N-Heterocyclic carbene-catalyzed [3 + 3] annulation of bromoenals with 2-aminochromones to access chromeno[2,3-<i>b</i>]pyridinones
Pengrui Jiang, Jingcheng Guo, Minghua Gong, Xiangui Zhou, Wei Cao, Zhenqian Fu, Wei Huang
Abstract
N-Heterocyclic carbene-catalyzed [3 + 3] annulation of bromoenals with 2-aminochromones has been successfully developed. A structurally diverse set of chromeno[2,3-b]pyridinones was efficiently constructed in acceptable to excellent yields. The reaction features mild reaction conditions, a broad substrate scope, and easy scale-up.
Topics & Concepts
AnnulationChemistryCarbeneCatalysisMedicinal chemistryCombinatorial chemistryStereochemistryOrganic chemistryN-Heterocyclic Carbenes in Organic and Inorganic ChemistryCatalytic Cross-Coupling ReactionsCatalytic C–H Functionalization Methods