(S)-1-N-苄氧羰基-2-氰基吡咯烷

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Part A. Benzyl (S)-2-cyanopyrrolidine-1-carboxylate (500 mg, 2.17 mmol) was dissolved in aqueous ethanol (3 m-L) and water (1 mL). Hydroxylamine hydrochloride (152 mg, 2.17 mmol) and Na2CO3 (115 mg, 1.08 mmol) were added and the reaction mixture heated to 100° C. for 1 h. The ethanol was removed and the aqueous residue was extracted with dichloromethane (3×25 mL), dried over Na2SO4 decanted and concentrated yielding benzyl (S)-2-(N-hydroxycarbamimidoyl)pyrrolidine-1-carboxylate as a pale yellow gum (428 mg, 75% yield): HPLC (method 1) tR=1.40 min, Purity 76%; LCMS (method 4) tR=0.81 min, m/z 264 (M+H). The ethanol was removed the aqueous residue was extracted with dichloromethane (3×25 mL) dried over Na2SO4 decanted concentrated

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Part A. Benzyl (S)-2-cyanopyrrolidine-1-carboxylate (500 mg, 2.17 mmol) was dissolved in aqueous ethanol (3 mL) and water (1 mL). Hydroxylamine hydrochloride (152 mg, 2.17 mmol) and Na2CO3 (115 mg, 1.08 mmol) were added and the reaction mixture heated to 100° C. for 1 h. The ethanol was removed and the aqueous residue was extracted with dichloromethane (3×25 mL), dried over Na2SO4 decanted and concentrated yielding benzyl (S)-2-(N-hydroxycarbamimidoyl)pyrrolidine-1-carboxylate as a pale yellow gum (428 mg, 75% yield): HPLC (method 1) tR=1.40 min, Purity 76%; LCMS (method 4) tR=0.81 min, m/z 264 (M+H). The ethanol was removed the aqueous residue was extracted with dichloromethane (3×25 mL) dried over Na2SO4 decanted concentrated