تفاعل #92062

معادلة التفاعل

2-amino-4-trifluoromethylpyridine

N-bromosuccinimide

→

red solid

المردود 58.3%

2-amino-4-trifluoromethyl-5-bromopyridine

المردود 58.3%

المذيبات

chloroform

ظروف التفاعل

المعالجة

1. 1
   تركيزThe reaction mixture was concentrated
2. 2
   أخرىpurified by column chromatography with gradient elution (petroleum ether: ethyl acetate=10:1 and dichloromethane)

الإجراء التجريبي

2-amino-4-trifluoromethylpyridine (5 g, 30.8 mmol, Langfang Beixin Chemical Co., Hebei) was dissolved in 100 mL of chloroform and N-bromosuccinimide (5.92 g, 33.3 mmol) was added in batches. The mixture was stirred in darkness or away from light at room temperature for 3 hours. The reaction mixture was concentrated and purified by column chromatography with gradient elution (petroleum ether: ethyl acetate=10:1 and dichloromethane), so as to give 4.33 g of red solid. Yield: 58.2%. LC-MS: 240 (M+1), 242 (M+2+1).

المصدر