反应详情

温度

20 °C

To a solution of 48.94 g 2-chloro-5-iodo-benzoic acid in 180 mL of fluorobenzene and 0.3 mL of N,N-dimethylformamide is added 16.2 mL of oxalyl chloride at 0 to 10° C. The solution is stirred at about 20° C. for 2 hours. The excess amount of oxalyl chloride is evaporated. The residue is diluted in 166 mL of fluorobenzene and 25.93 g of aluminum chloride is added at 0° C. in five portions. The solution is stirred at 75° C. for 1.5 hours and quenched with 300 mL of water at 0 to 25° C. The product is extracted in 300 mL of isopropylacetate and washed with two times of 200 mL brine (3 weight-%). The residue water and solvent is removed upon evaporation.

1. customThe excess amount of oxalyl chloride is evaporated
2. additionThe residue is diluted in 166 mL of fluorobenzene
3. addition25.93 g of aluminum chloride is added at 0° C. in five portions
4. stirringThe solution is stirred at 75° C. for 1.5 hours
5. customquenched with 300 mL of water at 0 to 25° C
6. extractionThe product is extracted in 300 mL of isopropylacetate
7. washwashed with two times of 200 mL brine (3 weight-%)
8. customThe residue water and solvent is removed upon evaporation