Transformations of 2,2,6-trimethyl-1,3-dioxen-4-one with heterocyclic amines and other amino compounds
作者:Rok Zupet、Miha Tišler、Ljubo Golič
DOI:10.1002/jhet.5570280715
日期:1991.11
Heterocyclic amines were acetoacetylated with 2,2,6-trimethyl-1,3-dioxen-4-one and the obtained compounds reacted on the reactive methylene group to give C-substituted products. Nitrosation, followed by reduction afforded a pyrazine derivative. Azido- or chloroacetamide were also acetoacetylated, with heterocyclic amines, the corresponding enamines were prepared and reduction of the azido group of
杂环胺用2,2,6-三甲基-1,3-二恶英-4-酮乙酰乙酰化,所得化合物在反应性亚甲基上反应,得到C-取代的产物。亚硝化,然后还原得到吡嗪衍生物。叠氮基或氯乙酰胺也被乙酰乙酰化,用杂环胺,制备了相应的烯胺,还原了15种叠氮基,得到了化合物22和/或取代的3-氧代丁酸23的酰胺。化合物的X射线结构测定23A显示,关于双键的取向是ž。