Hydrazine hydrate (1:1) → HCID 15754479、化合物
反応式
[N+:1]([C:4]1[CH:19]=[CH:18][CH:17]=[CH:16][C:5]=1[C:6]([CH:8]1[C:13](=O)[CH2:12][CH2:11][CH2:10][C:9]1=[O:15])=O)([O-:3])=[O:2].O.[NH2:21][NH2:22]>C(O)C>[O:15]=[C:9]1[CH2:10][CH2:11][CH2:12][C:13]2[NH:22][N:21]=[C:6]([C:5]3[CH:16]=[CH:17][CH:18]=[CH:19][C:4]=3[N+:1]([O-:3])=[O:2])[C:8]1=2参加物
4
実験手順
3.2 g (12.2 mmol) of 2-nitrobenzoylcyclohexane-1,3-dione and 0.52 g (12.2 mmol) of hydrazine hydrate (80%) are refluxed for 4 hours in 120 ml of ethanol. The ethanol is subsequently distilled off under reduced pressure, and 80 ml of methanol are added. The solid which precipitates is filtered off with suction and dried in vacuo. 1.41 g (45% of theory) of 4,5,6,7-tetrahydro-4-oxo-3-(2-nitro-phenyl)-1H-indazole of the formula ##STR6## and of melting point 236° C. (decomp.) are obtained.