PROCESS FOR THE PREPARATION OF DONEPEZIL HYDROCHLORIDE

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专利权人:

发明人:

RAO DHARMARAJ RAMACHANDRA

申请号：

IN2025/MUMNP/2010

公开号：

IN273476B

申请日:

2010.09.24

申请国别(地区):

IN

年份:

2016

代理人:

摘要：

The present invention provides a process for preparing donepezii or a salt thereof the process comprising reducing a l-benzyl-4-[(5,6-diemexy-l-indanon-2-yl)methyiene]pyridonium halide of formula (II), wherein X is bromide or chloride, in the presence of an ionic compound, a solvent, a catalyst and a source of hydrogeo, to form donepezii and optionally converting the

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