Patent ID: 7531698
Filing Date: 2009-05-12
Classification: C07C,C07F,Y10S

Abstract:
1. A phosphorous ligand having the following formula: wherein i, j, k, l, m and n are, independently, H, R, Ar, substituted Ar, OR, OAr, COOEt, halide, SO 2 R, SO 3 H, SO 2 NHR, POR 2 , POAr 2 or NR 2 , where R is an alkyl, substituted alkyl, aryl or substituted aryl and Ar is an aryl; X 1 -X 4 are, independently, O, or CH 2 ; and Y 1 , Y′ 1 , Y 2 , Y′ 2 , Y 3 , Y′ 3 , Y 4 , Y′ 4 , are, independently, R, Ar, OR, OAr, pyrrole or substituted pyrrole, or where R, Ar, OR, OAr, pyrrole and substituted pyrrole are linked with a carbon to carbon bond, CH 2 , NH, NR or O.