Synthesis of 2,3,4,6-tetrasubstituted pyridines as precursors to Bicycles and polycycles

被引:11
作者
Abu-Shanab, FA [1 ]
机构
[1] Al Azhar Univ, Fac Sci, Dept Chem, Assiut 71524, Egypt
来源
JOURNAL OF CHEMICAL RESEARCH-S | 1999年 / 07期
关键词
D O I
10.1039/a806439c
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Ammonium 1,1,3-tricyano-2-methylprop-2-enide 1a and sodium 2-amino-1,1,3-tricyanoprop-2-enide 1b are treated with H2S in absolute ethanol to afford 3,4,6-trisubstituted pyridine-2(1H)-thione 3a,b; their structures are confirmed by reaction with phenacyl bromide to give 4a,b; also 3a,b reacts with DMFDMA to give 6a,b, and on treatment of 6a with phenacyl bromide affords 8; reaction of 4b with DMFDMA gave 9 while methylation of 3a,b by methyl iodide in ethanolic sodium hydroxide gives 10a,b.
引用
收藏
页码:430 / 431
页数:3
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