Reactions of 2-benzylidene-3-methyl-4-nitro-2,5-dihydrothiophene 1,1-dioxide with CH acids
作者:V. M. Berestovitskaya、M. V. Selivanova、M. I. Vakulenko、I. E. Efremova、G. A. Berkova
DOI:10.1134/s1070428009120100
日期:2009.12
2-Benzylidene-3-methyl-4-nitro-2,5-dihydrothiophene 1,1-dioxide reacted with acyclic CH acids (acetylacetone, diethyl malonate, and its derivatives) according to the 1,4-addition pattern, whereas reactions of the title compound with cyclohexane-1,3-dione and 5,5-dimethylcyclohexane-1,3-dione (dimedone) were complicated by subsequent intramolecular heterocyclization leading to thieno[3,2-b]chromene
2-苄叉基-3-甲基-4-硝基-2,5-二氢噻吩1,1-二氧化物与无环CH酸(乙酰丙酮,丙二酸二乙酯及其衍生物)按照1,4-加成模式反应,而具有环己烷-1,3-二酮和5,5-二甲基环己烷-1,3-二酮(二甲酮)的标题化合物由于随后的分子内杂环化而复杂化,从而产生噻吩并[3,2- b ]亚甲基苯衍生物。