Singlet oxygen mediated one pot synthesis of N-pyridinylamides via oxidative amidation of aryl alkyl ketones
作者:Firdoos Ahmad Sofi、Rohit Sharma、S.N. Kavyasree、Sumi Aisha Salim、Pravin J. Wanjari、Prasad V. Bharatam
DOI:10.1016/j.tet.2019.130536
日期:2019.10
An environmental friendly, efficient protocol has been realized for the synthesis of N-pyridinylamides via copper catalyzed oxidative amidation of arylalkylketones with 2-aminopyridines. This one pot protocol involves chemo selective cleavage of C (O)–C bond in the presence of singlet oxygen. The reaction conditions are simple, tolerates wide range of substrates and the products were formed in good
Copper(I)-catalysed aerobic oxidative selective cleavage of C C bond with DMAP: Facile access to N-substituted benzamides
作者:Haojie Ma、Guoqiang Lu、Bo Han、Guosheng Huang、Yuqi Zhang、Ji-Jiang Wang
DOI:10.1016/j.tetlet.2021.153199
日期:2021.7
cleavage of C(CO)–C(alkyl) bond to generate N-substitutedbenzamides has been developed in the presence of copper(I) chloride. The usage of inexpensive copper catalyst, broad substrate scope, mild conditions make this protocol very practical. More importantly, this reaction provides an alternative approach for the construction of useful N-substitutedbenzamides.
The simple and inexpensive N,N-dimethylcyclohexane-1,2-diamine/CuI catalytic system provides a versatile, easy and efficient access to an array of N-(2-pyridin-2-yl)-amides from 2-chloro-pyridine derivatives.