Synthesis of azoxybenzene-SbCl5 complexes and their selective ortho-wallach rearrangement
作者:Jiro Yamamoto、Yukihiro Nishigaki、Masahiro Umezu、Teruo Matsuura
DOI:10.1016/0040-4020(80)80162-1
日期:1980.1
equimolar solution of various azoxybenzenes and SbCl5 in carbon tetrachloride were mixed, a 1:1 complex immediately deposited as orange crystals in high yield. The thermal reaction of these complexes in inert solvents gives o-hydroxy-azobenzene selectively. On the contrary, other Lewis acids such as TiCl4, AlCl3, FeCl3 and ZnBr2 failed to give an isolatable complex with azoxybenzene, and their direct thermal
当将各种乙氧基苯和SbCl 5的等摩尔溶液混合在四氯化碳中时,1:1的络合物立即以橙色晶体的形式高收率沉积。这些络合物在惰性溶剂中的热反应选择性地产生了邻羟基-偶氮苯。相反,其他路易斯酸如TiCl 4,AlCl 3,FeCl 3和ZnBr 2不能与乙氧基苯形成可分离的配合物,它们与乙氧基苯的直接热反应导致脱氧,从而产生了偶氮苯作为主要产物。