Reaktion #213925

Reaktionsgleichung

acetic acid

sodium ethoxide

thiophenol

ethanol

ethanol

diethyl α-bromosuberate

ethanol

→

Diethyl α-Phenylthiosuberate

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturfinally is heated
2. 2
   Temperaturat reflux for 60 min
3. 3
   Einengenconcentrated
4. 4
   SonstigeThe residue is partitioned between ether and water
5. 5
   WaschenThe ether layer is washed with water and brine
6. 6
   Trocknendried over MgSO4
7. 7
   Einengenconcentrated
8. 8
   workup.DISTILLATIONThe residue is subjected to fractional distillation
9. 9
   Sonstigeto provide a light amber liquid, bp. 165°-180° (0.15 mm)

Vorschrift

To a stirred, ice-cold solution of sodium ethoxide in ethanol (prepared from 5.98 g of sodium spheres and 175 ml of ethanol) is added a solution of 29.8 g of thiophenol in 30 ml of ethanol during 15 min. After 10 min. this solution is treated at 0°-15° with a solution of 79.5 g of diethyl α-bromosuberate in 70 ml of ethanol during 15 min. The stirred mixture is warmed to room temperature during 60 min. and finally is heated at reflux for 60 min. The cooled solution is treated with 3 ml of gl acetic acid and concentrated. The residue is partitioned between ether and water. The ether layer is washed with water and brine, dried over MgSO4, and concentrated. The residue is subjected to fractional distillation to provide a light amber liquid, bp. 165°-180° (0.15 mm).

Quelle