Wan Q, Xin L, Zhang J, Huang X. Efficient access to 1,3,4-trisubstituted pyrroles
via gold-catalysed cycloisomerization of 1,5-diynes.
Org Biomol Chem 2022;
20:1647-1651. [PMID:
35137761 DOI:
10.1039/d1ob02393d]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A gold-catalysed cycloisomerization of 1,5-diynes is described, which offers a selective approach to access 1,3,4-trisubstituted pyrroles. In this reaction, the cationic gold catalyst activates the ynamide moiety, initiating the cycloisomerization to produce the pyrrole core, and H2O acts as an external nucleophile to trap the vinyl cationic species, thus leading to the formation of 1,3,4-trisubstituted pyrroles with high selectivity.
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