Diastereoselective and enantioselective hydrogenation of the racemic beta-keto ester 5 to give the enantiomerically pure (96% ee) ester 8 is reported. The conversion of the derived vinylstannane 11 to the antibiotic marine alkaloid (-)-haliclonadiamine (1) is describedl.
Diastereoselective and enantioselective hydrogenation of the racemic beta-keto ester 5 to give the enantiomerically pure (96% ee) ester 8 is reported. The conversion of the derived vinylstannane 11 to the antibiotic marine alkaloid (-)-haliclonadiamine (1) is describedl.