Palladium-Catalyzed Carbonylative Cyclization of Aryl Alkenes/Alkenols: A New Reaction Mode for the Synthesis of Electron-Rich Chromanes
作者:Shuang Li、Fuzhuo Li、Jianxian Gong、Zhen Yang
DOI:10.1021/acs.orglett.5b00214
日期:2015.3.6
The Pd(II)-catalyzed intramolecular carbonylative cyclization reaction of aryl alkenes and aryl alkenols is reported for the synthesis of structurally diverse chromanes. PdCl2(CH3CN)2 was used as the catalyst and CuCl2 as the oxidant under the balloon pressure of CO. The reaction is conducted under mild conditions, and chromane-type esters and lactones can be generated in a highlyregio- and stereoselective
Photoredox Catalyzed Intramolecular Fluoroalkylarylation of Unactivated Alkenes
作者:Zuxiao Zhang、Henry Martinez、William R. Dolbier
DOI:10.1021/acs.joc.6b03012
日期:2017.3.3
bond formation to an aryl ring is reported. The reactions are conducted under mild conditions and afford tetralin derivatives bearing difluoromethyl as well as other fluoroalkyl groups in good to high yields. In addition, the study indicates that 6-exo radical cyclization of an alkyl radical to a phenyl ring is faster than the respective 5-exo radical cyclization. A computational study provides insights