SYNTHESIS OF N-ALKYL-N'-(4-DIAZO-5-PYRAZOLYL)UREAS AND THEIR CONVERSION INTO PYRAZOLO[3,4-D][1,2,3]TRIAZOLE AND PYRAZOLO[3,4-D]OXAZOLE DERIVATIVES

被引：0
作者：
VICENTINI, CB
VERONESE, AC
POLI, T
GUARNERI, M
GIORI, P
机构：
来源：
HETEROCYCLES | 1991年 / 32卷 / 04期
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中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The synthetic route to N-alkyl-N'-(4-diazo-5-pyrazolyl)ureas (4) starting from pyrazolo[4,3-c] [1,2,5]oxadiazin-3(5H)-one (1) is described. Compounds (4) undergo thermal and photochemical reactions affording pyrazolo[3,4-d] [1,2,3]triazoles (5) and pyrazolo[3,4-d]oxazoles (7) respectively.
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页码：727 / 734
页数：8
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