Process for the preparation of thianthrene compounds

Details Process for the preparation of thianthrene compounds Process for the preparation of thianthrene compounds

1977-08-05

1979-02-13

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D33908

Patent

active

041395166

ABSTRACT:
A process for the preparation of a thianthrene compound which comprises
A. adding sulfur monochloride to an excess of a selected benzene compound in the presence of aluminum chloride and reacting to form a thianthrene compound: aluminum chloride complex in the reaction medium;
B. treating the reaction medium with an alcohol to free the thianthrene compound from the complex and dissolve the aluminum chloride therein;
C. separating the thianthrene compound from the reaction medium;
Preferred benzene compounds include benzene and substituted benzene compounds, especially halobenzenes, alkylbenzenes, and the like having at least two adjacent ring positions unsubstituted.

REFERENCES:
patent: 3997560 (1976-12-01), Buckholtz et al.
patent: 4091031 (1978-05-01), Buckholtz et al.
Fieser et al., Adv. Org. Chem. (Reinhold, 1962), p. 19.
Morrison et al., Org. Chem. (Allyn & Bacon, 1974), pp. 32-35.
Gilman et al, J. Am. Chem. Soc. vol. 78, pp. 2163 to 2165 (1956).

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