Reaction of 5-amino-1-aryl-3-methylpyrazoles with benzylidene derivatives of Meldrum's acid: Synthesis and characterization of pyrazolo[3,4-b]pyridinones

被引：60

作者：

Quiroga, J

Hormaza, A

Insuasty, B

Marquez, M

机构：

[1] Univ Valle, Dept Chem, Cali, Colombia

[2] Yale Univ, Dept Chem, New Haven, CT 06511 USA

来源：

JOURNAL OF HETEROCYCLIC CHEMISTRY | 1998年 / 35卷 / 02期

关键词：

D O I：

10.1002/jhet.5570350225

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A series of dihydropyrazolo[3,4-b]pyridin-6-ones 3 was prepared by cyclization of 5-amino-1-aryl-3-methylpyrazoles 1 and Meldrum's acid benzylidene derivatives 2 in nitrobenzene. The structure of 4,5-dihydropyrazolo[3,4-b]pyridin-6-ones and reaction orientation were determined by nmr measurements.

引用

页码：409 / 412

页数：4

共 14 条

[1] SYNTHESIS AND CHROMATOGRAPHIC-SEPARATION OF THE STEREOISOMERS OF FURNIDIPINE [J].