ASYMMETRIC-SYNTHESIS OF ALPHA-SUBSTITUTED BENZYL ALCOHOLS VIA THE STEREOSELECTIVE ADDITION OF NUCLEOPHILES TO HOMOCHIRAL TRICARBONYL(ETA-6-O-TRIALKYLSILYLBENZALDEHYDE)CHROMIUM(O) COMPLEXES - Davies, S; Goodfellow, C (JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1, 1990)