Oxidative NHC catalysis for the generation of imidoyl azoliums: synthesis of benzoxazoles

Title Oxidative NHC catalysis for the generation of imidoyl azoliums: synthesis of benzoxazoles
Publication TypeJournal Article
Year of Publication2018
AuthorsPatra, A, James, A, Das, TKanti, Biju, AT
JournalJournal of Organic Chemistry
Volume83
Issue3
Pagination14820-14826
Date Published DEC
Type of ArticleArticle
ISSN0022-3263
Abstract

N-Fleterocyclic carbene (NHC)-catalyzed intramolecular cyclization of aldimines generated from 2-amino phenols and aromatic aldehydes leading to the synthesis of 2-arylbenzoxazoles under mild conditions is presented. The reaction proceeds via the generation of the aza-Breslow intermediates from imines and NHC, which under oxidative conditions form the key imidoyl azoliums and a subsequent intramolecular cyclization furnishes the product. The reaction tolerates a broad range of functional groups, and the products are formed in generally good yields.

DOI10.1021/acs.joc.8b02598
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)4.805
Divison category: 
Organic Chemistry

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