Detail of "7286-84-2"

Reference

Preparation of 3-amino-2,5-dichlorobenzoic acid and derivatives thereof

Preparation of 3-amino-2,5-dichlorobenzoic acid and derivatives thereof. Seres, Jeno; Pfliegel, Todor; Gajary, Antal; Nagy, Lajos T. (Chinoin Gyogyszer es Vegyeszeti Termekek Gyara RT., Hung.). Brit. GB 1453405 20 Oct 1976, 4 pp. (English). (United Kingdom). CODEN: BRXXAA. CLASS: IC: C07C099-00. PRIORITY: HU 74-1464 22 Mar 1974. DOCUMENT TYPE: Patent CA Section: 25 (Noncondensed Aromatic Compounds) Section cross-reference(s): 5 3-Amino-2,5-dichlorobenzoic acid (I) and its alkyl esters or salts were prepd. by redn. of Me or Et 3-nitro-2,5-dichlorobenzoate optionally followed by hydrolysis. 56961-51-4 and 7286-84-2 are cas registry numbers of chemicals which are used as reagents here. Thus, NaCl 6, NaOH 12.5, Na dithionite 25.5, and Me 3-nitro-2,5-dichlorobenzoate 12.5 g were stirred 5 hr at room temp. in 150 ml H2O and the mixt. was acidified to pH 3 with concd. HCl, pptg. 6.3 g I. .