Cyclopropane chemistry. Part 5 [1,2]. Hexafluorocyclopropane as a source of difluorocarbene
作者:J.Michael Birchall、Roy Fields、Robert N. Haszeldine、Reginald J. McLean
DOI:10.1016/s0022-1139(00)85225-2
日期:1980.6
yields of the corresponding 1,1-difluorocyclopropanes, formed by addition of difluorocarbene to the olefin. The tetrafluoroethylene formed dimerises to octafluorocyclobutane, co-dimerises with the olefin, or survives, depending on the reaction conditions. With allene, hexafluorocyclopropane gives 1-(difluoromethylene)cyclopropane, 2,2,3,3-tetrafluorospiropentane, and products derived from tetrafluoroethylene
在
乙烯,
丙烯,
氯乙烯和
溴化
乙烯的存在下对六
氟环丙烷进行热解可得到相应的
1,1-二氟环丙烷的良好收率,该反应是通过在烯烃中加成
二氟卡宾而形成的。取决于反应条件,形成的
四氟乙烯二聚为
八氟环丁烷,与烯烃共二聚或存活。六
氟环丙烷与
丙二烯一起生成1-(二
氟亚甲基)
环丙烷,2,2,3,3-四
氟螺戊烷以及由
四氟乙烯和
丙二烯衍生的产物。