[CH2:1]([O:3][P:4]([C:9]1[O:13][C:12]([CH:14]=O)=[CH:11][CH:10]=1)([O:6][CH2:7][CH3:8])=[O:5])[CH3:2].[NH2:16][OH:17].C([O-])(=O)C.[Na+]>C(O)C>[CH2:1]([O:3][P:4]([C:9]1[O:13][C:12]([CH:14]=[N:16][OH:17])=[CH:11][CH:10]=1)([O:6][CH2:7][CH3:8])=[O:5])[CH3:2]A solution of 5-diethylphosphono-2-furaldehyde (1 mmole) in ethanol was treated with hydroxylamine (1.1 mmole) and sodium acetate (2.2 mmole) at 25° C. for 12 h. Extraction and chromatography gave 5-diethylphosphono-2-furaldehyde oxime.
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