D. V. H, Annadate RA, Pansare SV. Synthesis and Evaluation of
N-Diaminophosphoryl Aminothioureas as Bifunctional Catalysts for Vinylogous Aldol Reactions of Isatins and 2(3
H)-Furanones.
ACS OMEGA 2023;
8:3190-3197. [PMID:
36713689 PMCID:
PMC9878653 DOI:
10.1021/acsomega.2c06637]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/23/2022] [Indexed: 06/18/2023]
Abstract
The organocatalytic asymmetric direct vinylogous aldol reaction of N-methylisatins 1 and γ-butenolides 2 to provide 3-hydroxy-2-oxindole derivatives 3 was investigated. A series of N-diaminophosphoryl aminothiourea catalysts 4 was synthesized, and their utility for the stereoselective formation of 3 was examined.
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