Development of Diamidophosphite Ligands and Their Application to the Palladium-Catalyzed Vinyl-Substituted Trimethylenemethane Asymmetric [3 + 2] Cycloaddition
作者:Barry M. Trost、Tom M. Lam
DOI:10.1021/ja305717r
日期:2012.7.18
A palladium-catalyzed asymmetric [3 + 2] cycloaddition of a vinyl-substituted trimethylenemethane (TMM) donor with α,β-unsaturated acyl imidazoles is described. A newly designed bisdiamidophosphite ligand derived from (S,S)-trans-1,2-cyclohexanediamine and (2R,4R)-pentanediol has been instrumental for the development of this process. This transformation generates tetrasubstituted cyclopentanes bearing