Substituted hydrazones 5 and 6 were synthesized by the reaction of the corresponding furo[3,2-b]pyrrole-5-carboxyhydrazides 1 with 6-substituted 4-oxochromene-3-carbaldehydes 2 and methyl 2-formylfuro[3,2-b]pyrrole-5-carboxylates 3 under microwave irradiation as well as by the classical method. The beneficial effect of the microwave irradiation on these reactions was a shortening of the reaction time and an increase in the yields. The reactions of 1 with 4-[(4-oxochromen-3-yl)methylidene]-2-phenyloxazol-5(4H)-one (4) were also studied. Compounds 7 or 8 were obtained, depending on the reaction temperature.
通过微波辐射,将相应的
呋喃[3,2-b]
吡咯-5-羧酰
肼 1 与6-取代的4-
氧基
色酮-3-甲醛 2 和
甲基-
2-甲酰基
呋喃[3,2-b]
吡咯-5-
羧酸酯 3 反应,合成了取代
肼酮 5 和
6。这些反应中微波辐射的有益效果是缩短了反应时间并提高了产率。此外,还研究了
1 与4-[(4-
氧基
色酮-3-基)甲亚
甲基]-2-
苯氧唑-5(4H)-
酮 (
4) 的反应。取决于反应温度,得到了化合物
7 或
8。