Novel Asymmetric Thiazolyl-Substituted Penta-1,4-Dien-3-Ones and 3,5-Diaryl-2-Pyrazolines
Various diaryl/hetaryl representatives of penta-1,4-dien-3-one series attract the attention of synthetic chemists during several decades owing to the possibility of their consequent chemical modification resulted in obtaining compounds of potential interest to materials science. In addition to their synthetic importance, title diarylideneacetones can be applied directly as medical drugs, such as antioxidants and anti-inflammatory agents. In this communication, we report the synthesis of a series of new asymmetric thiazole cycle containing diarylideneacetones, which further demonstrated high regioselectivity in their reaction with hydrazine. To clarify this feature, quantum-chemical modeling of the cyclization process was conducted.