Synthesis 2022; 54(10): 2350-2360
DOI: 10.1055/a-1730-2540
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Copper-Catalyzed Allylation of Amines with Cyclopropyldiphenylsulfonium Trifluoromethanesulfonate

Authors


We thank Wuhan University of Technology and the ‘Hundred Talent’ Program of Hubei Province (China) for financial support.


Graphical Abstract

Abstract

Cyclopropyldiphenylsulfonium salt, a famous ylide precursor previously extensively employed in the preparation of cyclic compounds, has been successfully utilized as an efficient allylation reagent in this work. The copper-catalyzed reactions of cyclopropyldiphenylsulfonium trifluoromethanesulfonate with amines in the presence of an appropriate ligand provided the N-allylated products in good yields. Aliphatic/aromatic amines and primary/secondary amines were all converted under mild reaction conditions. This protocol was also applicable to N-functionalization of drug molecules, supplying the corresponding N-allylated compounds in satisfactory yields. The reaction, which showed good functional group tolerance with a wide range of substrates and excellent chemoselectivity, offers an interesting method for the synthesis of N-allyl amines.

Supporting Information



Publication History

Received: 05 December 2021

Accepted after revision: 03 January 2022

Accepted Manuscript online:
03 January 2022

Article published online:
24 February 2022

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