Method of making certain 2,3-dihydro-1,4-dithiins

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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549 20, 549 21, 549 22, C07D33502

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active

043190332

ABSTRACT:
A method of making certain 2,3-dihydro-1,4-dithiins of the following formula by the action of alpha-hydroxyketones (acyloins) of 1,2-dithiols: ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen or alkyl having 1 to 6 carbon atoms or are joined together to form a ring with 3 or 4 methylene groups, and R.sup.3 and R.sup.4 are hydrogen or the same or different alkyl groups having 1 to 10 carbon atoms, which alkyl groups may be substituted with lower alkoxy groups.

REFERENCES:
patent: 3920438 (1975-11-01), Brewer et al.
patent: 4004018 (1977-01-01), Brewer et al.

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