Asymmetric hydrogenation, hydroformylation and hydrocarbalkoxylation of olefins by transition metal complexes with steroidal phosphines
作者:S. Gladiali、G. Faedda、M. Marchetti、C. Botteghi
DOI:10.1016/s0022-328x(00)98621-2
日期:1983.3
Two new optically active phosphines, 3α-diphenylphosphino-5α-cholestane [(+)-DICOL] and 2,3-O-(5′α-cholestan-3′,3′-ylidene)-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane [(−)-DIOCOL] have been prepared and used as ligands in transitionmetal catalyzed asymmetric processes. In CO-insertion reactions, especially in the Pd promoted hydrocarbalkoxylation,(+)-DICOL-based complexes displayed a remarkable