A Simple and Efficient Approach to Quinazolinones under Mild Copper-Catalyzed Conditions
作者:Xiaowei Liu、Hua Fu、Yuyang Jiang、Yufen Zhao
DOI:10.1002/anie.200804675
日期:2009.1.2
Cop somerings: A simple and highly efficient copper‐catalyzed method for the synthesis of quinazolinone derivatives through the reaction of substituted2‐halobenzoic acids with amidines or guanidines under mild conditions has been developed (see scheme). The method has economical and practical advantages.
Rh(III)-Catalyzed Controlled Ortho-Amidation of Arylamides with Dioxazolones Using Weakly Coordinating Native Primary Amide as the Directing Group
作者:Saksham Mishra、Anjali Aghi、Amit Kumar
DOI:10.1021/acs.joc.4c00116
日期:2024.4.19
Herein, we report a controlled introduction of an amide unit at the ortho-position of an electron-deficient arylamide system without affording any cyclized products using user-friendly dioxazolone as an amidating reagent in the presence of a Rh(III)-catalyst. This is the first report where nativeprimaryamide has been utilized as a weaklycoordinatinggroup for site-selective C–N bond formation reaction