2-Chloroethanol → 2-[2-(2-Mercapto-ethoxy)-ethylsulfanyl]-ethanol

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

2-Mercaptoethyl ether (53.8 ml; 0.434 mol) was added to a solution of sodium hydroxide (17.36 g; 0.434 mol) in ethanol (300 ml) at ambient temperature and stirred for 15 min. 2-Chloroethanol (29.1 ml; 0.434 mol) was added to the solution at ambient temperature and after addition was complete the stirred solution was heated to 80° C. for 1 hr. The reaction mixture was then cooled to ambient temperature and the solid sodium chloride separated by filtration. The filtrate was transferred to a distillation apparatus and ethanol and unreacted 2-mercaptoethyl ether removed under vacuum (the latter distilling at 62° C. and 0.4 mbar). Fractional distillation of the remaining product yielded 2-[2-(2-mercapto-ethoxy)-ethylsulfanyl]-ethanol at 128° C. and 0.3 mbar. Pure fractions were combined to afford 2-[2-(2-mercapto-ethoxy)-ethylsulfanyl]-ethanol (31 g; 0.17 mol; 39% yield) as a colourless oil.

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