Synthesis of 1,8-, 1,6- and 3,6-dichloro-9H-thioxanthen-9-ones was written by Okabayashi, Ichizo;Fujiwara, Hidetoshi;Tanaka, Chika. And the article was included in Journal of Heterocyclic Chemistry in 1991.Product Details of 13420-63-8 This article mentions the following:
Cyclization of chlorinated (phenylthio)benzoic acid I gave a mixture of 1,8-(II) and 1,6-dichloro-9H-thioxanthen-9-ones (III). The mixture was converted to 1,8-diamino- and 1-amino-6-chloro-9H-thioxanthen-9-ones from which II and III were sep. prepared 3,6-Dichloro-9H-thioxanthen-9-one was similarly prepared In the experiment, the researchers used many compounds, for example, 2-Chloro-6-iodobenzoic acid (cas: 13420-63-8Product Details of 13420-63-8).
2-Chloro-6-iodobenzoic acid (cas: 13420-63-8) belongs to iodide derivatives. Organic iodides are widely used in organic synthesis. Halogenation of aromatic hydrocarbons is a very important reaction via an electrophilic aromatic substitution. A typical method for synthesis of aromatic iodides is diazotization of primary aromatic amines followed by treatment of potassium iodide. Aliphatic alcohols are converted to alkyl iodides by treating with hydrogen iodide.Product Details of 13420-63-8
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com