41480-04-0Relevant 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
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Paragraph 0011, (2018/05/16)
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.
Reactivity of sterically hindered aromatic sulfonic acid derivatives: VIII. * General mathematical model for catalytic sulfonylation of phenol
Rubleva,Maksimenko
, p. 1298 - 1300 (2007/10/03)
A general mathematical model is proposed for interpretation and prediction of the reactivity of sterically hindered arenesulfonyl chlorides in the catalytic sulfonylation of phenol. Some specific features of transition states in the catalytic and noncatal
REACTIVITY OF STERICALLY HINDERED DERIVATIVES OF AROMATIC SULFONIC ACIDS. III. EFFECT OF THE STRUCTURE OF ARENESULFONYL CHLORIDES ON THE KINETICS OF CATALYTIC SULFONYLATION OF PHENOL
Maksimenko, N. N.,Rubleva, L. I.
, p. 694 - 697 (2007/10/02)
The kinetics of the catalytic sulfonylation of phenol by benzenesulfonyl chlorides XArSO2Cl in benzene in the presence o
CATALYTIC SULFONYLATION OF PHENOL BY STERICALLY HINDERED SULFONYL CHLORIDES
Vizgert, R.V.,Maksimenko, N.N.,Rubleva, L.I.
, p. 2144 - 2146 (2007/10/02)
The sulfonylation of phenol by substituted arenesulfonyl chlorides XArSO2Cl in the presence of triethylamine in benzene was studied by potentiometric titration.A linear relation was obtained between the logaritmhs of the catalytic rate constants and the steric constants Eso of the substituents in the sulfonyl chloride.The contribution from the induction and steric effects of the substituents at position2 to the kinetics of the process was assessed.It was concluded that the steric effect plays a predominant role over the induction and resonance effects.
SULFONYLATION OF PHENOLS IN THE PRESENCE OF PYRIDINE BASES
Viggert, R. V.,Maksimenko, N. N.,Rubleva, L. I.,Derevyanko, S. V.
, p. 1295 - 1298 (2007/10/02)
The sulfonylation of phenols by aromatic sulfonyl chlorides in the presence of pyridine bases in nitrobenzene was studied by potentiometric titration.A linear dependence was found between the logarithms of the catalytic constants and the ?-Hammett constan
