Dehydrohalogenation of haloalkanes promoted by metal halides. Hydrogen halometalates formation and their use as hydrohalogenating agents
作者:Angela R. Suárez、Sandra E. Martín、Marisa Martinelli、Marcelo E. Domine、María R. Mazzieri
DOI:10.1016/s0040-4020(98)00404-9
日期:1998.6
1-diphenylethanes, 1, to 2-halo-1,1-diphenylethene, 2, either at 76°C or at 50°C, promoted by catalytic amount of the anhydrous bromides of Fe(III), Ru(III) and Al(III) and Fe(III) chloride the chemical transformation of the metal halides was observed. In reactions carried out in vacuum or under nitrogen atmosphere, the hydrogen halide eliminated from the organic substrate reacted with the metal halides rendering the
在76°C或50°C下由催化量的无水溴化物促进的1,2-二卤代1,1,1-二苯乙烷1脱氢为2-卤代1,1,1-二苯乙烷2对Fe(III),Ru(III)和Al(III)和Fe(III)氯化物进行了观察,观察到了金属卤化物的化学转化。在真空中或在氮气氛下进行的反应中,从有机底物中除去的卤化氢与金属卤化物反应,形成不稳定的全卤化氢金属盐。我们证明这些化合物在4°C的烯烃的氢卤代反应中表现为卤化氢供体。