反应详情

A mixture of 2-(2-dimethylaminophenylthio)acetamidoxime (1.0 g), triethylorthoformate (1.5 ml) and boron trifluoride etherate (0.015 ml) was warmed at 70° whence a solution soon formed. Heating at 70° was continued for 5 hours, the reaction mixture cooled and solvent removed by evaporation under reduced pressure. The residual oil was taken up in diethyl ether, washed with 5% aqueous sodium carbonate solution and water, dried and evaporated to dryness under reduced pressure. The residue was distilled under reduced pressure to give 3-(2-dimethylaminophenylthiomethyl)-1,2,4-oxadiazole as a colourless oil, b.p. 119° (0.07 mm Hg).

1. temperaturewas warmed at 70° whence a solution
2. customsoon formed
3. temperatureHeating at 70°
4. temperaturethe reaction mixture cooled
5. customsolvent removed by evaporation under reduced pressure
6. washwashed with 5% aqueous sodium carbonate solution and water
7. customdried
8. customevaporated to dryness under reduced pressure
9. distillationThe residue was distilled under reduced pressure