In 2022,Xie, Dandan; Hu, Xin; Ren, Xiaoli; Yang, Zaiping published an article in Frontiers in Chemistry (Lausanne, Switzerland). The title of the article was 《Synthesis and bioactivities of novel piperonylic acid derivatives containing a sulfonic acid ester moiety》.Formula: C6H4Cl2O2S The author mentioned the following in the article:
In order to develop efficient, broad-spectrum and structurally simple agricultural bactericide, the structure of piperonylic acid was modified and a series of novel piperonylic acid derivatives I [R = Ph, 2-naphthyl, benzyl, etc.] containing a sulfonic acid ester moiety was synthesized. Bioassay results indicated the compounds I exhibited significantly antibacterial activities. Among them, compound I [R = phenyl] exhibited excellent antibacterial activities against Pseudomonas syringae pv. Actinidiae (Psa), with inhibitory value 99 and 85% at 100μg/mL and 50μg/mL, resp., which was higher than that of thiodiazole-copper (84 and 77%) and bismerthiazol (96 and 78%). In addition, some compounds also showed moderate insecticidal activity against Spodoptera frugiperda. The above mentioned results confirm the broadening of the application of piperonylic acid, with reliable support for the development of novel agrochem. bactericide. The experimental process involved the reaction of 4-Chlorobenzenesulfonyl chloride(cas: 98-60-2Formula: C6H4Cl2O2S)
4-Chlorobenzenesulfonyl chloride(cas: 98-60-2) belongs to organochlorine compounds. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. Formula: C6H4Cl2O2S However, the extent of chlorination is difficult to control. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics