反应详情

To 19 g (0.1 mol) of α-chloro-4-chlorobenzaldoxime prepared above was added 20.6 g (2.0 mol) of acetic anhydride followed by heating on a water bath at a temperature of from 80° to 90° C for about 2 hours. After completion of the reaction, the reaction mixture was poured into water to give pale yellow crystals. The product thus obtained was filtered, dried and recrystallized from ligroin to give 18 g of the desired product as white crystals having a melting point of 76°-77° C. Yield, 77%.

1. temperatureby heating on a water bath at a temperature of from 80° to 90° C for about 2 hours
2. customAfter completion of the reaction
3. customto give pale yellow crystals
4. customThe product thus obtained
5. filtrationwas filtered
6. customdried
7. customrecrystallized from ligroin