Regiochemical Control of the Ring Opening of 1,2-Epoxides by Means of Chelating Processes. Part 14: Regioselectivity of the Opening Reactions with MeOH of Remote O-Substituted 1,2-Epoxycyclohexanes under Gas-Phase Operating Conditions
作者:Paolo Crotti、Valeria Di Bussolo、Lucilla Favero、Mauro Pineschi、Francesco Marianucci、Gabriele Renzi、Giuseppina Amici、Graziella Roselli
DOI:10.1016/s0040-4020(00)00643-8
日期:2000.9
was determined in the gas-phase in opening reactions with MeOH, using a gaseous acid (D3+, CnH5+, Me2F+) as the promoting agent. The results obtained indicate the incursion in the opening process in the gas phase of H+(or D+)-mediated chelated bidentate species completely absent in the corresponding reactions (methanolysis) carried out in the condensed phase.
使用气态酸(D 3 +,C n H 5 +,Me 2 F +)作为促进剂,在与MeOH进行开环反应的气相中,确定了具有远距离O-官能度的环己烯氧化物的区域化学行为。所获得的结果表明,在缩合相中进行的相应反应(甲烷分解)中完全不存在H +(或D +)介导的螯合双齿物质在气相中的打开过程。