作者:J. H. Atherton、R. Fields
DOI:10.1039/j39680001507
日期:——
2,2,2-Trifluorodiazoethane readily forms cyclopropanes when photolysed with suitable olefins. In the absence of light, a typical 1,3-dipolar addition gives Δ1-pyrazolines. This reaction, slow with ethylene, is retarded by alkyl substituents on the vinylic carbon, but accelerated slightly by halogens other than fluorine; a trifluoromethyl group has an accelerating effect of the same order of magnitude
当用合适的烯烃光解时,2,2,2-三氟重氮乙烷很容易形成环丙烷。在不存在光的,一个典型的1,3-偶极加成给出Δ 1 -pyrazolines。该反应在乙烯反应中较慢,但会受到乙烯基碳上的烷基取代基的阻滞,但受除氟以外的卤素的影响而略有加速。三氟甲基具有与烷氧羰基相同数量级的加速作用。