METHOD OF PREPARING O-DESMETHYLVENLAFAXINE
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United States of America Patent
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Issued Date -
Apr 28, 2011
app pub date -
Oct 25, 2010
filing date -
Oct 26, 2009
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Abandoned
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Abstract
A method of preparing O-desmethylvenlafaxine from Venlafaxine or its pharmaceutically acceptable salt is disclosed. The disclosed method involves the use of mercapto carboxylic acids in the presence of suitable solvents under alkaline conditions. The disclosed process provides a novel and industrially feasible process for the preparation of O-desmethylvenlafaxine. The disclosed process also provides a cost effective, non-hazardous and efficient process for preparing O-desmethylvenlafaxine.
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