THE REACTIONS OF 3-DIAZOPYRAZOLO[3,4-B]PYRIDINE DERIVATIVES WITH REACTIVE METHYLENE-COMPOUNDS

被引：0
|
作者：
ELMOBAYED, M [1 ]
ESSAWY, AN [1 ]
ELBAHNASAWI, A [1 ]
AMER, AM [1 ]
机构：
[1] ZAGAZIG UNIV,FAC SCI,DEPT CHEM,ZAGAZIG,EGYPT
来源：
GAZZETTA CHIMICA ITALIANA | 1991年 / 121卷 / 04期
关键词：
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Diazotised 3,6-diamino-4-phenylpyrazolo[3,4-b]pyridine-5-carbonitrile, 2, reacted with active methylene reagents and with beta-naphthol to yield pyrido[3',2':4,5]pyrazolo[3,2-c]-1,2,4-triazine derivatives (4a-d) and a pyrido[3',2':4,5]pyrazolo[3,2-c]naphtho[2,1-e]-1,2,4-triazine derivative, 6, respectively. Compound 2 coupled with 3-methyl-5-pyrazolone and 1-phenyl-3-methyl-5-pyrazolone to yield the corresponding azo compounds (7a,b). Cyclisation of compound 7b yielded 8-chloro-3-methyl-1,6diphenylpyrido[3',2':4,5]dipyrazolo[3,2-c:3',4'-c]-1,2,4-triazine-7-carbonitrile, 9. Reaction of 2 with dimethyl acetylenedicarboxylate is also described.
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页码：209 / 212
页数：4
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