The development and mechanism of the highly chemo- and enantioselective organocatalytic hydrophosphination reaction of α,β-unsaturatedaldehydes is presented. The reactions are catalyzed by protected chiral diarylprolinol derivatives and give access to optically active phosphine derivatives in high yields with up to 99% ee. The organocatalytic addition of other phosphorus nucleophiles was also investigated
Palladium-Catalyzed 1,4-Addition of Diarylphosphines to α,β-Unsaturated Aldehydes
作者:Yun-Rong Chen、Wei-Liang Duan
DOI:10.1021/ol2024339
日期:2011.11.4
A highly stereoselective asymmetric 1,4-addition of diarylphosphines to α,β-unsaturated aldehydes catalyzed by a bis(phosphine) pincer–Pd complex has been developed for the synthesis of chiral phosphines with excellent stereoselectivity (up to 98% ee) under mild conditions. The application of the current method to the synthesis of enantiopure bisphosphine and its pincer–Pd complex has also been demonstrated