Preparation of bis(organothio) alkanes

Details Preparation of bis(organothio) alkanes Preparation of bis(organothio) alkanes

1992-02-19

1993-01-19

Cintins, Marianne M.

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

Organic compounds

Sulfur containing

C07C31918

Patent

active

051808528

ABSTRACT:
A bis(organothio) alkane, such as 1,2-bis(methylthio) hexane, is synthesized by reacting an alkene, such as 1-hexene, with an excess amount of a disulfide thiolating agent, such as dimethyl disulfide, in the presence of a catalytic amount of a catalyst, such as a boron trifluoride dialkyl etherate. The reaction can be carried out at from about 20.degree. to about 150.degree. C. and under a pressure of from about 0 to 20 atms. The bis(organothio) alkane is useful in ore flotation process as a flotation agent for ores containing metal sulfide minerals.

REFERENCES:
patent: 2125337 (1938-08-01), Gaudin et al.
patent: 3032593 (1962-05-01), Schneider
patent: 4681675 (1987-07-01), Bresson et al.
J. Org. Chem. 50:4390, by Caserio et al. (1985).

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