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US 4,067,910 AGranted
Process for making allylmercaptan
AssigneeGivaudan SA
InventorsGeorg Frater, Trudi Sigg-Grutter, Jost Wild
Life of this patent
Estimating the term…
Abstract
Certain allylmercaptans, some of which are novel, can be used to make novel flavorant and fragrance compositions. A novel method for making the allylmercaptans is disclosed.
Claims3
A process for the manufacture of allylmercaptans, which process comprises heating an allyl xanthogenate of the formula:
- ##STR45## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each independently represent a hydrogen atom or a lower alkyl, lower alkenyl, lower alkynyl, lower cycloalkyl or lower cycloalkenyl group which may carry an oxygen-containing substituent, or R.sup.2 and R.sup.3 or R.sup.2 and R.sup.4 or R.sup.3 and R.sup.4 can be joined together to form a ring, and Cat+ denotes the cation of a base selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, alcoholates, alkali metal hydrides, alkaline earth metal hydrides, metal alkyls and metal aryls,
- in an aqueous liquid medium to give a mixture of an allylmercaptan of the general formula ##STR46## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the significance given earlier in this claim, and an allylic rearrangement product thereof of the general formula ##STR47## wherein R.sup.1, R.sup.2 R.sup.3, R.sup.4 and R.sup.5 have the significance given earlier in this claim, the ratio of allyl xanthogenate to liquid being from about 1:10 to 1:50.
Dependencies are inferred from the claim text.