Pd(OAc)2-catalyzed one-pot preparation of anthranilates from acyclic unsaturated β-enamino esters
作者:Shunya Mikami、Sho Okada、Ryo Kishimoto、Tetsuhiko Takabatake、Masahiro Toyota
DOI:10.1016/j.tetlet.2020.151659
日期:2020.3
A one-pot synthesis of anthranilates from acyclic unsaturated β-enamino esters with a catalytic amount of Pd(OAc)2 was achieved for the first time. The substrates for the key catalytic reaction were easily prepared from acetoacetate esters and amines, and functionalized anthranilates were obtained in moderate to good chemical yields. A simple assembly of a 13C-labeled anthranilate was demonstrated
首次实现了由无环不饱和β-烯胺酸酯与催化量的Pd(OAc)2的一锅法合成邻氨基苯甲酸酯。关键催化反应的底物易于从乙酰乙酸酯和胺中制备,并以中等至良好的化学收率获得官能化的邻氨基苯甲酸酯。通过应用此协议演示了13 C标记的邻氨基苯甲酸的简单组装。另外,使用该催化方法合成了生物活性NNI-5。