反应详情

2.00 g of 3-(5-amino-4-chloro-2-fluorophenyl)-1-methyl-6-trifluoromethyl-2,4 (1H,3H)-pyrimidinedione was dissolved in 5 ml of benzene. To the obtained solution, 0.61 ml of acetic anhydride was added an the resultant solution was refluxed for one hour. After distilling off benzene, the obtained crude product was washed with hexane to obtain 3-(5-acetylamino-4-chloro-2-fluorophenyl) -1-methyl-6-trifluoromethyl-2,4(1H,3H)-pyrimidinedione as white crystals.

1. temperaturewas refluxed for one hour
2. distillationAfter distilling off benzene
3. customthe obtained crude product
4. washwas washed with hexane