Iridium-Catalyzed C–H Amination of Weinreb Amides: A Facile Pathway toward Anilines and Quinazolin-2,4-diones
作者:Xunqing Dong、Panpan Ma、Tao Zhang、Hitesh B. Jalani、Guigen Li、Hongjian Lu
DOI:10.1021/acs.joc.0c01789
日期:2020.10.16
C–H amination of arenes directed by weakly coordinating Weinreb amides has been achieved with an iridium catalyst and 2,2,2-trichloroethoxycarbonyl (Troc) azide as an aminating agent, providing a robust method of producing synthetic useful ortho-TrocNH aryl Weinreb amides. Taking advantage of the reactivity of Weinreb amide and Troc groups in the amination products, selective hydrolysis was achieved
用铱催化剂和2,2,2-三氯乙氧羰基(Troc)叠氮化物作为胺化剂,可以实现弱配位的Weinreb酰胺对芳烃的CH氨基化反应,为生产合成有用的邻-TrocNH芳基Weinreb酰胺提供了一种可靠的方法。利用Weinreb酰胺和Troc基团在胺化产物中的反应性,选择性水解作为合成邻-NH 2芳基Weinreb酰胺的有吸引力的方法得以实现,这是可用于合成生物活性化合物的结构单元,以及伯胺的级联氨基环化是成功的,并为构建喹唑啉-2,4-二酮提供了有效的途径,喹唑啉-2,4-二酮存在于各种生物碱和天然产物中。