[N+:1]([C:4]1[C:5]([O:10][CH2:11][C:12]2([CH2:15][C:16]#[N:17])[CH2:14][CH2:13]2)=[N:6][CH:7]=[CH:8][CH:9]=1)([O-])=O>C(O)(=O)C.C(O)C>[NH2:1][C:4]1[C:5]([O:10][CH2:11][C:12]2([CH2:15][C:16]#[N:17])[CH2:14][CH2:13]2)=[N:6][CH:7]=[CH:8][CH:9]=12-(1-((3-Nitropyridin-2-yloxy)methyl)cyclopropyl)acetonitrile (466 mg) was dissolved in a mixture of glacial acetic acid (4 ml) and ethanol (8 ml). Ferrum (1.1 g) was added and the reaction mixture was heated to 100° C. for 2 h. The mixture was concentrated in vacuo and the residue was dissolved in dichloromethane, extracted with an aqueous solution of K2CO3 (2M) and concentrated in vacuo
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