反应详情

2-Phenylsulphonyl-4-(5-tetrazolyl)benzoic acid (200 mg) was heated with concentrated sulphuric acid (10 ml) for 5 hr. at 120° C. After cooling and dilution with water, a solid product seperated and was filtered off, washed with water, and recrystallised from acetic acid to give 3-(5-tetrazolyl)thioxanthone-10,10-dioxide, identified by its infrared spectrum.

1. customat 120° C
2. temperatureAfter cooling
3. customdilution with water, a solid product seperated
4. filtrationwas filtered off
5. washwashed with water
6. customrecrystallised from acetic acid