Reference

Synthesis of the herbicide 3-amino-2,5-dichlorobenzoic acid

Synthesis of the herbicide 3-amino-2,5-dichlorobenzoic acid. Wang, Yuanzheng (Dep. Chem., Tongj. Univ., Shanghai, Peop. Rep. China). Huaxue Shijie, 27(9), 399-401 (Chinese) 1986. CODEN: HUAKAB. ISSN: 0367-6358. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Section cross-reference(s): 5 A method for the synthesis of 3-amino-2,5-dichlorobenzoic acid is described. 2745-49-5 and 50-79-3 are cas registry numbers of chemicals which are used as reagents here. Initially, 1,4-dichlorobenzene was reacted with CH2O and HCl to form 1,4-dichloro-2-(chloromethyl)benzene. A subsequent oxidn. step produced 2,5-dichlorobenzoic acid. Nitration of 2,5-dichlorobenzoic acid produced 3-nitro-2,5-dichlorobenzoic acid. Finally, redn. with HCl at 90-100° produced the herbicide. .

Degradation of chlorobenzoic acids

Degradation of chlorobenzoic acids. Baggi, G. (Ist. Microbiol. Agrar.Chemicals with cas numbers 50-79-3 and 99-96-7 also play role. Tec., Univ. Milano, Milan, Italy). Ann. Microbiol. Enzimol., 35, 71-8 (Italian) 1985. CODEN: AMEZAB. ISSN: 0003-4649. DOCUMENT TYPE: Journal CA Section: 10 (Microbial Biochemistry) A strain of Flavobacterium capable of growth on 2-chlorobenzoic acid 2,5-dichlorobenzoic acids as the sole C and energy source was isolated from enrichment culture. During growth, stoichiometric amts. of chloride were released. Resting cells of the strain grown on benzoate were not induced to oxidize chlorobenzoic acids. Cell exts. of Flavobacterium grown on 2-chlorobenzoate oxidized 3- and 4-chlorocatechol by ortho fission, whereas pyrocatechase induced by growth on benzoate showed no activity on halogenated catechols. In cooxidn. expts. with resting cells in the presence of 3-chlorobenzoic acid, 4-chlorocatechol was isolated and identified. .