Misal, Balu; Palav, Amey; Ganwir, Prerna; Chaturbhuj, Ganesh published their research in Tetrahedron Letters in 2021. The article was titled 《Sulfated polyborate-H2O assisted tunable activation of N-iodosuccinimide for expeditious mono and diiodination of arenes》.Reference of 4-Chloro-2-iodoaniline The article contains the following contents:
Owing to both Lewis and Bronsted acid active sites on sulfated polyborate under homogeneous conditions, iodination protocol of arenes was developed, which can meet the requirement of regioselectivity and higher yield. The sulfated polyborate activated N-iodosuccinimide for mono iodination of highly activated substrates viz. phenols, anilines under anhydrous condition. Water tuned sulfated polyborate to generate more Bronsted acid sites resulting in rapid activation of NIS for diiodination. The protocol was equally applicable to diiodination of 4-hydroxyphenylacetic acid to synthesize 4-hydroxy-3,5-diiodophenylacetic acid, an intermediate of tiratricol, a thyroid treatment drug. This protocol was further integrated via one-pot sequential iodination and Sonogashira coupling to synthesize aryl acetylenes, building blocks for the synthesis of a variety of specialty chems., API and natural products. After reading the article, we found that the author used 4-Chloro-2-iodoaniline(cas: 63069-48-7Reference of 4-Chloro-2-iodoaniline)
4-Chloro-2-iodoaniline(cas: 63069-48-7) belongs to anime. Halogenation, in which one or more hydrogen atoms of an amine is replaced by a halogen atom, occurs with chlorine, bromine, and iodine, as well as with some other reagents, notably hypochlorous acid (HClO). With primary amines the reaction proceeds in two stages, producing N-chloro- and N,N-dichloro-amines, RNHCl and RNCl2, respectively. With tertiary amines, an alkyl group may be displaced by a halogen.Reference of 4-Chloro-2-iodoaniline
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com