SYNTHESIS OF PYRAZOLO[1,5-A]PYRIDINES AND PYRAZOLO[1,5-C]PYRIMIDINES BY REACTION OF HETEROCYCLIC AMIDRAZONES WITH 1,3-DICARBONYL COMPOUNDS

被引：0
作者：
KOCKRITZ, P
RIEMER, B
MICHLER, A
HASSOUN, A
LIEBSCHER, J
机构：
来源：
JOURNAL OF HETEROCYCLIC CHEMISTRY | 1994年 / 31卷 / 05期
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中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
1,3-Dicarbonyl compounds 2 react with 1-amino-2(1H)-pyridin-2-imines or 1-amino-2(1H)-pyrimidin-2-imines 1 giving new pyrazolo[1,5-a]pyridines or pyrazolo[1,5-c]pyrimidines 5 respectively by addition, oxidation and condensation. Isolation of an intermediate 3 shows that surprisingly the addition of the CH acidic 1,3-dicarbonyl compound to position 6 of the pyrimidine 1 is the initial step.
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页码：1157 / 1160
页数：4
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