반응 #87914

반응 방정식

4-fluorobenzoyl chloride

2-aminophenol

nitrogen in

sodium bicarbonate

2-aminophenol

2-methyl tetrahydrofuran

→

4-Fluoro-N-(2-hydroxyphenyl)-benzamide

용매

water

반응 조건

후처리

1. 1
   기타The temperature of the mixture was controlled under 20° C. by ice-bath
2. 2
   workup.STIRRINGto be stirred for another 1.5 hrs
3. 3
   기타to quench
4. 4
   기타the reaction
5. 5
   workup.STIRRINGwith stirring
6. 6
   기타The mixture was partitioned into two phases
7. 7
   세척the organic phase was washed with 100 ml of 1N H2SO4 and subsequently with 100 ml of water
8. 8
   기타Then the solvent was evaporated to almost dryness
9. 9
   workup.STIRRINGwith stirring

실험 절차

To a 500 ml 4 necked round bottom flask equipped with a thermometer, a mechanic stirrer, a drop funnel, a nitrogen in-let, was added sodium bicarbonate (29.6 g, 0.354 mol, 1.1 eq), 2-aminophenol (34.88 g, 0.32 mol, 1 eq) and 2-Methyl THF (250 ml). The temperature of the mixture was controlled under 20° C. by ice-bath. Under vigorously stirring, 4-fluorobenzoyl chloride (50.72 g, 0.32 mol, 1 eq) was added drop wise within 10 min. Then the reaction was allowed to be stirred for another 1.5 hrs. When HPLC data showed that less than 0.3% of 2-aminophenol remained, 100 ml of water and 50 ml of 2-methyl tetrahydrofuran was added to quench the reaction and then the mixture was heated to 60° C. with stirring. The mixture was partitioned into two phases and the organic phase was washed with 100 ml of 1N H2SO4 and subsequently with 100 ml of water. Then the solvent was evaporated to almost dryness with stirring.

출처