تفاعل #8177

معادلة التفاعل

4-chlorobenzenesulfonamide

hydrazine

→

title compound

المردود 95.0%

4-Hydrazinobenzenesulfonamide

المردود 95.0%

المذيبات

water

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةat reflux for 30 hours
2. 2
   ترشيحThe resulting precipitate was collected by filtration
3. 3
   غسيلwashed thoroughly with water several times
4. 4
   أخرىair-dried
5. 5
   أخرىdried under vacuum

الإجراء التجريبي

A stirred solution of 4-chlorobenzenesulfonamide (38.33 g, 200 mmol) and anhydrous hydrazine (31.4 mL, 1.0 mol) was heated at reflux for 30 hours. After cooling to room temperature, the mixture was poured into water (500 mL) with swirling. The resulting precipitate was collected by filtration, washed thoroughly with water several times, air-dried, and dried under vacuum to give the title compound (35.5 g, 95% yield) as a white solid. Mp 169–171° C. 1H NMR (300 MHz, THF-d8) δ 7.59 (d, J=8.8 Hz, 2H), 6.77 (d, J=8.8 Hz, 2H), 6.62 (br, 1H), 5.99 (br, 2H), 3.87 (br, 2H). Mass spectrum (API-TIS) m/z 188 (MH+).

المصدر