Hydrogen Sulfide → HCID 54295110, compound

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Reaction Steps

A sodium methylate solution is freshly prepared from 0.3 g of sodium and 5 ml of methanol. 10 g of 2-nonenoic acid methyl ester are added to this solution and the mixture is cooled to -70°. After reaching this temperature, 20 ml of hydrogen sulphide are condensed in and the whole batch is transferred into a pre-cooled autoclave. The pressure-vessel is sealed and immediately heated at 50° in an oil-bath for 3 hours. The autoclave is subsequently cooled to room temperature, the excess hydrogen sulphide vented off and the reaction mixture washed with saturated common salt solution and dried. There are obtained 12.4 g of crude product which, after distillation, yields 5.7 g of pure 3-mercaptononanoic acid methyl ester of boiling point 70°/0.2 mm Hg, nD20 1.4602.

Provenance & Evidence