Orthogonal sp3 C1–H and N–H Bond Functionalization of 1,2,3,4-Tetrahydroisoquinolines via the Ugi Four-Component Reaction
作者:Gaofeng Feng、Ji-Min Yan、Qi-Fan Bai、Chang Xu
DOI:10.1055/s-0035-1562551
日期:——
equally to this work. Abstract A new protocol for orthogonal sp3 C1–H and N–H bond functionalization of 1,2,3,4-tetrahydroisoquinolines has been established via the Ugi four-component reaction with aldehydes, isonitriles, and carboxylic acids. It was revealed that only the N–H bond could be functionalized when the reaction was performed in acetonitrile at room temperature; however, when the reaction was
◊纪敏燕,齐,凡百同等贡献这项工作。 抽象的 通过Ugi与醛,异腈和羧酸的四组分反应,已建立了1,2,3,4-四氢异喹啉的正交sp 3 C 1 -H和N-H键官能化的新协议。结果表明,室温下在乙腈中进行反应时,只有N–H键可以被官能化。但是,当反应在80°C的甲苯中进行时,氧化还原中性sp 3 C 1实现了1,2,3,4-四氢异喹啉的-H键官能化。与羧酸在氧化还原中性胺α-官能化中作为促进剂的通常作用不同,本文所用的羧酸也是反应物。正交过程可与各种底物兼容,并且可以吸引人地访问结构多样的1,2,3,4-四氢异喹啉文库。 通过Ugi与醛,异腈和羧酸的四组分反应,已建立了1,2,3,4-四氢异喹啉的正交sp 3 C 1 -H和N-H键官能化的新协议。结果表明,室温下在乙腈中进行反应时,只有N–H键可以被官能化。但是,当反应在80°C的甲苯中进行时,氧化还原中性sp 3 C 1实现了1,2,3,