Aryliminodimagnesium Reagents. XI. Two-Electron Oxidation of the Reagent Molecules in the Reaction with Some Oxidizing Agents and with Strongly Push-Pull Substituted α-Benzylideneacetophenones
作者:Masao Okubo、Shunsei Yoshida、Yoshiji Egami、K\={o}ji Matsuo、Shigeru Nagase
DOI:10.1246/bcsj.60.1741
日期:1987.5
The reactions of an aryliminodimagnesium reagent (ArN(MgBr)2) with four oxidizing agents ((i): I2, OsO4, C6H5IO2, I2O5) and four push-pull substituted α-benzylideneacetophenones(ii) were examined. In the reactions with (i), the maximum yield of sym-azobenzene was 50%. In the reactions with (ii), in addition to products formed via condensation and the typical radical processes, unexpected products formed
检查了芳基亚氨基二镁试剂 (ArN(MgBr)2) 与四种氧化剂 ((i):I2、OsO4、C6H5IO2、I2O5) 和四种推拉取代的 α-亚苄基苯乙酮 (ii) 的反应。在与(i)的反应中,对偶偶氮苯的最大产率为50%。在与(ii)的反应中,除了通过缩合和典型的自由基过程形成的产物外,还观察到通过 C=C 和 Cβ-H 键断裂形成的意外产物。总结这些结果,已经提出了涉及通过芳胺基自由基 (Ar\.N}MgBr) 歧化形成芳基硝烯类物质的途径。