反应详情

To a solution of 18.1 g (0.1 mol) of 2-chloroethane phosphonic acid dichloride in 150 ml of absolute ether is added dropwise with stirring a solution of 21.2 g (0.2 mol) of hydroxyethyl ethyl sulphide and 15.8 g of absolute pyridine in 100 ml of absolute ether at room temperature, during which the temperature increases to 35° and crystallisation occurs. Stirring is continued for a further 14 hours at 25° after which the crystals are removed by filtration and the ethereal filtrate is washed to neutrality with 5% hydrogen carbonate solution and water. It is dried and evaporated and further dried by rotation under high vacuum for 2 hours. A yellow oil is obtained having the following characterisation data:

1. temperatureduring which the temperature increases to 35°
2. customcrystallisation
3. customafter which the crystals are removed by filtration
4. washthe ethereal filtrate is washed
5. customIt is dried
6. customevaporated
7. customfurther dried by rotation under high vacuum for 2 hours
8. customA yellow oil is obtained