NOVEL QUINUCLIDINE DERIVATIVE USEFUL IN THE PREPARATION OF MEQUITAZINE
申请人:Mioskowski Charles
公开号:US20100105897A1
公开(公告)日:2010-04-29
The invention relates to a 1-aza-bicyclo[2.2.2]oct-2-en-3-ylmethyl acetate of the formula (I), wherein said compound is useful as a synthesis intermediate for the production of mequitazine.
A short and straightforward synthesis of the antihistaminic drug mequitazine is reported, based on an efficient palladium catalyzed allylic alkylation of 1-aza-bicyclo[2.2.2]oct-2-en-3-ylmethyl acetate using sodium phenothiazinate in mild conditions.