He J, Ouyang G, Yuan Z, Tong R, Shi J, Ouyang L. A facile synthesis of functionalized dispirooxindole derivatives via a three-component 1,3-dipolar cycloaddition reaction.
Molecules 2013;
18:5142-54. [PMID:
23644979 PMCID:
PMC6270352 DOI:
10.3390/molecules18055142]
[Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 04/26/2013] [Accepted: 04/27/2013] [Indexed: 02/05/2023] Open
Abstract
An efficient synthesis of novel dispirooxindoles has been achieved through three-component 1,3-dipolar cycloaddition of azomethine ylides generated in situ by the decarboxylative condensation of isatin and an α-amino acid with the dipolarophile 5-benzylideneimidazolidine-2,4-dione. The improved procedure features mild reaction conditions, high yields, high diastereoselectivities, a one-pot procedure and operational simplicity.
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