Synthesis of Indenone-Fused Pyran Derivatives from Aryl Enaminones and Cyclopropenones through Unsymmetrical Relay C–H Bond Activation and Double C–C/C–O Bond Formation
作者:Chun Yang、Bin Li、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.orglett.4c02197
日期:2024.8.9
Presented herein is a novel synthesis of indenone-fused pyran derivatives via the cascade reactions of aryl enaminones with cyclopropenones. The formation of products involves a one-potcascade procedure consisting of aryl C–H bond and enamine C–H bond functionalization along with C–Cbond cleavage of cyclopropenone and 1,3-rearrangement of the in situ-formed allylic alcohol moiety followed by intramolecular