Site-Selective C-H Amidation of 2-Aryl Quinazolinones Using Nitrene Surrogates was written by Kim, Saegun;Jeoung, Daeun;Kim, Kunyoung;Lee, Seok Beom;Lee, Suk Hun;Park, Min Seo;Ghosh, Prithwish;Mishra, Neeraj Kumar;Hong, Suckchang;Kim, In Su. And the article was included in European Journal of Organic Chemistry in 2020.Safety of 6-Chloro-2-aminobenzamide This article mentions the following:
The site-selective modifications of quinazolinones constitute a pivotal topic in drug discovery and material science. Herein, we describe the rhodium(III)-catalyzed C-H amidation of 2-aryl quinazolin-4(3H)-ones with a range of nitrene surrogates including dioxazolones, organic azides, and N-methoxyamides. Complete site-selectivity and functional group tolerance are observed Notably, the large-scale reaction and late-stage functionalization highlight the synthetic potential of the developed protocol. Combined mechanistic investigations elucidate a plausible reaction mechanism of this process. In the experiment, the researchers used many compounds, for example, 6-Chloro-2-aminobenzamide (cas: 54166-95-9Safety of 6-Chloro-2-aminobenzamide).
6-Chloro-2-aminobenzamide (cas: 54166-95-9) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds. Tertiary amides, with the important exception of N,N-dimethylformamide, exhibit low solubility in water. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Safety of 6-Chloro-2-aminobenzamide
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics