Wang J, Huang D, Wang KH, Peng X, Su Y, Hu Y, Fu Y. Tin powder-promoted one-pot synthesis of 3-spiro-fused or 3,3′-disubstituted 2-oxindoles.
Org Biomol Chem 2016;
14:9533-9542. [DOI:
10.1039/c6ob01487a]
[Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A convenient and efficient method for the constructions of 3-spirooxindole derivatives or 3,3′-disubstituted oxindoles has been developed from one-pot reactions of isatins, hydrazides or aromatic amines, 2-(bromomethyl)acrylic ester in the presence of a catalytic amount of Brønsted or Lewis acid promoted by tin powder instead of toxic stannanes.
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