반응 #63464

반응 방정식

4-(3,4-Dihydro-3-oxo-1,4[2H]-benzothiazin-6-yl)-4-oxobutyric acid

hydrazine

→

title compound

6-(3,4-Dihydro-3-oxo-1,4[2H]-benzothiazin-6-yl)-2,3,4,5-tetrahydropyridazin-3-one

용매

ethanol

반응 조건

후처리

1. 1
   온도The mixture was heated
2. 2
   온도at reflux for three hours
3. 3
   온도cooled slowly
4. 4
   여과Filtration

실험 절차

4-(3,4-Dihydro-3-oxo-1,4[2H]-benzothiazin-6-yl)-4-oxobutyric acid (2.0 g) was suspended in 60 ml of ethanol and 1 ml of hydrazine added. The mixture was heated at reflux for three hours, then cooled slowly. Filtration gave 1.85 g of the title compound, mp 299°-302° C.

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