2-Acetylbutyrolactone → 3-((E)-1-[3-Methyl-1-(2,4,6-trichlorophenyl)-1H-5-pyrazolyl]aminoethylidene)tetrahydro-2-furanone
반응식
[NH2:1][C:2]1[N:3]([C:8]2[C:13]([Cl:14])=[CH:12][C:11]([Cl:15])=[CH:10][C:9]=2[Cl:16])[N:4]=[C:5]([CH3:7])[CH:6]=1.[C:17]([CH:20]1[CH2:25][CH2:24][O:23][C:21]1=[O:22])(=O)[CH3:18]>C(O)C>[CH3:7][C:5]1[CH:6]=[C:2]([NH:1]/[C:17](=[C:20]2/[C:21](=[O:22])[O:23][CH2:24][CH2:25]/2)/[CH3:18])[N:3]([C:8]2[C:13]([Cl:14])=[CH:12][C:11]([Cl:15])=[CH:10][C:9]=2[Cl:16])[N:4]=1참가 물질
4
실험 절차
3-Amino-2-(2,4,6-trichlorophenyl)-5-methylpyrazole (1 g, 3.62 mmol) was dissolved in ethanol (10 mL). α-Acetyl-γ-butyrolactone (0.409 mL, 3.80 mmol) was added, followed by heating under reflux for two days. After ethanol was evaporated, the residue was purified by silica gel column chromatography (10% ethyl acetate/hexane), to give the title compound (700 mg, 1.80 mmol) as a pale yellow oil.