[O-]P([O-])([O-])=O.[K+].[K+].[K+].[NH2:9][CH2:10][CH:11]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)[OH:12].I[C:20]1[CH:25]=[CH:24][CH:23]=[C:22]([N+:26]([O-:28])=[O:27])[CH:21]=1.C(O)CO>[Cl-].[Na+].O.[Cu]I.C(Cl)Cl.C(O)(C)C>[N+:26]([C:22]1[CH:21]=[C:20]([NH:9][CH2:10][CH:11]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[OH:12])[CH:25]=[CH:24][CH:23]=1)([O-:28])=[O:27]A 15 mL screw top test tube fitted with a PTFE septum cap was purged with argon before addition of CuI (5.0 mg, 0.026 mmol, 2.6 mol %), K3PO4 (425 mg, 2.0 mmol), rac-2-amino-1-phenylethanol (140 mg, 1.02 mmol) and 1-iodo-3-nitrobenzene (302 mg, 1.25 mmol). Ethylene glycol (56 μL, 1.02 mmol) and isopropyl alcohol (1.0 mL) were added, via syringe, under argon. The septum cap was replaced with a solid, Teflon-lined cap and the reaction was stirred magnetically at 75° C. for 48 h. The reaction mixture was allowed to cool before dilution with 10 mL brine and extraction with methylene chloride (3×10 mL). The organic extracts were washed with 0.1 M NaOH (2×10 mL), washed with brine (1×15 mL), dried over MgSO4 and concentrated. The crude material was purified by silica gel chromatography using methylene chloride/ethyl acetate (96:4). The product was obtained as an orange, viscous oil in 66% yield (172.8 mg).
불러오는 중…
