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Title: Disperse Dyes: Part XIX-Synthesis of Disperse Azo Dyes from 2-Amino-8Hpyrazolo (4,5-g) benzothiazole and Their Dyeing Properties
Authors: Patil, A R
Sunthankar, S V
Issue Date: Mar-1980
Publisher: NISCAIR-CSIR, India
Abstract: 2-Amino-8H-pyrazolo (4,5 -g) benzothiazole has been synthesized in high yield (90%) by the action of ammonium thiocyanate and bromine in glacial acetic acid on 6-aminoindazole. An angular structure, based on NMR and mass spectral data, has been assigned to the resulting heterocyclic amine. The amine was diazotized in phosphoric acid (87%) and coupled with various coupling components in acetic acid-ethanol cosolvent. The dyeing properties of the dyes obtained have been studied.
Page(s): 13-15
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Appears in Collections:IJFTR Vol.05(1) [March 1980]

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