a diagram.

C C

H

H

HF

CI

CI

No space for another C

Question Time !

Naming

1.CH3-CHBr-CHF-CH2-CH3

Ans:2-bromo-3fluoropentane

2.CHI2-CH2-CH2-CH2-CHF-CBr2-CH2I

Ans: 2-dibrome-3-fluoro-1,6,6-triindohexane

3.CH3-CHCH2CH3-CH2-CH2-CHCl-CH2-CHI2

Ans:3-chloro-1,1-diindo-6-ethylheptane

Ans: 1-chloro-2-flouro-3,3-diindocyclopentane

• 4

H2C

CH2

CH-CI

I2C CH-F

Properties of Alkyl Halides

• 1. Will Alkyl Halides dissolve in water?• 2. Whether Alkyl Halides are polar-compound or

nonpolar-compound?