Reactions of Cyanothioacetamide: Synthesis of Several New Thioxohydro-pyridine-3-carbonitrile and Thieno[2,3-b]pyridine Derivatives
作者:Fawzy A. Attaby、Sanaa M. Eldin、Mohamed A. A. Elneairy、Ali K. K. El-Louh
DOI:10.1080/10426500490475058
日期:2004.11.1
Cyanothioacetamide (f 1) reacted with α,β -unsaturated carbonyl compounds 2a–d to afford thioxohydropyridine-3-carbonitriles 5a–d, which were used as the starting materials for the preparation of several thienopyridines via their reactions with active halogen-containing compounds, e.g., 2-bromo-1-phenylethanone (7a), 2-bromo-1-p-tolyl-ethanone (7b), chloroacetone (10a), α -chloroacetylacetone (10b)
氰基硫代乙酰胺 (f 1) 与 α,β-不饱和羰基化合物 2a-d 反应得到 thioxohydropyridine-3-carbonitriles 5a-d,它被用作通过与活性含卤素化合物反应制备几种噻吩并吡啶的起始材料例如,2-溴-1-苯基乙酮(7a)、2-溴-1-对甲苯基-乙酮(7b)、氯丙酮(10a)、α-氯乙酰丙酮(10b)和氯乙酸乙酯(13)。新合成的杂环化合物的结构是基于元素分析、IR、 1 H NMR和质谱数据确定的。