Kundu A, Pramanik A. Synthesis of multi-functionalized benzofurans through the condensation of ninhydrin and phenols using SSA as a recyclable heterogeneous acid catalyst.
Mol Divers 2016;
20:619-26. [PMID:
26829938 DOI:
10.1007/s11030-016-9661-3]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 01/18/2016] [Indexed: 11/30/2022]
Abstract
A simple and efficient one-pot methodology has been developed for the synthesis of biologically important multi-functionalized 3-(2[Formula: see text]-hydroxyaryl)-2-(2[Formula: see text]-carboxyphenyl)benzofurans using silica sulfuric acid (SSA) as a heterogeneous acid catalyst in DMF medium. The significant advantages of this methodology are the use of SSA as a recyclable solid acid catalyst, operational simplicity, easy availability of the starting materials, and good yield of the products with high atom-economy.
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