Preparation of α- and β-substituted alanine derivatives by α-amidoalkylation or Michael addition reactions under heterogeneous catalysis assisted by microwave irradiation
作者:Antonio de la Hoz、Angel Dı́az-Ortiz、Marı́a Victoria Gómez、José Antonio Mayoral、Andrés Moreno、Ana Marı́a Sánchez-Migallón、Ester Vázquez
DOI:10.1016/s0040-4020(01)00461-6
日期:2001.6
Silica-supported Lewis acids are useful catalysts in conjunction with microwave irradiation for the synthesis of a range of alanine derivatives. Reaction of methyl α-acetamidoacrylate (1) with different heterocycles, such as furan (2), pyrrole (3), N-benzylpyrrole (4), indole (5) and pyrazole (6) and the carbocycle 1,3,5-trihydroxybenzene (7), led to several α-amino acid precursors.
二氧化硅负载的路易斯酸与微波辐射一起用于合成一系列丙氨酸衍生物是有用的催化剂。α-乙酰氨基丙烯酸甲酯(1)与不同的杂环,例如呋喃(2),吡咯(3),N-苄基吡咯(4),吲哚(5)和吡唑(6)和1,3,5-碳环的反应三羟基苯(7)生成了几种α-氨基酸前体。