Isocyanatoaryl sulphochlorides

Details Isocyanatoaryl sulphochlorides Isocyanatoaryl sulphochlorides

1979-12-21

1984-06-12

Ford, John M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260453A, 260543H, 260543R, C07C11804

Patent

active

044540710

ABSTRACT:
Isocyanatoaryl sulphochlorides corresponding to the following general formula: ##STR1## wherein R represents hydrogen, a sulphochloride group (SO.sub.2 Cl) or a sulphonic acid group (SO.sub.3 H),
are produced by reacting 2,4-diisocyanatotoluene, optionally as mixtures with up to 35% by weight of 2,6-diisocyanatotoluene, with from 0.2 to 2 mols, per mol of starting diisocyanate, of sulphur trioxide or chlorosulphonic acid and from 0.3 to 20 mols, per mol of starting diisocyanate, of an inorganic acid chloride, either successively or simultaneously, at a temperature of from 0.degree. to 160.degree. C. and hydrogen chloride being removed.

REFERENCES:
patent: 3139381 (1964-06-01), Novello
Kirk, Encyclopedia of Chem. Tech., vol. 9, p. 466.
Muth, Methoden zur Herstellung und Umwandlung aromat Sulfohalogenide, pp. 563-585.
Rohoff and Rose, Organic Chemistry, MacMillan Company, New York, 1966, p. 393.
March, Advanced Organic Chemistry, McGraw-Hill, New York, 1977, p. 361.

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