Synthesis of some pyrazolo[1,5-c][1,3]benzoxazines and a new 5H-pyrazolo[1,5-c][1,3,2]benzoxazaphosphorine ring system

被引：6

作者：

Svetlik, J

Pronayova, N

Kubista, J

机构：

[1] Comenius Univ, Fac Pharm, Dept Pharmaceut Anal & Nucl Pharm, SK-83232 Bratislava, Slovakia

[2] Slovak Univ Technol Bratislava, NMR Lab, Bratislava 81237, Slovakia

[3] J Heyrovsky Inst Phys Chem, Prague 18223, Czech Republic

来源：

JOURNAL OF HETEROCYCLIC CHEMISTRY | 2005年 / 42卷 / 06期

关键词：

D O I：

10.1002/jhet.5570420616

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Condensations of 5-(2-hydroxyphenyl)pyrazoline 3a with 4-carboxybenzaldehyde, glyoxylic acid and N,N'-carbonyldiimidazole leading to pyrazolobenzoxazine derivatives were studied. The observed diastereoselectivity is discussed. Reaction of 3a with Lawesson reagent gave rise to a new 5H-pyrazolo[1,5-c]-[1,3,2]benzoxazaphosphorine heterocyclic system.

引用

页码：1143 / 1147

页数：5

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