N-Heterocyclic carbene-catalyzed aldol-lactonization of ketoacids via dynamic kinetic resolution

TitleN-Heterocyclic carbene-catalyzed aldol-lactonization of ketoacids via dynamic kinetic resolution
Publication TypeJournal Article
Year of Publication2017
AuthorsMondal, S, Mukherjee, S, Das, TKanti, Gonnade, R, Biju, AT
JournalACS Catalysis
Volume7
Issue6
Pagination3995-3999
Date PublishedJUN
Type of ArticleArticle
ISSN2155-5435
Keywordsaldol lactonization, beta-lactones, DKR strategies, ketoacids, N-heterocyclic carbenes, organocatalysis
Abstract

N-Heteroryclic carbene (NHC)-catalyzed enantioselective aldol lactonization of acyclic ketoacids, proceeding via dynamic kinetic resolution, is presented. The carbene generated from the chiral anninoinclanol-derived triazolium salt in the presence of LiCl was the key for the success of this transformation. The reaction allowed the diastereoselective and enantioselective synthesis of cyclopentane-fused beta-lactones having three contiguous stereocenters. The reaction products are shown to undergo substrate-controlled beta-lactone opening in the presence of amines to afford succinimide derivatives with four contiguous stereocenters.

DOI10.1021/acscatal.7b00681
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)11.384
Divison category: 
Organic Chemistry

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