The effect of processing parameters on the synthesis of a series of bisphenols in the presence of an HCl:H2S catalyst was studied. It was shown that the reaction was highly selective at a 1:10 ketone:phenol mole ratio. The reaction rate was strongly affected by the amount of catalyst up to a 1:0.25 ketone:HCl mole ratio whereas the required amount of promoter (H2S) was <0.15 mol/mol of ketone. The optimum synthesis temperature fell in the range 30-50°C and depended on the structure of the synthesized bisphenol. A series of bisphenols based on various phenols and ketones were synthesized under the selected optimum conditions.
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The work was performed in the Russian Scientific Center Applied Chemistry and was financed by the Russian Ministry of Education and Science for applied research (project) under contract No. 14.579.21.0002 of July 6, 2014, with unique identifier of applied research (project) RFMEF157914X0002.
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Translated from Khimicheskie Volokna, No. 1, pp. 9-14, January—February, 2015.
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Bal’tser, A.E., Zaitsev, D.A., Zubritskaya, N.G. et al. Effect of Processing Parameters on the Synthesis of Bisphenols, Monomers for Producing Polyester Polymers and Fibres. Fibre Chem 47, 8–13 (2015). https://doi.org/10.1007/s10692-015-9630-0
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DOI: https://doi.org/10.1007/s10692-015-9630-0