Asymmetric Linear-Selective Hydroformylation of 1,1-Dialkyl Olefins Assisted by a Steric-Auxiliary Strategy
作者:Dequan Zhang、Cai You、Xiuxiu Li、Jialin Wen、Xumu Zhang
DOI:10.1021/acs.orglett.0c01550
日期:2020.6.5
Asymmetric hydroformylation of 1,2-dialkyl olefins was reported. In order to increase the enantiomeric induction, steric auxiliary sulfonyl groups were introduced. Using a Rh/Yanphos complex as catalyst, chiral aldehydes were obtained with high enantioselectivities under mild pressure. The easily removable auxiliary made this method a powerful tool in the preparation of important enantiopure building
据报道1,2-二烷基烯烃的不对称加氢甲酰化。为了增加对映异构体的诱导,引入了空间辅助磺酰基。使用Rh / Yanphos络合物作为催化剂,在适度的压力下获得具有高对映选择性的手性醛。易于去除的助剂使该方法成为制备重要对映纯构件的强大工具。