Process for producing alkylene sulfide

Details Process for producing alkylene sulfide Process for producing alkylene sulfide

1995-11-22

1998-06-09

Lambkin, Deborah C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D33102

Patent

active

057636206

ABSTRACT:
A process for producing an alkylene sulfide, which comprises the step of subjecting a mercaptoalkanol to an intramolecular dehydration reaction in the presence of an acidic dehydration catalyst, to produce the alkylene sulfide, in which the intramolecular dehydration reaction is conducted under at least one conditions of (1) to (3). (1) The intramolecular dehydration reaction is conducted in at least one solvent selected from the group consisting of compounds having an amide group N-substituted with a hydrocarbon group having from 1 to 6 carbon atoms, compounds having an unsubstituted amide group, compounds having a ureylene group N-substituted with a hydrocarbon group having from 1 to 6 carbon atoms, and compounds having an unsubstituted ureylene group. (2) The intramolecular dehydration reaction is conducted in a solvent under such temperature and pressure conditions that the reaction temperature T (.degree.C.) and the boiling point tb (.degree.C.) of the solvent at the reaction pressure satisfy equation (tb-30).ltoreq.T.ltoreq.tb. (3) The intramolecular dehydration reaction is conducted in a solvent in the presence of a hydrocarbon having a boiling point at ordinary pressure of from 30.degree. C. to 180.degree. C. When the hydrocarbon has from 6 to 9 carbon atoms, the above-described effects are enhanced further. When the concentration of the hydrocarbon in the reaction mixture is maintained in the range of from 0.1 to 10% by weight, the above-described effects are enhanced even more.

REFERENCES:
patent: 2185660 (1940-01-01), Coltof et al.
patent: 3417099 (1968-12-01), Lautenschlaeger
patent: 3467671 (1969-09-01), Sloar
patent: 3557145 (1971-01-01), McFadden
patent: 3567820 (1971-03-01), Searles et al.
patent: 3622597 (1971-11-01), Fletcher
patent: 3687976 (1972-08-01), Wright
patent: 3726840 (1973-04-01), Gmilter et al.
patent: 3822288 (1974-07-01), Labat
patent: 5304656 (1994-04-01), Yano et al.

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