Enantioselective Addition of Diethylzinc to Aldehydes Catalyzed by <i>N</i>-(9-Phenylfluoren-9-yl) β-Amino Alcohols
作者:M. Rita Paleo、Isabel Cabeza、F. Javier Sardina
DOI:10.1021/jo9917083
日期:2000.4.1
A set of secondary N-phenylfluorenyl beta-amino alcohols have been prepared and evaluated as catalysts for the enantioselectiveaddition of diethylzinc to benzaldehyde. The influence of the substituents on the stereogenic centers of the ligand has been studied, and enantioselectivities up to 97% have been obtained. Those ligands with bulky groups in the carbinol stereocenter and small groups alpha