تفاعل #65771

معادلة التفاعل

3,4-diethoxycarbonyl-2-fluoro-5-nitro-6-phenylpyridine

acetic acid

→

3-Amino-6-fluoro-4,5-diethoxycarbonyl-2-phenylpyridine

المذيبات

ethanol

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITIONwas added to the solution
2. 2
   درجة الحرارةAfter the mixture was refluxed for 30 minutes
3. 3
   workup.DISTILLATIONthe solvent was distilled off
4. 4
   استخلاصfollowed by extraction with ethyl acetate
5. 5
   أخرىAfter the precipitate was removed by filtration
6. 6
   غسيلthe obtained organic layer was washed with water
7. 7
   تجفيفa saturated aqueous solution of sodium chloride, and dried
8. 8
   workup.DISTILLATIONThen, the solvent was distilled off

الإجراء التجريبي

In 5 ml of ethanol was dissolved 160 mg of 3,4-diethoxycarbonyl-2-fluoro-5-nitro-6-phenylpyridine, and 120 mg (5 eq.) of reduced iron was added to the solution, followed by addition of 0.5 ml (20 eq.) of acetic acid. After the mixture was refluxed for 30 minutes, the solvent was distilled off. The residue was neutralized with sodium hydrogencarbonate, followed by extraction with ethyl acetate. After the precipitate was removed by filtration, the obtained organic layer was washed with water and a saturated aqueous solution of sodium chloride, and dried. Then, the solvent was distilled off.

المصدر