تفاعل #2439950
ord-eb7c8ca6f89b47929d179b107561a467
معادلة التفاعل
المتفاعلات
الكواشف
ظروف التفاعل
المعالجة
- 1أخرىproducing a black oil
- 2درجة الحرارةSubsequently, the reaction mixture was cooled to room temperature
- 3ترشيحThe suspension was filtered
الإجراء التجريبي
2-Ethyl-5-methyl-2H-pyrazole-3-carboxylic acid [4-(2-oxo-2,3-dihydro-1H-indole-5-carbonyl)-phenyl]-amide (0.735 g, 1.89 mmol) and ethyl formate (0.454 mL, 3.78 mmol) were dissolved in anhydrous ethanol (3.80 mL). The resulting solution was treated in dropwise fashion with a 21 wt % solution of sodium ethoxide in ethanol (3.53 mL, 9.46 mmol). This reaction mixture was heated at 78° C. for 1 h, producing a black oil. Subsequently, the reaction mixture was cooled to room temperature, and then the reaction pH was adjusted to pH 1 with dropwise addition of 1M HCl(aq) causing the formation of a pale orange precipitate. The suspension was filtered yielding an orange solid as the pure 2-Ethyl-5-methyl-2H-pyrazole-3-carboxylic acid [4-(3-hydroxymethylene-2-oxo-2,3-dihydro-1H-indole-5-carbonyl)-phenyl]-amide (0.594 g, 1.42 mmol, 75%).