Synthesis of Pyrimidine Annelated Heterocycles [1]. Regioselective Heterocyclization of 6-Cyclopent-2-enyl-5-hydroxy-1,3-dimethyl-pyrimidine-2,4(1H,3H)-dione and 5-Cyclopent-2-enyl-6-hydroxy-1,3-dimethylpyrimidine-2,4(1H,3H)-dione

被引：0
|
作者：
Krishna C. Majumdar
Uday K. Kundu
Swapan K. Samanta
Nirmal K. Jana
机构：
[1] Department of Chemistry,
[2] University of Kalyani,undefined
[3] Kalyani-741 235,undefined
[4] W.B,undefined
[5] India,undefined
来源：
Monatshefte für Chemie / Chemical Monthly | 2003年 / 134卷
关键词：
Keywords. Pyridine hydrotribromide; Heterocycles; Cyclization; Hexamethylenetetramine hydrotribromide; 6-endo Cyclization.;
D O I：
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学科分类号：
摘要：
 Two hitherto unreported pyrimidine annelated heterocycles were synthesized from 6-cyclopent-2-enyl-5-hydroxy-1,3-dimethylpyrimidine-2,4(1H,3H)-dione and 5-cyclopent-2-enyl-6-hydroxy-1,3-dimethylpyrimidine-2,4(1H,3H)-dione by reaction with pyridine hydrotribromide or hexamethylenetetramine hydrotribromide. The first one was also obtained by reaction with concentrated sulfuric acid.
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页码：1137 / 1143
页数：6
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