Dimethyl Disulfide → [2-(4-Methyl-5-thiazolyl)ethyl]-methyl-disulphide

Participants

Reaction Steps

A mixture of 8.26 g (0.052 mol) of 2-(4-methyl-5-thiazolyl)-ethyl-mercaptan and 33.07 g (0.208 mol) of dimethyldisulphide is treated with 50 mg of sodium hydride (50% dispersion in oil) and the mixture is heated to reflux for 4 hours. The mixture is then left to cool, filtered over 10 g of aluminum oxide (activity I, neutral), which is back-washed with ether, and concentrated in a vacuum. The resulting crude product (9.5 g) is distilled through a Hempel column under a high vacuum, there being obtained 6.45 g of [2-(4-methyl-5-thiazolyl)ethyl]-methyl-disulphide. Boiling point 104°-110°/0.02 mm Hg; nD20 =1.5944; purity: 99%.

Provenance & Evidence