Gao Q, Liu ZS, Hua Y, Li L, Cheng HG, Cong H, Zhou Q. A palladium/norbornene cooperative catalysis to access N-containing bridged scaffolds.
Chem Commun (Camb) 2019;
55:8816-8819. [PMID:
31120461 DOI:
10.1039/c9cc03126j]
[Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A palladium/norbornene cooperative catalysis promoted annulation involving an ortho-C-H amination and intramolecular Heck cascade between aryl iodides and functionalized amination reagents is reported, thereby providing a highly convergent access to the unique N-containing bridged scaffolds: hexahydro-2,6-methano-1-benzazocine. The salient features of the reaction include its broad substrate scope (with respect to aryl iodides), its high step economy, and good chemoselectivity. Preliminary studies underscore the future promise of rendering this Catellani-type annulation enantioselective.
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