作者:J. H. Atherton、R. Fields
DOI:10.1039/j39670001450
日期:——
Trifluoromethylcarbene, generated photolytically from 2,2,2-trifluorodiazoethane, reacts essentially stereo-specifically with trans- and cis-but-2-enes in the liquid phase, to give dimethyltrifluoromethylcyclopropanes, and olefinic insertion products. In the vapour phase, or in solution in an inert solvent, the degree of stereospecificity of the cyclopropane formation and the yield of insertion products
Trifluoromethylcarbene,从2,2,2- trifluorodiazoethane光解产生的,基本上发生反应立体特异地与反式-和顺-丁-2-烯类在液相,得到dimethyltrifluoromethylcyclopropanes,和烯属插入产品。在气相中或在惰性溶剂中的溶液中,环丙烷形成的立体有规度和插入产物的收率均较低,这与单线态三氟甲基卡宾的形成及其衰变成低能的三线态一致。汽相反应似乎涉及单分子单重态-三重态交叉。