Re: double bonds
schelvac@plu.edu
Fri, 14 Mar 1997 11:24:05 -0800 (PST)
When you have a double or tripple bond, you assign priorties by pretending
that the groups containing the multiple bonds are duplicated,
triplicated,
etc. An example would be that -CH=CH2 has a higher priority than -CH(CH3)2
This is because -CH=CH2 is treated like it is H H
| |
-C-C-H
| |
(C)(C)
which has a higher priority than H H
| |
-C--C-H
| |
| H
H-C-H
|
H
Therefore, the double and tripple bonds generally receive higher
priority.
I hope this helps a little bit. This example and others
are explained in more detail on page 191 in chapter 5.
--Alethea
On Fri, 14 Mar 1997 velezsa@plu.edu wrote:
> could someone explain the effect of double and tripple bonds on
> deterniming the priority of R-S notation.
>
>