From: Anna P (anna2532001$##$yahoo.com)
Date: Fri Sep 05 2003 - 20:49:52 EDT
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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