Rhodium(III)-Catalyzed C–H Activation/Annulation with Vinyl Esters as an Acetylene Equivalent
作者:Nicola J. Webb、Stephen P. Marsden、Steven A. Raw
DOI:10.1021/ol502095z
日期:2014.9.19
The behavior of electron-richalkenes in rhodium-catalyzed C–H activation/annulation reactions is investigated. Vinyl acetate emerges as a convenient acetylene equivalent, facilitating the synthesis of sixteen 3,4-unsubstituted isoquinolones, as well as select heteroaryl-fused pyridones. The complementary regiochemical preferences of enol ethers versus enol esters/enamides is discussed.
作者:Gongming Zhu、Haiyang Zhang、Liyang Han、Honglei Wang、Anlian Zhu、Lingjun Li
DOI:10.1021/acs.orglett.4c01403
日期:2024.5.24
The intramolecular Curtiusrearrangement suffers from a high reaction temperature, low yields, tedious product isolation, and difficult scale up. This study presents a room-temperature Curtiusrearrangement that can be novelly driven by the HFIP solvent, followed by light-illuminated intramolecular cyclization. Such a mild reaction allows for the preparation of various fused pyridone derivatives with