作者:Pilar López-Alvarado、Carmen Avendaño、J Carlos Menéndez
DOI:10.1016/s0040-4039(01)00760-2
日期:2001.7
An efficient synthetic route is described that allows the preparation under mild conditions of several types of malonamic acid derivatives. The S-tert-butyl acetothioacetate monoanion reacted with aryl or alkyl isocyanates to give β-amidothioesters in one step and 73–87% yield, after spontaneous deacetylation of tricarbonyl intermediates. Treatment of these thioesters with several aliphatic or aromatic
描述了一种有效的合成路线,该路线允许在温和条件下制备几种类型的丙二酸衍生物。该小号-叔丁基acetothioacetate单价阴离子与芳基或反应异氰酸烷基酯,得到β-amidothioesters在一个步骤和73-87%的产率,三羰基中间体的脱乙酰自发后。在室温下于THF或DME中,在三氟乙酸银的存在下,用几种脂族或芳族醇和胺处理这些硫酯,分别提供了相应的丙二酸酯和丙二酰胺,收率为80-100%。