Puranik, Ramachandra; Rao, Y. Jayaprakash; Krupadanam, G. L. David, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2002, vol. 41, # 4, p. 868 - 870
NHC-catalyzed enantioselective C2-functionalization of 3-hydroxychromenones <i>via</i> α,β-unsaturated acyl azoliums
作者:Krzysztof Dzieszkowski、Michał Słotwiński、Katarzyna Rafińska、Tadeusz M. Muzioł、Zbigniew Rafiński
DOI:10.1039/d1cc03708k
日期:——
A novel synthetic method for enantioselective C2-functionalization of 3-hydroxychromenones promoted by N-heterocyclic carbenes via the formation of α,β-unsaturatedacylazolium intermediates, which occurs with Coates–Claisen rearrangement is established. This synthetic strategy enabled the rapid assembly of enantiomerically enriched δ-hydroxychromenone-derived esters/amides under mild conditions with