Facile syntheses of new pyrazolo [1,5-a] pyrimidines derivatives via reactions of enaminones with aminopyrazole

被引：0

作者：

Li, M ^{[1
]}

Wang, SW

Wen, LR

Ke, ZQ

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Qingdao 266042, Peoples R China

[2] Xinjiang Normal Univ, Dept Chem, Urumqi 830054, Peoples R China

来源：

CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2005年 / 21卷 / 06期

关键词：

pyrazolo [1,5-a] pyrimidine; enaminone; synthesis; mechanism; crystal structure;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ethyl 7-aryl-2-benzylthiopyrazolo [1, 5-a] pyrimidine-3-carboxylates ( 3a-3f) were conveniently synthesized through the reactions of enaminones with 5-amino-3-benzylthio-4-ethoxycarbonyl-1H-pyrazole in good yields and high regioselectivity. The structures of the new compounds were fully characterized by spectroscopic measurments, elemental analysis and X-ray diffraction analysis. A plausible reaction mechanism for the formation of the title compounds was also presented.

引用

页码：663 / 667

页数：5

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