Sulfonation of aromatic compounds in the presence of solvents

Details Sulfonation of aromatic compounds in the presence of solvents Sulfonation of aromatic compounds in the presence of solvents

1973-10-30

1976-03-02

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260505C, 260505E, 260512R, 260512C, C07D33300, C07C14324

Patent

active

039418103

ABSTRACT:
A process for the sulfonation of aromatic compounds wherein an aromatic substance consisting of one or more aromatic compounds susceptible to the action of sulfur trioxide is formed into a reactant by admixture with one or more organic liquids, substantially inert to sulfur trioxide under the conditions of the process, which reactant is brought to boiling at a temperature not greater than 100.degree. C under a pressure of from 0.1 mm Hg to atmospheric pressure, gaseous sulfur trioxide is introduced thereinto thereby causing it to continue to boil, the component or components of the reactant thus volatilized is or are reconverted to liquid in a heat-exchanger and recycled to the reaction chamber, and the pressure in the reaction chamber and the rate at which the gaseous sulfur trioxide is introduced into the reactant are controlled so as to ensure that there is always present in the reaction chamber an amount of volatilizable matter exceeding that amount volatilizable by the heat of reaction of the aromatic substance present in the reaction chamber with the gaseous sulfur trioxide in contact with said aromatic substance and that the temperature of the reaction mixture is a temperature of 100.degree. C or below.

REFERENCES:
patent: 2616936 (1952-11-01), Mammen et al.
patent: 2704295 (1955-03-01), Gilbert et al.
patent: 2798089 (1957-07-01), Norwood et al.
patent: 2832801 (1958-04-01), Berstein
patent: 3232976 (1966-02-01), Lohr
patent: 3248413 (1966-04-01), Motl
patent: 3270038 (1966-08-01), Marshall et al.
patent: 3410895 (1968-11-01), Graf et al.

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