申请人:Phull Manjinder Singh
公开号:US20110054218A1
公开(公告)日:2011-03-03
A process for preparing a compound of formula (V) or its enantiomer, which comprises:
(a) reacting racemic aminoindan of formula (II) or its enantiomer with allylhalide in presence of a base and an organic solvent at a temperature ranging from 25 C to the reflux temperature of the solvent to give compound of formula (III);
Where R is
H or
(b) reacting the compound (III) with halogenating agent in a suitable organic solvent to give a dihalo compound of formula (IV).
(c) treating the dihalo compound (IV) with a suitable base to give compound (V).