Asymmetric hydroformylation of conjugated dienes catalyzed by chiral phosphine-phosphite-Rh(I) complex
作者:Toshihide Horiuchi、Tetsuo Ohta、Eiji Shirakawa、Kyoko Nozaki、Hidemasa Takaya
DOI:10.1016/s0040-4020(97)00471-7
日期:1997.6
Asymmetric hydroformylation of conjugated dienes has been investigated using (R,S)-BINAPHOS-Rh(I) complex as a catalyst [(R,S)-BINAPHOS = (R)-2-(diphenylphosphino)-1,1′-binaphthalen-2′-yl(S)-1,1′-binaphthalene-2,2′-diyl phosphite]. Optically active β,γ-unsaturated aldehydes were obtained in high regio- (78–94%) and enantioselectivities (80–97% ee) from 1-vinylcyclohexene, 4-methyl-1,3-pentadiene, and
使用(R,S)-BINAPHOS-Rh(I)配合物作为催化剂[(R,S)-BINAPHOS =(R)-2-(二苯基膦基)-1,1'-双萘酚,已研究了共轭二烯的不对称加氢甲酰化反应-2′-基(S)-1,1′-联萘-2,2′-亚磷酸二酯]。从1-乙烯基环己烯,4-甲基-1,3-戊二烯和(E)-1以高区域选择性(78-94%)和对映选择性(80-97%ee)获得旋光性β,γ-不饱和醛。-苯基-1,3-丁二烯。另一方面,1,3-丁二烯的加氢甲酰化可得到高达95%的选择性的非手性产物(E)-和(Z)-3-戊烯醛。(R)-(E)-2-甲基-3-戊烯醛是由(E)-和(Z)-1,3-戊二烯形成的主要产物,但反应的对映选择性低。还讨论了机械方面。