[CH:1]([C:3]1[O:7][C:6]([S:8]([OH:11])(=[O:10])=[O:9])=[CH:5][CH:4]=1)=O.[Na].[C:13]([NH:17][OH:18])([CH3:16])([CH3:15])[CH3:14]>>[C:13]([N+:17]([O-:18])=[CH:1][C:3]1[O:7][C:6]([S:8]([OH:11])(=[O:10])=[O:9])=[CH:5][CH:4]=1)([CH3:16])([CH3:15])[CH3:14]Following the procedure of Example 1 above and using 5-formylfuran-2-sulfonic acid, sodium salt hydrate and N-tert-butylhydroxylamine, the title compound was prepared in 36% yield as the sodium salt, m.p. 117-120° C. (dec.).
読み込み中…