Chiral N-heterocyclic carbene catalyzed annulation of α,β-unsaturated aldehydes with 1,3-dicarbonyls

Autor: Ning-Fei Jiang, Xingliang Zheng, Zhi-Qiang Zhu, Ji-Chang Xiao, Xiaolong Wan
Rok vydání: 2011
Předmět:
Zdroj: Chemical communications (Cambridge, England). 47(30)
ISSN: 1364-548X
Popis: Chiral N-heterocyclic carbene catalyzed annulations of ynals and enals with 1,3-dicarbonyls have been described. The two reactions provided direct and efficient methods for enantioselective synthesis of functionalized dihydropyranones. Comparatively, the reactions starting from ynals were atom-economical; furthermore the reactions of enals demonstrated broader substrate compatibility.
Databáze: OpenAIRE