Patent ID: 6211107
Filing Date: 2001-04-03
Classification: C07C,C07D,C07F

Abstract:
A compound of formula (III): ##STR17##in which M is a transition metal ion;A is a counter-ion if required;B, B', E and E' are independently selected from the group consisting of hydrogen aryl, C.sub.1-5 alkyl, silyl or aryl-C.sub.1-6 alkyl in which any aryl or alkyl moiety is optionally substituted or B' and B or E' and E together form a C.sub.2-6 polymethylene link; with the proviso that only one of the carbons marked with an asterisk is a chiral center; R.sub.1, R.sub.2 R.sub.3, R.sub.4 R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 are independently hydrogen, alkyl or alkoxy.