Xiong M, Xie X, Liu Y. Copper-Catalyzed Borylative Cyclization of in Situ Generated o-Allenylaryl Nitriles with Bis(pinacolato)diboron.
Org Lett 2017;
19:3398-3401. [PMID:
28653539 DOI:
10.1021/acs.orglett.7b01355]
[Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A Cu-catalyzed cascade borylcupration/cyclization of in situ generated allene-nitriles with B2pin2 has been developed, which provides highly substituted 3-boryl-1-naphthylamines with excellent regioselectivity and wide functional group compatibility. It has been shown that, for the first time, the catalytically generated allylcopper species can be captured by a cyano group from a normal nitrile to furnish a carbocycle.
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