Methyl 4-[amino(hydroxyimino)methyl]-2-fluorobenzoate → tert-butyl N-[[3-[(Z)-N'-hydroxycarbamimidoyl]phenyl]methyl]-N-(2-hydroxyethyl)carbamate

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Title compound was prepared following procedure described for Intermediate 1 step 2 but starting from tert-Butyl 3-cyanobenzyl(2-hydroxyethyl)carbamate obtained from step 2 (6 g, 0.0217 mol) (RT for 12 h). Reaction mixture was concentrated under reduced pressure and purified by column chromatography using silica gel and chloroform/methanol as a eluent to afford the title compound as a white solid. 1H NMR (DMSO-d6, 400 MHz) δ 9.60 (s, 1H), 7.52-7.53 (m, 2H), 7.31-7.34 (m, 1H), 7.19-7.20 (m, 1H), 5.76 (s, 1H), 4.65-4.68 (m, 1H), 4.42 (s, 2H), 3.42-3.47 (m, 2H), 3.13-3.16 (m, 2H), 1.33-1.41 (m, 9H). LC/MS (Method A): 310.0 (M+H)+. HPLC (Method B) Rt 4.57 min (Purity: 94.1%).

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