Visible-light-enabled aerobic synthesis of benzoin bis-ethers from alkynes and alcohols
作者:Wen-Long Lei、Biao Yang、Qing-Bao Zhang、Pan-Feng Yuan、Li-Zhu Wu、Qiang Liu
DOI:10.1039/c8gc02766h
日期:——
atom-economical and good regioselective method for the synthesis of benzoin bis-ethers has been developed via directly using readily available alkynes and alcohols as raw materials under visible light irradiation. The protocol utilizes commercial Mes-Acr+ClO4− as an organophotoredox catalyst and air (O2) as a green sustainable reagent. A range of benzoin bis-ether derivatives were easily and efficiently obtained
2,4,4,6-Tetrabromocyclohexa-2,4-dienone: a new electron acceptor in the photosensitized oxidation of unsaturated substrates
作者:Luigi Lopez、Vincenzo Calò
DOI:10.1039/c39840001266
日期:——
2,4,4,6-Tetrabromocyclohexa-2-4-dienone, usually used as a mild and selective brominating agent, acts as an electronacceptor in the sensitized photo-oxygenation of several unsaturatedsubstrates; a mechanism is proposed.