Chen Z, Nie XD, Sun JT, Yang AM, Wei BG. Zn(OTf)
2-catalyzed hydroamination of ynamides with aromatic amines.
Org Biomol Chem 2021;
19:2492-2501. [PMID:
33656504 DOI:
10.1039/d0ob02603d]
[Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The Zn(OTf)2-catalyzed hydroamination of ynamides 2a-2l with aromatic amines 1a-1r was developed. This protocol features broad substrate scope of aromatic amines, good functional group tolerance for ynamides, and excellent regioselectivities. As a result, a variety of substituted amidine compounds 3aa-3oa, 3ab-3al and 3pa-3rk were prepared in moderate to excellent yields and with high regioselectivities.
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