반응 #54509

반응 방정식

2-dodecyl-3-hydroxy-5-methyl-1,4-naphthoquinone

acetic anhydride

→

3-acetoxy-2-dodecyl-5-methyl-1,4-naphthoquinone

용매

pyridine

반응 조건

후처리

1. 1
   기타The resulting mixture was evaporated under reduced pressure
2. 2
   기타to remove the pyridine
3. 3
   기타The residue was recrystallized from methanol

실험 절차

3.8 Parts of 2-dodecyl-3-hydroxy-5-methyl-1,4-naphthoquinone, 8 parts of acetic anhydride and 32 parts of pyridine were stirred at room temperature for 16 hours. The resulting mixture was evaporated under reduced pressure to remove the pyridine. The residue was recrystallized from methanol to give 2.5 parts of 3-acetoxy-2-dodecyl-5-methyl-1,4-naphthoquinone, m.p. 69°-75° C.

출처