Are you ready for some science?
Alkyl Halides
-----Kiany Louis Jimmy
Today’s Objectives
A
fter today's class, you will be
able 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
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?
http://v.youku.com/v_show/id_XNTIxMzkzMDcy.html
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).
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 Equally
Distant from Ends of Chain
• Begin at the end nearer the substituent whose name
comes first in the alphabet.
THE HARDEST 截图
Easy.
CH2F
Hard?
Normal!
- CHCI2 -CHI2
Absolutely
Can we doNO!!!!
this?
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.
F
H
CI
C
C
H CI
H
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
• 4
CH2
H2C
I2C
CH-CI
CH-F
Ans: 1-chloro-2-flouro-3,3diindocyclopentane
Properties of Alkyl Halides
• 1. Will Alkyl Halides dissolve in water?
• 2. Whether Alkyl Halides are polar-compound or
nonpolar-compound?