N-Heterocyclic carbene-catalyzed formal [3+3] annulation of alkynoic acid esters with indolin-3-ones: access to functionalized pyrano[3,2-b]indol-2-ones

Sun, KW; Jin, SY; Fang, SS; Ma, R; Zhang, XM; Gao, MY; Zhang, WQ; Lu, T; Du, D

Du, D (reprint author), China Pharmaceut Univ, Dept Organ Chem, State Key Lab Nat Med, Nanjing 210009, Jiangsu, Peoples R China.

ORGANIC CHEMISTRY FRONTIERS, 2019; 6 (13): 2291

Abstract

An N-heterocyclic carbene-catalyzed formal [3 + 3] annulation of alkynoic acid esters with indolin-3-ones has been developed for the rapid and efficie......

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