In the reaction of p-MeC6H4N(MgBr)2 with p-alkoxynitrobenzene, no effect of alkoxyl chain length on the relative yields of azoxy and azo products was observed. In contrast, in the reaction of p-alkoxy-C6H4N(MgBr)2 with p-nitrotoluene, C12- and C18-alkoxyl chains led to the corresponding unsymmetrical azobenzenes in unexpectedly high yields. This result, arising from efficient condensation and deoxygenation processes, was explained in terms of cooperation of reagent molecules through their aggregation assisted by a novel tying effect of their long chains.
在p-Me (MgBr)2与p-烷氧基
硝基苯的反应中,烷氧基链长对偶氮和氧化偶氮产物的相对产率没有影响。相反,在p-烷氧基-
C6H4N(MgBr)2与p-
硝基甲苯的反应中,C12和C18烷氧基链导致相应的非对称
偶氮苯以出乎意料的高产率生成。这一结果源于高效的缩合与脱氧过程,其解释涉及通过长链的新颖束缚效应辅助的分子聚集,分子间的协同作用。