A Three-Component Ugi-Type Reaction of <i>N</i>-Carbamoyl Imines Enables a Broad Scope Primary α-Amino 1,3,4-Oxadiazole Synthesis
作者:Daniel Matheau-Raven、Elizabeth Boulter、Tatiana Rogova、Darren J. Dixon
DOI:10.1021/acs.orglett.1c02945
日期:2021.11.5
A general synthesis of N-protected primary α-amino 1,3,4-oxadiazoles, from N-carbamoyl imines, N-isocyaniminotriphenylphosphorane (NIITP), and carboxylic acids, is described. Featuring an isocyanide addition reaction with N-carbamoyl imines, this efficient three-component Ugi-type reaction was found to be broad in scope with respect to imine, and carboxylic acid coupling partners. Furthermore, the
描述了由N-氨基甲酰基亚胺、N-异氰亚氨基三苯基正膦 (NIITP) 和羧酸合成N-保护的伯 α-氨基 1,3,4-恶二唑的一般方法。这种高效的三组分 Ugi 型反应具有与N-氨基甲酰基亚胺的异氰化物加成反应,被发现在亚胺和羧酸偶联伙伴方面的范围很广。此外,该方法的多功能性通过 α-氨基 1,2,4-三唑合成、七种药物分子的后期功能化以及初级 α-氨基 1,3,4-恶二唑的五种不同衍生化得到证明。