The addition of free radicals to unsaturated systems. Part XV. Further investigation of the direction of radical addition to chloro-1,1-difluoroethylene
作者:R. Gregory、R. N. Haszeldine、A. E. Tipping
DOI:10.1039/j39680003020
日期:——
reaction of chloro-1,1-difluoroethylene with trifluoroiodomethane gives a 92% yield of the 1 : 1 adducts 3-chloro-1,1,1,2,2-pentafluoro-3-iodopropane and 2-chloro-1,1,1,3,3-pentafluoro-3-iodopropane in the ratio 92 : 8. The major by-product is 1,1-difluoroiodoethylene. Reaction at 225° gives a low yield of the same 1 : 1 adducts (ratio 98 : 2). Irradiation of 3-chloro-1,1,1,2,2-pentafluoro-3-iodopropane gives
氯-1,1-二氟乙烯与三氟碘甲烷的光化学反应产生92:%的1:1加合物3-氯-1,1,1,2,2-五氟-3-碘丙烷和2-氯-1,1的产率为92%比例为92:8的1,1,3,3-五氟-3-碘丙烷。主要副产物为1,1-二氟碘乙烯。在225°反应时,相同的1:1加合物的收率低(比率98:2)。辐照3-氯-1,1,1,2,2-五氟-3-碘丙烷是主要产物三氟碘甲烷,三氟氯甲烷和1,1-二氟碘乙烯。溴化氢与氯-1,1-二氟乙烯的光化学反应导致仅形成1-溴-2-氯-1,1-二氟乙烷。