CONDENSATION OF 2-NITROBENZALDEHYDE WITH PYRAZOLIN-5-ONES - STRUCTURE OF 4-(2'-NITROBENZY-LIDENE)PYRAZOLIN-5-ONES AND THEIR REDUCTIVE CYCLIZATION

被引：0
|
作者：
DANEL, A
TOMASIK, P
机构：
来源：
POLISH JOURNAL OF CHEMISTRY | 1995年 / 69卷 / 07期
关键词：
2-NITROBENZALDEHYDE; 4-(2'-NITROBENZYLIDENE)-PYRAZOLIN-5-ONES; 2-NITROPHENYL-4'; 4''-DI(PYRAZOLIN-5-ONE)YL-METHANE; PYRAZOLO[3,4-B]QUINOLINES; REDUCTIVE CYCLIZATION;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The condensation of 1-H-3-methyl-, 3-methyl-1-phenyl-, 1,3-diphenyl- and 1-methyl-3-phenyl-pyrazolin-5-ones with 2-nitrobenzaldehyde resulted in forming the corresponding 4-(2'-nitrobenzylidene)pyrazolin-5-ones. In some cases these products were assisted by side products formed by the condensation of two molecules of pyrazolin-5-ones with one molecule of the aldehyde. All the benzylidene compounds were cyclized on reduction of the nitro group to the amino group. The cyclization confirms that all the benzylidene compounds prepared were the cis-isomers. The UV absorption spectra confirm additionally their structures.
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页码：1013 / 1017
页数：5
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