Process for preparing alkylene sulfides

Details Process for preparing alkylene sulfides Process for preparing alkylene sulfides

1992-11-23

1994-04-19

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D33102

Patent

active

053046560

ABSTRACT:
In a process for preparing alkylene sulfides through the intramolecular dehydration reaction of mercaptoalkanols in a gaseous phase, catalysts are used, which are represented by the formula: M.sub.a X.sub.b Y.sub.c O.sub.d, where M represents at least one element selected from the group of alkali metals, alkaline earth metals and thallium; X represents at least one element selected from the group of Al, B, Si and P; Y represents at least one element selected from the group consisting of lanthanides, IIIA group, IVA group, VA group, IIIB group, IVB group, VB group and VIB group, excluding an element contained in M or X; O represents oxygen; and a and b are numerical values not equal to 0; b=0.2-100 and c=0-50 when a=1; and d is a numerical value determined according to a, b and c.

REFERENCES:
patent: 3622597 (1971-11-01), Fletcher
patent: 3687976 (1972-08-01), Wright
"Cyclodehydration of 2-Mercaptoalkanols as a Route to Episulphides", J. Chem. Soc. (C), 1969, pp. 1252 to 1256.

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