Direct Catalytic Asymmetric α-Allylic Alkylation of Aza-aryl Methylamines by Chiral-Aldehyde-Involved Ternary Catalysis System
Fang Zhu, Qi-Wen Shen, Wenzhe Wang, Zhu‐Lian Wu, Tian Cai, Wei Wen, Qi‐Xiang Guo
Abstract
A ternary catalytic system comprising a chiral aldehyde, a transition metal, and a Lewis acid is rationally designed for the asymmetric α-allylic alkylation reaction of aza-aryl methylamines and π-allylmetal electrophiles. Structural diversity chiral amines bearing carbon-carbon double bonds and aza-heterocycles are produced in moderate to good yields with good to excellent enantioselectivities. These products can be readily converted into other chiral amines without the loss of enantioselectivity. A reasonable reaction mechanism is proposed to illustrate the stereoselective control results.
Topics & Concepts
ChemistryElectrophileAldehydeArylTsuji–Trost reactionCatalysisMethylaminesAllylic rearrangementAlkylationEnantioselective synthesisCombinatorial chemistryOrganic chemistryLewis acids and basesAlkylAsymmetric Hydrogenation and CatalysisAsymmetric Synthesis and CatalysisChemical Synthesis and Analysis