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

页码：431 / 437

页数：7

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