反应详情

4,4'-Dihydroxydiphenyl (1) (32 g 0.17 mol) was dissolved in 2M solution hydroxide solution (0.34 mol) and dimethyl sulphate (22 g 0.175 mol) was added slowly with stirring over half an hour. The sodium salt of the required product was filtered off and dried. The yield was 24 g. The sodium salt of the phenol (24 g) was treated with acetyl chloride (150 cm3), filtered and excess acetyl chloride removed. Work up gave 4- methoxy-4'-acetoxydiphenyl (4) (22 g).

1. additionwas added slowly
2. filtrationThe sodium salt of the required product was filtered off
3. customdried
4. additionThe sodium salt of the phenol (24 g) was treated with acetyl chloride (150 cm3)
5. filtrationfiltered
6. customexcess acetyl chloride removed