Dimephosphone (2-dimethoxyphosphoryl-2-methylpentan-4-one) phenyl-, nitrophenyl-, benzoyl-, and 4-nitrobenzoylhydrazones were synthesized. The compounds in crystals were shown to have a steric form exclusively of the E-isomer. The structure of hydrazones in solution is defined by the nature of the substituents and the solvent and the time of storage of the solution. The dimephosphone aroylhydrazones
合成了二
甲基膦(2-二甲氧基
磷酰基-2-甲基戊-4-酮)苯基-,
硝基苯基-,苯甲酰基-和4-
硝基苯甲酰基hydr。显示晶体中的化合物仅具有E-异构体的空间形式。溶液中的结构由取代基和溶剂的性质以及溶液的储存时间决定。酸性溶液中的二甲膦酰基芳酰基hydr以几种可能的形式存在:
亚胺键处的异构体,酰胺键处的构象异构体和环状互变异构体(1,3,4-恶二唑啉)。