Patent ID: 6239287
Filing Date: 2001-05-29
Classification: C07D,C07F

Abstract:
A process for the preparation of the phosphonium compound of formula (I), wherein each of R.sub.1, R.sub.2 and R.sub.3 independently represent a C.sub.1-12 alkyl or phenyl alkyl group, ##STR4##which comprises reacting N-phenylpyrrolidinone (II), ##STR5##with pyridinium bromide perbromide, in the presence of a tertiary organic base and a suitable lewis acid and then treating the resultant bromo derivative (III),) with the phosphine (IV, R.sub.1 R.sub.2 R.sub.3 P) wherein R.sub.1, R.sub.2 and R.sub.3 have the meanings defined above.