Versatile synthesis of malonamic acid derivatives from a β-ketothioester
作者:Pilar López-Alvarado、Carmen Avendaño、J Carlos Menéndez
DOI:10.1016/s0040-4039(01)00760-2
日期:2001.7
An efficient syntheticroute 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