Free-radical-mediated carbonylative cyclisation of alk-4-enyl halides leading to cyclopentanones
作者:Ilhyong Ryu、Kazuya Kusano、Mitsuharu Hasegawa、Nobuaki Kannbe、Noboru Sonoda
DOI:10.1039/c39910001018
日期:——
Alk-4-enyl bromides and iodides 1, when treated with the tributyltin hydride/CO system, undergo carbonylative cyclisation to give Cyclopentanones in good yields (AIBN cat., benzene, 75–90 atm, [1]= 0.025–0.05 mol dm–3, 80 °C, 2–3 h).
当阿尔基-4-烯基溴化物和碘化物1与三丁基锡氢化物/一氧化碳体系反应时,发生羰基化环化反应,较高产率地生成环戊酮(AIBN催化,苯,75-90大气压,[1]= 0.025-0.05mol dm–3,80°C,2-3小时)。