Asymmetric hydroformylation catalyzed by an Rh(I)-(R, S)-BINAPHOS complex: substituent effects in olefins on the regioselectivity
作者:Kyoko Nozaki、Tetsuo Nanno、Hidemasa Takaya
DOI:10.1016/s0022-328x(96)06620-x
日期:1997.1
Olefins bearing the larger substituents at the allylic position were hydroformylated in the higher iso/normal selectivity when Rh(I)-(R,S)-BINAPHOS was used as a catalyst. Deuterioformylation of 4,4,4-triphenyl-1-butene suggests that the higher iso/normal ratio may be attributed to the accelerated CO insertion to the iso-alkylrhodium 7i.
FLEMING I.; FLOYD C. D., J. CHEM. SOC. PERKIN TRANS., PART 1, 1981, NO 3, 969-976