Hydrazine → HCID 14230061, compound
Reaction equation
[CH3:1][N:2]1[C:7]2[CH:8]=[CH:9][C:10]([C:12](=O)[CH:13]([CH3:19])[CH2:14][C:15](OC)=[O:16])=[CH:11][C:6]=2[S:5][CH2:4][C:3]1=[O:21].[NH2:22][NH2:23]>C(O)C>[CH3:1][N:2]1[C:7]2[CH:8]=[CH:9][C:10]([C:12]3[CH:13]([CH3:19])[CH2:14][C:15](=[O:16])[NH:22][N:23]=3)=[CH:11][C:6]=2[S:5][CH2:4][C:3]1=[O:21]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
Methyl 4-(3,4-dihydro-4-methyl-3-oxo-1,4[2H]-benzothiazin-7-yl)-4-oxo-3-methylbutyrate (1.7 g) was heated at reflux overnight with 0.3 ml of hydrazine in 50 ml of ethanol. Filtration gave a white powder which was chromatographed on silica gel eluted with 5% methanol in methylene chloride, yielding 110 mg of the named compound, mp 193°-194.5° C.