反应详情

8 g (0.058 mol) of phenethylmercaptan are added with intensive stirring to a suspension of 12 g (0.058 mol) of N-ethylthiophthalimide in 70 ml of benzene. After a few minutes, a homogeneous solution forms and the phthalimide slowly begins to precipitate out therefrom. After stirring for 48 hours at room temperature, the mixture is filtered through a paper filter, the filtrate is concentrated in a vacuum and the crude 2-phenylethyl-ethyl-disulphide (12.8 g) obtained is distilled through a Vigreux column. There are thus obtained 10.5 g of pure product (91% of theory) which has a purity of 99% (gas-chromatographic estimation). Boiling point 87-88 mm Hg/0.04 mm Hg; nD20 = 1.5742. IR (liquid): bands inter alia at 3020, 1610, 1505, 1460, 1260, 710 cm-1.

1. waitAfter a few minutes
2. customto precipitate out
3. filtrationthe mixture is filtered through a paper
4. filtrationfilter
5. concentrationthe filtrate is concentrated in a vacuum