Dicyclohexylcarbodiimide → N-(1,1dimethylethoxycarbonyl)glycine N-(2-(-(phenylmethoxy)phenyl)ethyl)amide

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N-(1,1-Dimethylethoxycarbonyl)glycine N-(2-(4-phenylmethoxy)phenyl)ethyl)amide. N-(1,1-Dimethylethoxycarbonyl)glycine (850 mg, 4.85 mmol) was stirred with dicyclohexylcarbodiimide (1.00 g, 4.85 mmol) and 2-(4-(phenylmethoxy)phenyl)ethylamine (Intermediate C) (1.00 g, 4.4 mmol) in dry tetrahydrofuran (30 mL) for 16 h. The suspension was filtered and the solvent was evaporated from the filtrate under reduced pressure. The residue was dissolved in ethyl acetate and was washed with aqueous sulphuric acid (10%) and with saturated brine. The solution was dried with anhydrous magnesium sulphate and the solvent was evaporated under reduced pressure to give N-(1,1dimethylethoxycarbonyl)glycine N-(2-(-(phenylmethoxy)phenyl)ethyl)amide (1.65 g, 98%).

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