SYNTHESIS OF SUBSTITUTED NICOTINAMIDES FROM ENAMINES DERIVED FROM N,N-DIMETHYLFORMAMIDE DIMETHYL ACETAL

被引:0
|
作者
ABUSHANAB, FA
ALY, FM
WAKEFIELD, BJ
机构
[1] UNIV SALFORD,DEPT CHEM & APPL CHEM,SALFORD M5 4WT,LANCS,ENGLAND
[2] AL-AZHAR UNIV,FAC SCI,DEPT CHEM,CAIRO,EGYPT
来源
SYNTHESIS-STUTTGART | 1995年 / 08期
关键词
1,2-DIHYDRO-2-OXOPYRIDINE-3-CARBOXAMIDES 1,2-DIHYDRO-2-THIOXOPYRIDINE-3-CARBOXAMIDES; MALONAMIDE; CYANOTHIOACETAMIDE; CYANOACETAMIDE;
D O I
暂无
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Reactions of 1,3-dicarbonyl compounds with N,N-dimethylformamide dimethyl acetal followed by malonamide in the presence of sodium hydride give 5,6-disubstituted 1,2-dihydro-2-oxopyridine-3-carboxamides 3 a-c, whereas reactions of the intermediate enamines with cyanothioacetamide or cyanoacetamide in the presence of piperidine give 4,5-disubstituted 1,2-dihydro-2-thioxopyridine-3-carboxamides 6 a-c and 1,2-dihydro-2-oxopyridine-3-carboxamides 6 d-b.
引用
收藏
页码:923 / 925
页数:3
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