A facile acid catalysed ring transformation of 4H-pyrans to 1,2,3,4-tetrahydropyridin-2-ones and 3,4-dihydronaphtho[1,2-b]pyran-2(H)-ones

被引：0
|
作者：
Srivastava, S [1 ]
Batra, S [1 ]
Bhaduri, AP [1 ]
机构：
[1] CENT DRUG RES INST,DIV MED CHEM,LUCKNOW 226001,UTTAR PRADESH,INDIA
来源：
INDIAN JOURNAL OF CHEMISTRY SECTION B-ORGANIC CHEMISTRY INCLUDING MEDICINAL CHEMISTRY | 1996年 / 35卷 / 06期
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D O I：
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中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
An acid catalysed ring transformation of 5-acyl/alkoxycarbonyl-2-amino-4-aryl-3-cyano-6-methyl-4H-pyrans (1-3) to give 5-acyl/alkoxycarbonyl-4-aryl-3-cyano-1,2,3,4-tetrahydropyridin-2-ones (5-7) in the presence of formic acid has been carried out. The first report on a facile acid catalysed novel rearrangement of 2-amino-4-aryl-3-cyano-4H-naphtho[1,2-b]pyrans (4a-c) to 4-aryl-3-cyano-3,4-dihydronaphtho[1, 2-b]pyran-2(H)-ones (8a-c) under similar conditions is also described.
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页码：602 / 604
页数：3
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