Process for the preparation of acyloxybenzenesulfonates
AssigneeClariant GmbH
InventorsGerd Reinhardt, Peter Naumann, Miriam Ladwig, Ina Golla, Torsten Pilz, Reto Wieduwilt, Henri Jourdan
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Abstract
Process for the preparation of acyloxybenzenesulfonates by reaction of phenolsulfonate with a water content of less than 0.5% by weight and alkanecarbonyl halide in a hydrocarbon as solvent and in the presence of a catalyst in the form of a basic nitrogen-containing compound.
Claims13
A process for the preparation of acyloxybenzene-sulfonates comprising reacting a phenolsulfonate having a water content of less than 0.5% by weight of water and an alkanecarboxylic acid derivative in an aliphatic or aromatic hydrocarbon media in the presence of from 0.01 to 10% by weight of a catalyst based on the phenolsulfonate, catalyst comprising a carboxamide compound.
A process for preparing acyloxybenzenesulfonates comprising reacting a phenolsulfonate having a water content of less than 0.5% by weight of water and an alkanecarboxylic acid derivative in an aliphatic or aromatic hydrocarbon media in the presence of from 0.01 to 10% by weight of a catalyst based on the weight of phenolsulfonate, wherein the catalyst is selected from the group consisting of N-methylpyrrolidone, N-ethylpyrrolidone, N-butylpyrrolidone, N-octylpyrrolidone, N-methylcaprolactam, N-octylcaprolactam, and mixtures thereof.
A process for the preparation of acyloxybenzene-sulfonates comprising:
- a) reacting a phenolsulfonate having a water content of less than 0.5% by weight and an alkanecarboxylic acid derivative in a slurry media comprising an aliphatic or aromatic hydrocarbon in the presence of from 0.01 to 10% by weight based on phenolsulfonate of a catalyst selected from the group consisting of N-methylpyrrolidone and N-octylpyrrolidone, and mixtures thereof;
- b) removing the acyloxybenzenesulfonates from a mother liquor comprising the catalyst and slurry media;
- and
- c) recovering the acyloxybenzenesulfonates.
Dependencies are inferred from the claim text.