series of 5-substituted morpholin-2-one-3-carbox-amide derivatives were efficiently synthesized by a Ugi three-component reaction involving chiral 5,6-dihydro[1,4]oxazin-2-one substrates, isocyanides and carboxylic acids. The newly formed chiral center in the product was obtained in good diastereoselectivity.
通过涉及手性 5,6-二氢[1,4]恶嗪-2-one 底物、异
氰化物和
羧酸的 Ugi 三组分反应有效合成了一系列 5-取代吗啉-2-one-3-羧酰胺衍
生物酸。产物中新形成的手性中心以良好的非对映选择性获得。