تفاعل #54509

معادلة التفاعل

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

acetic anhydride

→

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

المذيبات

pyridine

ظروف التفاعل

المعالجة

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

الإجراء التجريبي

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.

المصدر