Gas-phase pyrolysis of 1-chloro-1-fluoro-2-methylcyclopropanes in the presence of SiO2 or Al2O3 with the formation of 2-chloro- or 2-fluorobuta-1,3-dienes
作者:N. V. Volchkov、M. B. Lipkind、M. A. Novikov、O. M. Nefedov
DOI:10.1007/s11172-014-0730-4
日期:2014.10
Gas-phase pyrolysis of of 1-chloro-1-fluoro-2-methylcyclopropanes in an empty or filled with quartz pieces flow-tube reactor at 430—460 °C gives 2-fluorobuta-1,3-dienes (in 42—75% yields), whereas pyrolysis in the presence of Al2O3 at 150—250 °C gives 2-chlorobuta-1,3-dienes as the major products (in 58—68% yield).
在430—460°C下,1-氯-1-氟-2-甲基环丙烷在空流管反应器或填充有石英片的流管反应器中的气相热解,生成2-氟丁二烯(产率为42—75%),而在150—250°C下,在氧化铝存在的条件下进行热解,主要产物为2-氯丁二烯(产率为58—68%)。