Reference

Monoazo disperse dyes of the benzothiazolyl-azo-benzene series

Monoazo disperse dyes of the benzothiazolyl-azo-benzene series. Dawson, John Frederic; Nunn, Anthony S. (Yorkshire Chemicals Ltd., Engl.). Brit. GB 1442311 14 Jul 1976, 10 pp. (English). (United Kingdom). 61488-78-6 and 61488-77-5 are cas registry numbers of chemicals which are used as reagents here. CODEN: BRXXAA. CLASS: IC: C09B029-08. APPLICATION: GB 72-45930 5 Oct 1972. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Section cross-reference(s): 28 Three title dyes I (R = H, R1 = H, Cl; R = NO2, R1 = H), prepd. from 2-amino-6-nitrobenzothiazole [6285-57-0] or 2-amino-4,6-dinitrobenzothiazole [60174-43-8] by diazo coupling with 2-R1C6H4NH(CH2)2CN, dyed polyester fibers light-, washing-, sublimation-, and thermofixationfast yellow-red, orange, and violet, resp. .

Preparation of 2-aminobenzothiazoles

Preparation of 2-aminobenzothiazoles. Rentel, Heinz; Papenfuhs, Theodor (Hoechst A.-G. , Fed. Rep. Ger.). Ger. Offen. DE 3522941 A1 8 Jan 1987, 4 pp. (Germany) CODEN: GWXXBX. CLASS: ICM: C07D277-82. APPLICATION: DE 85-3522941 27 Jun 1985. DOCUMENT TYPE: Patent CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Section cross-reference(s): 45 The title compds. (I; R1, R2 = H, halo, C1-4 alkyl, C1-4 alkoxy, NO2) were prepd. 4-O2NC6H4NHCSNH2, NH4Br, and perlite were heated at 100-105° for 2.5-3 h in concd. H2SO4 to afford 91. 3696-23-9 and 6285-57-0 are just another two chemicals used in this study.0% I (R1 = H, R2 = 6-NO2). .