Chiral amine–imine ligands based on trans-2,5-disubstituted pyrrolidines and their application in the palladium-catalyzed allylic alkylation
作者:Hongfeng Chen、James A. Sweet、Kin-Chung Lam、Arnold L. Rheingold、Dominic V. McGrath
DOI:10.1016/j.tetasy.2009.07.010
日期:2009.7
moiety affords dramatic changes on the outcome of the stereochemistry. Evidencefrom various studies suggested that during the palladium-catalyzed allylic alkylation reaction, nucleophilicattack onto the 1,3-diphenylallyl moiety in the transition state occurs mainly trans to the pyridine ring of the less stable conformation of the palladiumcomplexes.