495-54-5Relevant articles and documents
Compound as well as preparation method and application thereof to dye
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Paragraph 0050; 0054; 0055, (2018/07/30)
The invention relates to the field of dyes and in particular relates to a compound as well as a preparation method and application thereof to a dye. The molecular structural formula of the compound isshown in the specification, in the formula, wherein R1 is selected from any one of hydrogen, methyl, C1-C4 alkoxy, methoxyethoxy, and ethyloxyethoxy; R2 is selected from any one of hydrogen, methyl,chlorine and acetamido; R3 is selected from any one of hydrogen, methyl and chlorine; R4 is selected from any one of hydrogen, methoxy and chlorine; R5 and R6 are both selected from amino or a formulashown in the specification; R5 and R6 are different. The compound provided by the invention comprises double fluorescent groups of azo and diphenylamine dyes, and thus the compound has very good dyeing capability; a disperse dye made of the compound is bright in color, excellent in fastness, good in performance and good in alkali resistance, is applicable to different dyeing processes, is an environment-friendly dye, and is wide in application range and very good in development prospect.
SYNTHESIS OF SOME 2-ARYL-6-AMINO-2,3-DIHYDRO-1,2,4-BENZOTRIAZIN-3-ONES
Slouka, Jan,Bekarek, Vojtech
, p. 1379 - 1387 (2007/10/02)
Acylation of 2,4-diaminoazobenzene and its derivatives Ia-Ih with ethyl chloroformate gives high yields of the corresponding 2,4-bis(ethoxycarbonylamino)azobenzenes IIa-IIh which, on boiling in acid medium, are cyclized with simultaneous splitting off the second ethoxycarbonyl group to give the mesomeric 6-amino-2-aryl-3-oxo-2,3-dihydro-1,2,4-benzotriazinium cations IIIa-IIIh; the latter have been transformed into free bases IVa-IVh or their tautomers Va-Vh.Constitution of the prepared compounds has been studied by IR spectroscopy.Influence of medium on valence vibrations of the carbamate NH groups in the compounds II has also been studied.