反应详情

温度

0 °C

At RT, 385 mg (1.30 mmol) of 4-(2-chlorophenyl)-2-{[5-(trifluoromethyl)-2H-tetrazol-2-yl]methyl}pyrimidine-5-carboxylic acid was initially charged in 5 ml of acetonitrile, and 0.27 ml (2.33 mmol) of lutidine was added. With stirring, the solution was then cooled to 0° C., 0.14 ml (1.78 mmol) of methanesulphonyl chloride, dissolved in 2 ml of acetonitrile, was added dropwise and the mixture was stirred at 0° C. for another 15 min. A little at a time, an acetonitrile suspension (3 ml) of 0.53 ml (4.54 mmol) of lutidine and 289 mg (1.56 mmol) of 2-amino-5-chloro-3-methylbenzoic acid was then added to this reaction mixture, and stirring was continued for another 15 min. 0.14 ml (1.78 mmol) of methanesulphonyl chloride, dissolved in 2 ml of acetonitrile, was then added dropwise. The reaction was stirred overnight, with the temperature increasing to RT. The solvent was removed under reduced pressure. The residue was then poured into ice-water and mixed in an ultrasonic bath. The residue was filtered off, again taken up in water and sonicated once more. The residue is filtered off, washed with water and dried under reduced pressure. 708 mg (88% of theory; content 86%) of the desired product were isolated. There was not further purification.

1. additionwas added dropwise
2. stirringthe mixture was stirred at 0° C. for another 15 min
3. stirringstirring
4. additionwas then added dropwise
5. stirringThe reaction was stirred overnight, with the temperature
6. temperatureincreasing to RT
7. customThe solvent was removed under reduced pressure
8. additionThe residue was then poured into ice-water
9. additionmixed in an ultrasonic bath
10. filtrationThe residue was filtered off
11. customsonicated once more
12. filtrationThe residue is filtered off
13. washwashed with water
14. customdried under reduced pressure