Process for producing polythiobisphenols and process for produci

Details Process for producing polythiobisphenols and process for produci Process for producing polythiobisphenols and process for produci

1986-03-24

1988-04-26

Ceperley, Mary E.

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

Organic compounds

Sulfur containing

568 23, C07C14936, C07C14802

Patent

active

047405783

ABSTRACT:
A process for producing polythiobisphenols which comprises: reacting a phenol having the general formula ##STR1## wherein each R independently represents a hydrogen, a halogen or an alkyl, with sulfur monochloride in a polar organic solvent in the presence of a nitrogen-containing organic compound as a catalyst which is selected from the group consisting of tertiary amines, quaternary ammoniums, alkylated acid amides and heteroaromatic compounds, in amounts of about 1-30% by weight based on the amount of the phenol used. As a catalyst, bromine or an alkali metal halide is also usable.
A novel process for producing mercaptophenols by the hydrogenolysis of polythiobisphenols in the presence of a nickel catalyst is also disclosed. Raney nickel catalyst which is in advance poisoned with an organosulfur compound in which the sulfur atom has unshared electron pairs is especially effective as a catalyst.

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E. Hotelling et al, J. Org. Chem., 24, 1598 (1959).
Hackh's Chemical Dictionary, fourth ed., p. 571 (1969), QDSH3.

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