13653-18-4

Usage

InChI:InChI=1/C12H11NO3S/c13-10-5-4-8-12(9-10)17(14,15)16-11-6-2-1-3-7-11/h1-9H,13H2

Upstream product

• 98-09-9 benzenesulfonyl chloride 
• 591-27-5 m-Hydroxyaniline 
• 41480-04-0 phenyl 3-nitrobenzenesulfonate 
• 121-51-7 3-nitrobenzenesulphonyl chloride 
• 108-95-2 phenol 
• 36139-27-2 5-(3-Phenoxysulphenylazo)-6-hydroxy-3-cyano-1,4-dimethyl-2-pyridone 

Relevant academic research and scientific papers

Pyridine azo disperse dye containing sulfonic acid ester or sulfamine as well as synthesis method of pyridine azo disperse dye

The invention provides pyridine azo disperse dye containing sulfonic acid ester or sulfamine as well as a preparation method of pyridine azo disperse dye. The molecular structure of the compound is asshown in the following formula: (the formula is as shown in the description). The synthesis method comprises the following steps: taking 3-nitrobenzene sulfonyl chloride or 3-nitryl-4-substituted benzene sulfony chloride, alcohol, phenol or primary amine, 3-cyan-4-methyl-6-hydroxyl-2-pyrifone or 3-cyan-4-methyl-hydroxyl-N-alkyl-2-pyridone as raw materials, performing sulfonic acid esterificationor sulfonic amidation, performing nitro reduction and performing diazotization coupling to obtain a product. The product provided by the invention is novel in structure, simple in synthesis, low in cost and suitable for industrialized production.

THE POLAROGRAPHIC AND VOLTAMMETRIC DETERMINATION OF 5-(3-PHENOXYSULPHENYLAZO)-6-HYDROXY-3-CYANO-1,4-DIMETHYL-2-PYRIDONE

The polarographic reduction of the title azodye has been studied, a mechanism was proposed and optimal conditions were found for the determination of this substance by TAST polarography in the range 5E-5 - 2E-6 mol l-1 and differential pulse polarography at a dropping mercury electrode in the range 5E-5 - 2E-8 mol l-1.The sensitivity was further increased by adsorptive accumulation of the determined substance on the surface of a hanging mercury drop electrode with linear scan voltammetry (determination limit 5E-10 mol l-1 ).The selectivity was increased by priorseparation of the determined azodye using thin layer chromatography and by transferring the substance adsorbed on the surface of the hanging mercury drop to a new base electrolyte solution.

Process for the manufacture of aromatic sulphonic acid esters of aromatic amino-hydroxy compounds

A process for the manufacture of esters of aromatic sulphonic acids and aromatic aminohydroxy compounds, of the formula I comprising reacting an aromatic aminohydroxy compound of the formula II having a pKa value of from 8.5 to 10.1, with a sul