تفاعل #1193283

معادلة التفاعل

1-p-carboxyphenyl-3-methyl-2-pyrazolin-5-one

p-hydroxybenzaldehyde

→

1-(p-carboxyphenyl)-3-methyl-4-(p-hydroxybenzylidene)-2-pyrazolin-5-one

المذيبات

methanol

dimethylformamide

ظروف التفاعل

المعالجة

1. 1
   أخرىThe mixture obtained
2. 2
   درجة الحرارةwas heated
3. 3
   workup.ADDITIONwas added
4. 4
   workup.DISSOLUTIONThe dissolution of both compounds
5. 5
   أخرىThe dye started crystallizing after some 30 min
6. 6
   ترشيحThe dye was filtered with suction
7. 7
   غسيلrinsed with methanol

الإجراء التجريبي

218 g (1 mole) of 1-p-carboxyphenyl-3-methyl-2-pyrazolin-5-one were suspended in 600 ml of dimethylformamide. The mixture obtained was heated with stirring to 100° C., whereupon a solution of 122 g (1mole) of p-hydroxybenzaldehyde in 400 ml of methanol was added. The dissolution of both compounds was complete. The dye started crystallizing after some 30 min. The heating was stopped after 2 h and the reaction mixture was allowed to cool down to room temperature. The dye was filtered with suction and rinsed with methanol.

المصدر