تفاعل #74772

معادلة التفاعل

Valeryl chloride

2-chloro-4-nitroaniline

hydrochloric acid

→

2'-Chloro-4'-nitrovaleranilide

المذيبات

pyridine

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةheated (80°-100° C.) for twenty-four hours
2. 2
   أخرىThe precipitated solid is collected
3. 3
   غسيلwashed well with water
4. 4
   أخرىdried
5. 5
   أخرىRecrystallization from cyclohexane yeilds material (19.75 g.) of m.p. 95°-97° C.

الإجراء التجريبي

Valeryl chloride (12.06 g., 0.10 mole) is added dropwise to a cooled stirred solution of 2-chloro-4-nitroaniline (17.26 g., 0.10 mole) in pyridine (100 ml.). The mixture is warmed to ambient temperature, then heated (80°-100° C.) for twenty-four hours. The cooled solution is poured into cold 1 N hydrochloric acid (500 ml.) with stirring. The precipitated solid is collected, washed well with water and dried, 25.1 g., m.p. 80°-95° C. Recrystallization from cyclohexane yeilds material (19.75 g.) of m.p. 95°-97° C.

المصدر