Detail of "13486-43-6"

CAS Number:
13486-43-6
Name:
Ethanol,2-[ethyl[4-[2-(6-methoxy-2-benzothiazolyl)diazenyl]phenyl]amino]-
Molecular Structure:
Formula:
C18H20 N4 O2 S
Molecular Weight:
356.442
Synonyms:
Ethanol,2-[N-ethyl-p-[(6-methoxy-2-benzothiazolyl)azo]anilino]- (8CI); Ethanol, 2-[ethyl[4-[(6-methoxy-2-benzothiazolyl)azo]phenyl]amino]-(9CI)
Density:
1.28g/cm³
Boiling Point:
554.1°Cat760mmHg
Flash Point:
288.9°C

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Benzothiazolium dyes: Benzothiazolium dyes. (Bayer A.-G., Ger.). Japan. Kokai JP 52142726 28 Nov 1977 Showa, 9 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09B043-00. PRIORITY: DE 76-2623162 22 May 1976. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) I (R, R1 = H, alkyl, alkenyl, cycloalkyl, aryl, aralkyl, RR1N = heterocycle, rings A and B optionally containing nondissocg. substutuents) were alkylated with R2SO3R3 (R2 = aryl, OR3, R3 = alkyl), and the alkylation was terminated by adding water. For example, 2-amino-6-methoxybenzothiazole?PhN(Et)CH2CH2OH [13486-43-6] in PhCl was treated with Me2SO4 [77-78-1] at 80° over 1 h, stirred at 80° for 1.5 h, treated with H2O-Me2SO4, and salted to give II [26850-47-5], reddish brown on acrylic-wool.

Quaternization of benzthiazole-azo compounds: Quaternization of benzthiazole-azo compounds. Illy, Hugo (Toms River Chemical Corp., USA). U.S. US 3991043 9 Nov 1976, 4 pp. (English).Some commonly used reagents like 13486-43-6 and 26850-47-5 are used in this experiment. (United States of America). CODEN: USXXAM. CLASS: IC: C09B043-00. NCL: 260158000. APPLICATION: US 68-760681 18 Sep 1968. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Cationic dyes (I, R = H, MeO; R1 = H, AcNH; R2 = Et or R3R2N = morpholino; R3 = CH2CH2OH, CH2CH2CN, 2-phthalimidoethyl were prepd. by quaternization of the free base or a wet cake by dropwise addn. of .apprx.4 moles Me2SO4 in an aq. soln. at a base to water ratio of 1:2-3 in the presence of NaHCO3 or MgO at approx. room temp. and salting. .