3-Amino-2,1-benzisothiazole. Synthesis of some chloro and trifluoromethyl derivatives was written by Gray, J.;Waring, D. R.. And the article was included in Journal of Heterocyclic Chemistry in 1980.Product Details of 53312-77-9 This article mentions the following:
7-Chloro-, 4,7-dichloro-, 5- and 7-(trifluoromethyl), 5-chloro-6-(trifluoromethyl)- and 5-chloro-7-(trifluoromethyl)-3-amino-2,1-benzisothiazoles were prepared Preparative details are included for a number of precursors to the benzisothiazoles which have not previously been described. Visible spectra of some azo dyes prepared from the title compounds with a selected coupler are discussed with reference to substituent effects. In the experiment, the researchers used many compounds, for example, 2-Amino-3-chlorobenzonitrile (cas: 53312-77-9Product Details of 53312-77-9).
2-Amino-3-chlorobenzonitrile (cas: 53312-77-9) belongs to nitriles. The electronic structure of nitriles is very similar to that of an alkyne with the main difference being the presence of a set of lone pair electrons on the nitrogen. In addition, Nitriles can react with alkynes, which leads to an increase in carbon chain length (carbocyanation).Product Details of 53312-77-9
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts