4-[(E)-2(二甲基氨基)乙烯基]吡唑并[5,1- c ]-[1,2,4]三叠氮基-3-基羧酸乙酯与7-[(E)-2-乙基研究了在各种溶剂中与肼的(二甲基氨基)乙烯基] [1,2,4]三唑并[1,5]嘧啶-6-基羧酸盐。吡啶酮循环的形成在二甲基甲酰胺或二甲基乙酰胺中区域特异性地进行。在乙酸或丙酸中发生区域选择性环化,导致稠合的1,2-二氮杂pine。
Regioselective and regiospecific reactions of ethyl ortho-(dimethylaminovinylazoloazinylcarboxylates with hydrazine
作者:V. V. Didenko、A. Yu. Potapov、I. V. Ledeneva、Kh. S. Shikhaliev、O. V. Konyushko
DOI:10.1134/s1070363210040225
日期:2010.4
Selectivity of reactions of ethyl 4-[(E)-2(dimethylamino)vinyl]pyrazolo[5,1-c]-[1,2,4]triazino-3-ylcarboxylates and ethyl 7-[(E)-2-(dimethylamino)vinyl][1,2,4]triazolo[1,5]pyrimidine-6-ylcarboxylates with hydrazine in various solvents was studied. The formation of a pyridone cycle proceeds regiospecifically in dimethyl formamide or dimethyl acetamide. A regioselective cyclization resulting in fused
4-[(E)-2(二甲基氨基)乙烯基]吡唑并[5,1- c ]-[1,2,4]三叠氮基-3-基羧酸乙酯与7-[(E)-2-乙基研究了在各种溶剂中与肼的(二甲基氨基)乙烯基] [1,2,4]三唑并[1,5]嘧啶-6-基羧酸盐。吡啶酮循环的形成在二甲基甲酰胺或二甲基乙酰胺中区域特异性地进行。在乙酸或丙酸中发生区域选择性环化,导致稠合的1,2-二氮杂pine。