Preparation of dialkyl dithiodialkanoates

Details Preparation of dialkyl dithiodialkanoates Preparation of dialkyl dithiodialkanoates

1978-09-19

1980-10-21

Garner, Vivian

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

Organic compounds

Carboxylic acid esters

568907, C07C14800, C07C14920

Patent

active

042295882

ABSTRACT:
A method for obtaining dialkyl dithiodialkanoates in which mercaptoalkyl esters are contacted with a halogen in an inert hydrocarbon solvent to produce a heavy liquid phase of dialkyl dithiodialkanoate and a separate liquid phase of hydrocarbon solvent. These phases are easily separated into the product dialkyl dithiodialkanoate and hydrocarbon solvent which can be recycled without further treatment. In an embodiment of the invention the dialkyl dithiodialkanoate is further contacted with alkylene oxide to neutralize residual acidic by-products in the reaction mixture.

REFERENCES:
patent: 2375083 (1945-05-01), Cooper
patent: 2530882 (1950-11-01), Jansen et al.
patent: 2560421 (1951-07-01), Eby
patent: 2691000 (1954-10-01), Elliott
patent: 3005853 (1961-10-01), Wilgus et al.
patent: 3185620 (1965-05-01), Goodhue et al.
patent: 4052440 (1977-10-01), Gladstone

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