Process for the preparation of sulphonic acid chlorides

Details Process for the preparation of sulphonic acid chlorides Process for the preparation of sulphonic acid chlorides

1980-05-05

1982-02-09

Killos, Paul J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C14326

Patent

active

043149502

ABSTRACT:
An improvement in a process for the preparation of a sulphonic acid chloride of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently hydrogen, a lower alkyl radical or a cycloalkyl radical, halogen, aryl, aralkyl, aryl ether or a radical --SO.sub.2 Cl, --SO.sub.2 -aryl ##STR2## or wherein adjacent radicals R.sup.1 and R.sup.2 are linked to form a cycloaliphatic, aromatic or hetero-aromatic ring which is optionally substituted by a sulphonic acid chloride group wherein an aromatic compound of the formula ##STR3## wherein R.sup.1, R.sup.2 and R.sup.3 have the above-identified meanings is reacted initially with chlorosulphonic acid and thereafter the reaction product is reacted with phosgene in the presence of a catalyst.

REFERENCES:
patent: 3706794 (1972-12-01), Horner
patent: 4105692 (1978-08-01), Blank et al.
patent: 4215071 (1980-07-01), Blank et al.

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