Regioselective Rh-Catalyzed Hydroformylation of 1,1,3-Trisubstituted Allenes Using BisDiazaPhos Ligand
作者:Josephine Eshon、Clark R. Landis、Jennifer M. Schomaker
DOI:10.1021/acs.joc.7b01140
日期:2017.9.15
The efficient hydroformylation of 1,1,3-trisubstituted allenes is accomplished with low loadings of a Rh catalyst supported by a BisDiazaPhos (BDP) ligand. The ligand identity is key to achieving high regioselectivity, while the mild reaction conditions minimize competing isomerization and hydrogenation to produce β,γ-unsaturated aldehydes and their derivatives in excellent yields.
1,2,1,3-三取代烯的有效加氢甲酰基化反应是由低负载的BisDiazaPhos(BDP)配体负载的Rh催化剂完成的。配体的同一性是实现高区域选择性的关键,而温和的反应条件可最大程度地减少竞争性异构化和氢化反应,从而以极佳的收率生产β,γ-不饱和醛及其衍生物。