Photoreactive fused aziridinylpiperazines on the background of 4-substituted chalcones and their benzimidazolic analogs
作者:Volodymyr M. Kotlyar、Oleksii O. Kolomoitsev、Dmytro V. Nikolaievskyi、Polina I. Pedan、Andrii Yu Chumak、Valery D. Orlov、Svitlana V. Shishkina、Andrey O. Doroshenko
DOI:10.1016/j.molstruc.2018.12.015
日期:2019.3
Abstract The reaction of bromo-substituted chalcones with various diamino-compounds leads to the fused heterocyclic products, aziridinylpiperazines, exhibiting photoreactivity in the crystalline state. Crystals of 4-nitrosubstituted compounds of this family change their color from yellowish to deep violet-blue, 4-cyanosubstituted ones – from yellowish to pink at UV irradiation. Discussion on the mechanism
摘要 溴代查耳酮与各种二氨基化合物反应生成稠合杂环产物氮丙啶基哌嗪,在结晶状态下表现出光反应性。该家族的 4-硝基取代化合物晶体的颜色从淡黄色变为深紫蓝色,4-氰基取代化合物的颜色在紫外线照射下从淡黄色变为粉红色。关于这种光转化机制的讨论仍在进行中,然而,有几个事实表明光生有色半成品的自由辐射性质仅通过照射样品的结晶状态稳定。在合成标题化合物时,在溴查耳酮与脂肪族/脂环族或芳香族系列的不对称二胺相互作用时形成位置异构体的混合物也具有重要意义。