Re: ORGLIST:synthesis using triphenylphoshine

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From: Krzysztof Felczak (felczak$##$mail.msu.edu)
Date: Mon Sep 08 2003 - 09:57:00 EDT

You can try triphenylphosphine on polymer support (Aldrich). In this case
purification is simplified.

Good Luck!

Krzysztof Felczak

>On Friday, September 5, 2003, at 05:49 PM, Anna P wrote:
>
>>Dear Colleagues,
>>I am trying to prepare Methyl 3,5-Divinylbenzoate from Methyl
>>3,5-Bis(bromomethyl)benzoate by reaction with triphenylphosphine in
>>methylene chloride.
>>( as per Macromolecules, Vol24, No.5, 1991).
>>Unfortunately, every time I synthesize the compound nmr data & TLC shows
>>that my compound is impure. It looks like phosphine oxide or other side
>>reaxn is going on. Has anyone worked with triphenylphosphine compounds
>>before and faced these problems? Please advice.
>>thanks for your time,
>>Dr. Anna Prakash
>>Arizona State University
>>Tempe, AZ, USA

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