Synthesis of substituted 6-amino-4-aryl-5-cyano-2h,4h-pyrano[2,3-c]pyrazoles. Crystal and molecular structure of 6-amino-5-cyano-3-methyl-4-(2′,4′,6′-triethylphenyl)-2h,4h -pyrano[2,3-c]pyrazole

被引：0

作者：

Shestopalov A.M. ^{[1
]}

Yakubov A.P. ^{[1
]}

Tsyganov D.V. ^{[1
]}

Emel'yanova Yu.M. ^{[1
]}

Nesterov V.N. ^{[2
]}

机构：

[1] N. D. Zelinsky Inst. of Organ. Chem., Russian Academy of Sciences

[2] A. N. N. Inst. Organoelement Comps., Russian Academy of Sciences

来源：

Chemistry of Heterocyclic Compounds | 2002年 / 38卷 / 10期

关键词：

Michael adduct; Pyran; Pyranopyrazole; Pyrazole; X-ray crystallographic analysis;

D O I：

10.1023/A:1021773228201

中图分类号：

学科分类号：

摘要：

Substituted 6-aminopyrano[2,3-c]pyazoles were synthesized by the two-component condensation of arylidenemalononitriles and substituted 5-pyazolones or three-component condensation of aromatic aldehydes, malononitrile, and substituted 5-pyazolones. It was established by X-ray crystallographic analysis that pyranopyrazoles exist in the 2H and not the 1H tautomeric form.

引用

页码：1180 / 1189

页数：9

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