Enamine chemistry. Part IV. Reaction of αβ-unsaturated acid chlorides with enamines of aldehydes
作者:P. W. Hickmott、B. J. Hopkins
DOI:10.1039/j39680002918
日期:——
The reaction of acryloyl chloride with 2-methyl-1-piperidinopropene in boiling benzene gives 2,2,6,6-tetramethyl-3-oxoheptane-1,7-dial, whereas crotonoyl and cinnamoyl chlorides give mixtures of the corresponding unsaturated 2-acyl-2-methylpropanal and unsaturated carboxamide. 2-Methyl-1-(pyrrolidin-1-yl)propene and crotonoyl chloride react at room temperature to give an iminium salt which may be hydrolysed
丙烯酰氯与2-甲基-1-哌啶基丙烯在沸腾的苯中的反应生成2,2,6,6-四甲基-3-氧庚烷-1,7-二拨号,而巴豆酰氯和肉桂酰氯则得到相应的不饱和2-酰基-2-甲基丙醛和不饱和羧酰胺。2-甲基-1-(吡咯烷-1-基)丙烯与巴豆酰氯在室温下反应生成亚胺盐,该亚胺盐可水解为2-二氢吡喃基-2-甲基丙醛或加热转化为第二亚胺盐水解得到2,2,5,6,6-五甲基-3-氧庚烷-1,7-二聚体。讨论了反应机理。