Oxidation of methyl enones with selenium dioxide leads to a cascade of reactions culminating in the formation of isotetronic acids.
甲基烯酮与二氧化硒氧化反应会引发一系列反应,最终形成异四氢呋喃酸。
Me<sub>3</sub>SiCF<sub>2</sub>Br-Self-Assisted Domino Reaction: Catalytic Synthesis of α,α-Difluorocyclopentanones from Methylvinylketones
作者:Jian Chang、Cong Xu、Jie Gao、Fengyun Gao、Dongsheng Zhu、Mang Wang
DOI:10.1021/acs.orglett.7b00611
日期:2017.4.7
in the domino conversion of methylvinylketones into α,α-difluorinated cyclopentanones. Initiated by 5 mol % of nBu4NBr, the multistep reaction occurred in one pot under mild conditions via the in situ formation of silyl dienol ethers, difluorocyclopropanation, thermal vinylcyclopropane–cyclopentene rearrangement, and desilylation. The process takes advantage of the multitasking capability of Me3SiCF2Br