反应详情

A 22.7 g (0.1 mol) portion of 3'-hydroxy-2-methylbenzanilide was dissolved in 80 ml of dimethyl sulfoxide and to this solution was added a solution of 5.6 g (0.1 mol) of potassium hydroxide in 40 ml of water. The white mixture was cooled with water, and 30 ml of dimethyl sulfoxide containing 13.7 g (0.1 mol) of n-butylbromide was added dropwise to the solution with stirring. After the addition, the mixture was warmed and kept at 40° to 50° C for 3 hours. The reaction mixture was poured into 700 ml of water and the oily material formed was extracted with benzene. The benzene layer was washed with water, dehydrated over anhydrous sodium sulfate and the benzene was removed to obtain the product, which was recrystallized from a mixture of benzene and n-hexane (1 : 2) to obtain 26.3 g (92.9%) of greyish needle-like crystals having a melting point of 87° C.

1. additionwas added dropwise to the solution
2. additionAfter the addition
3. temperaturethe mixture was warmed
4. customthe oily material formed
5. extractionwas extracted with benzene
6. washThe benzene layer was washed with water
7. customthe benzene was removed
8. customto obtain the product, which
9. customwas recrystallized from a mixture of benzene and n-hexane (1 : 2)