SYNTHESIS OF 1,2,4-TRIAZOLIUM SALTS - REACTION OF 1-AZO-2-AZONIA-ALLENE SALTS WITH NITRILES

被引：6
|
作者：
AMER, AM
机构：
[1] Chemistry Department, Faculty of Science, Zagazig University, Zagazig
来源：
MONATSHEFTE FUR CHEMIE | 1995年 / 126卷 / 04期
关键词：
HYDRAZONES; HETEROCUMULENES; NITRILES; TRIAZOLES; REARRANGEMENTS;
D O I：
10.1007/BF00813205
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Alkyl ketone hydrazones 1 are oxidized with tert-butylhypochlorite to give geminal chloro azo compounds 2. These react with SbCl5, to give 1-aza-2-azonia-allene salts 3 as reactive intermediates which are intercepted with nitriles to yield 3H-1,2,4-triazolium salts 5. In most cases these salts rearrange spontaneously to form 1H-triazolium salts 6. Hydrolysis of 6e-g by NaOH provide bases 7a-c, which react with picric acid to give 1H-pyrazolium picrates 8.
引用
收藏
页码：431 / 437
页数：7
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