تفاعل #1193281

معادلة التفاعل

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

vanillin

→

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

المذيبات

dimethylformamide

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةAfter cooling down to room temperature the crystallized dye
2. 2
   ترشيحwas filtered with suction
3. 3
   غسيلrinsed with methanol

الإجراء التجريبي

218 g (1 mole) of 1-p-carboxyphenyl-3-methyl-2-pyrazolin-5-one and 152 g (1 mole) of vanillin were dissolved in 500 ml of dimethylformamide. The reaction mixture was heated for 3 h at 100° C. After cooling down to room temperature the crystallized dye was filtered with suction and rinsed with methanol.

المصدر