تفاعل #89793

معادلة التفاعل

3-hydrazinobenzoic acid

isopropylmethylketone

→

product

المردود 81.4%

2,3,3-Trimethyl-4-carboxy-3H-indole

المردود 81.4%

المذيبات

ethanol

sulfuric acid

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةunder reflux in an oil bath for 20 h
2. 2
   أخرىwas evaporated off under reduced pressure to a small volume of ˜200 mL
3. 3
   أخرىCollected the solid with a filter funnel
4. 4
   غسيلwashed with iPrOH (3×30 mL) and ethyl ether (3×30 mL)
5. 5
   أخرىdried
6. 6
   أخرىFurther drying of the solid in an oven at 45° C. under high vacuum for 18 h

الإجراء التجريبي

A solution of 3-hydrazinobenzoic acid (30.0 g, 197 mmol), isopropylmethylketone (31.7 mL, 296 mmol) in ethanol (500 mL) and sulfuric acid (5 mL) was heated under reflux in an oil bath for 20 h. After cooling to ambient temperature the solvent was evaporated off under reduced pressure to a small volume of ˜200 mL. Collected the solid with a filter funnel, washed with iPrOH (3×30 mL) and ethyl ether (3×30 mL) and dried. Further drying of the solid in an oven at 45° C. under high vacuum for 18 h provided 32.59 g (81.3%) of the product. (This is [0148]1.2)

المصدر