Synthesis of chroman-4-one and indanone derivatives via silver catalyzed radical ring opening/coupling/cyclization cascade
作者:Qiang Liu、Guanqun Xie、Qiang Wang、Zhendong Mo、Chen Li、Shujiang Ding、Xiaoxia Wang
DOI:10.1016/j.tet.2019.130490
日期:2019.10
conveniently synthesized from readily available cyclopropanols and alkenyl aldehydes via a silver catalyzed radical ring-opening/coupling/cyclization cascade. The reaction proceeded under mild and neutral conditions with broad substrate scope and afforded the desired products in moderate to good yields. A probable mechanism for the cascade reaction was also proposed.
Preparation of Zinc–Homoenolate from α-Sulfonyloxy Ketone and Bis(iodozincio)methane
作者:Kenichi Nomura、Seijiro Matsubara
DOI:10.1246/cl.2007.164
日期:2007.1
Treatment of α-sulfonyloxy ketone with bis(iodozincio)-methane gives a zinc cyclopropoxide which is formed via a nucleophilic addition of the reagent to carbonyl group followed by an intramolecular substitution reaction.