149357-91-5Relevant articles and documents
Photoreactive fused aziridinylpiperazines on the background of 4-substituted chalcones and their benzimidazolic analogs
Kotlyar, Volodymyr M.,Kolomoitsev, Oleksii O.,Nikolaievskyi, Dmytro V.,Pedan, Polina I.,Chumak, Andrii Yu,Orlov, Valery D.,Shishkina, Svitlana V.,Doroshenko, Andrey O.
, p. 741 - 746 (2019/01/10)
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 of this phototransformation is still in progress, however, several facts points to the free radial nature of the photogenerated colored semi-products stabilized only by crystalline state of the irradiated samples. Formation of a mixture of positional isomers at interaction of bromo-chalcones with asymmetric diamines of aliphatic/alicyclic or aromatic series at synthesis of the title compounds is of significant interest as well.
