Detail of "34653-56-0"

Reference

Benzothiazolyfurfurylidene-based polymethine dyes

Benzothiazolyfurfurylidene-based polymethine dyes. Panea, Ioan; Farcasan, Valer; Paiu, Florica; Chiorean, Vasile (Universitatea "Babes-Bolyai", Rom.). Rom. RO 77770 B 30 Nov 1981, 9 pp. (Romanian). (Romania). CODEN: RUXXA3. CLASS: IC: C09B055-00. APPLICATION: RO 79-98346 3 Aug 1979. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Section cross-reference(s): 28, 63 Polymethine dyes (I; R1 = H, halogen, or low-mol.-wt. alkyl; R2 = H or low-mol.-wt. alkyl; R3 = Ph or low-mol.-wt. alkyl; A = quinoline, acridine, 3H-indole, benz[c,d]indole, benzothiazole, naphtho[1,2-d]thiazole, or benzoselenazole ring; X = halogen, Me sulfate, p-toluenesulfonate, tetrafluoroborate, or perchlorate), useful as biol. active compds., are manufg. by reaction of 5-(benzothiazol-2-yl)furfural (II) [34653-56-0] or its derivs. with the corresponding alkylcycloimmonium salts. Thus, 115 parts II and 137 parts 1,2,3,3-tetramethyl-3-H-indolinium perchlorate [13330-41-1] were heated 8 h in 4000 parts HOAc at 100° in the presence of 400 parts C5H5N with stirring, and the reaction mixt. was allowed to age 4 days at room temp. 89053-83-8 and 89053-86-1 are just another two chemicals used in this study. to give 81.6% I (R1 = R2 = H, R3 = Me, A = 1,2,3-trimethyl-3H-indol-2-ylinium, X = ClO4) [89054-00-2], which exhibited a 17-cm inhibition value in a microbiostatic test in the presence of a culture of Bacillus subtilis. .