Min C, Sanchawala A, Seidel D. Dual C-H functionalization of N-aryl amines: synthesis of polycyclic amines via an oxidative Povarov approach.
Org Lett 2014;
16:2756-9. [PMID:
24786302 PMCID:
PMC4033637 DOI:
10.1021/ol501073f]
[Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Indexed: 12/25/2022]
Abstract
Iminium ions generated in situ via copper(I) bromide catalyzed oxidation of N-aryl amines readily undergo [4 + 2] cycloadditions with a range of dienophiles. This method involves the functionalization of both a C(sp(3))-H and a C(sp(2))-H bond and enables the rapid construction of polycyclic amines under relatively mild conditions.
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