Isobutyraldehyde in the synthesis of isopropyl-substituted 4H-pyrans, 1,4-dihydropyrano[2,3-c]pyrazole, 1,4-dihydropyridines, and cyclobutane

被引：15
作者：
Dyachenko, VD [1 ]
Chernega, AN
机构：
[1] Shevchenko Natl Pedagog Univ, Lugansk, Ukraine
[2] Natl Acad Sci, Inst Organ Chem, Kiev, Ukraine
来源：
RUSSIAN JOURNAL OF GENERAL CHEMISTRY | 2005年 / 75卷 / 06期
关键词：
D O I：
10.1007/s11176-005-0351-6
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Condensation of isobutyraldehyde with CH acids, such as acetoacetanilide, dimedone, acetoacetamide, ethyl benzoylacetate, resorcinol, cyanoacetic acid, malononitrile, 3-methyl-1-ethyl-2-pyrazolin-5-one, benzoylacetone, and cyanoacetamide, in the presence of amines gave isopropyl-substituted 4H-pyrans, 1,4dihydropyrano[2,3-c]pyrazole, 4H-benzo[b]pyranes, 1,4-dihydropyridines, and 1,1-dicyano-2-(1-cyano-lethoxycarbonyl)methyl-4-isopropyl-3,3-dimethyleyclobutane. The structure of the latter product was studied by X-ray diffraction analysis.
引用
收藏
页码：952 / 960
页数：9
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