Consecutive Alkynylation–Michael Addition–Cyclocondensation (AMAC) Multicomponent Syntheses of α-Pyrones and α-Pyridones
作者:Thomas Müller、Natascha Breuer
DOI:10.1055/s-0037-1610129
日期:2018.7
Abstract A novel consecutive three-component synthesis of α-pyrones is based upon an alkynylation–Michael addition–cyclocondensation (AMAC) sequence, starting from (hetero)aroyl chloride and terminal alkyne to furnish the alkynone which reacts with malonates to give the α-pyrones in moderate to very good yields. By concatenating ammonolysis of the α-pyrones, an alkynylation–Michael addition–cyclocon
摘要 一种新颖的连续三组分合成α-吡喃酮的方法是基于炔基化-迈克尔加成-环缩合(AMAC)序列,从(杂)芳酰氯和末端炔烃开始,提供炔基,与丙二酸酯反应生成α-吡喃酮。中等至非常高的产量。通过串联α-吡喃酮的氨解,可以构想α-吡啶酮的炔基化-迈克尔加成-环缩合-氨解(AMACA)合成。具有和不具有酯官能度的α-吡啶酮产物以中等收率获得。 一种新颖的连续三组分合成α-吡喃酮的方法是基于炔基化-迈克尔加成-环缩合(AMAC)序列,从(杂)芳酰氯和末端炔烃开始,提供炔基,与丙二酸酯反应生成α-吡喃酮。中等至非常高的产量。通过串联α-吡喃酮的氨解,可以构想α-吡啶酮的炔基化-迈克尔加成-环缩合-氨解(AMACA)合成。具有和不具有酯官能度的α-吡啶酮产物以中等收率获得。