Condensation of 2-(4-chlorophenyl)-1-(2,4-dihydroxyphenyl) ethanone with N,N-dimethylformamide dimethyl acetal: an effective approach to 3-(4-chlorophenyl)-7-methoxy-4H-chromen-4-one, N,O- and N,N-heterocycles
作者:Viktoriia S. Moskvina、Sergey V. Shilin、Volodymir P. Khilya
DOI:10.1007/s10593-015-1777-3
日期:2015.9
been developed. It has been demonstrated that the use of 1-(2,4-dihydroxyphenyl)ethanone or 1-(2-hydroxy-4-methoxyphenyl)ethanone in a condensation reaction with N,N-dimethylformamide dimethyl acetal leads to their heterocyclization to give an isoflavone. Reactions of the enamino ketone with N,O- and N,N-binucleophiles have been studied; as the result, 4,5-diarylisoxazole, 4,5-diarylpyrazoles, and 4
已经开发了制备2-(4-氯苯基)-1-(2,4-二甲氧基苯基)-3-(二甲基氨基)丙-2-烯-1-酮的方便顺序。已经证明在与N,N-二甲基甲酰胺二甲基乙缩醛的缩合反应中使用1-(2,4-二羟基苯基)乙酮或1-(2-羟基-4-甲氧基苯基)乙酮会导致它们的杂环化,从而得到异黄酮。研究了烯氨基酮与N,O-和N,N-双亲核试剂的反应; 结果,以良好的收率获得了4,5-二芳基异恶唑,4,5-二芳基吡唑和4,5-二芳基取代的2-氨基嘧啶。