反应详情

A suspension of 6.35 g of 2-bromo-3',4'-dihydroxy-5'-nitroacetophenone is treated with 4.68 g of 1-(3-quinolinyl)-2-thiourea in 150 ml of n-butanol and heated to boiling under reflux for 3 hours. After cooling to room temperature the crystals are filtered under suction and recrystallized from n-butanol. There is obtained 3-nitro-5-[2-(3-quinolinylamino)-4-thiazolyl]pyrocatechol hydrobromide of m.p.>300° .

1. temperatureheated
2. temperatureunder reflux for 3 hours
3. filtrationare filtered under suction
4. customrecrystallized from n-butanol