N-ethylaminopropanoate (secondary amine) to ethyl 3-F-alkylpropynoate leads in excellent yields to enaminoesters of Z and E configuration respectively. Heterocyclic compounds (pyrrolidone) are obtained from Z enaminoesters in three steps: hydrogenation followed by methylation and cyclisation in alkaline medium.
将甘
氨酸
乙酯(
伯胺)和N-乙基
氨基
丙酸乙酯(仲胺)加到3-F-烷基
丙酸乙酯中可分别得到Z和E构型的烯胺酯。
杂环化合物(
吡咯烷酮)可通过三个步骤从Z烯脂酸酯中获得:氢化,然后甲基化,并在碱性介质中环化。