Asymmetric Synthesis of Allenyl α-Amino Amides by an Isothiourea Catalyzed Enantioselective [2,3]-Sigmatropic Rearrangement

Organic Letters
Ling ZhangJin Song

Abstract

Highly efficient catalytic asymmetric [2,3]-sigmatropic rearrangements of propargyl ammonium salts have been accomplished under mild reaction conditions. In the presence of the chiral isothiourea catalyst, a wide range of allenyl α-amino amide derivatives were obtained in generally good yields (up to 99%) with excellent enantioselectivities (up to 96% ee).

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Citations

Oct 28, 2019·Chemistry, an Asian Journal·Si-Cong LiuDonghui Wei

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