Hydrochloric Acid → N-[2-(4-benzyloxy-3-methoxyphenyl)-1-methylethyl]-3-hydroxy-2-(4-methylphenyl)acrylamide

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반응 단계

2.40 g (5.95 mmol) of N-[2-(4-benzyloxy-3-methoxyphenyl)-1-methylethyl]-2-(4-methylphenyl)acetamide and 3.10 g (17.8 mmol) of t-butoxybis(dimethylamino) methane were mixed and stirred at 80° C. for 2 hours. The reaction mixture was cooled and tetrahydrofuran was added thereto. The reaction mixture was acidified with hydrochloric acid and stirred at room temperature for 2 hours. After the solvent was distilled off under reduced pressure, the residue was extracted with chloroform washed with saturated brine twice, dried over anhydrous magnesium sulfate and the solvent was distilled off under reduced pressure. The residue was subjected to silica gel chromatography (eluent, hexane:ethyl acetate=3:2) and dried to give 1.90 g of N-[2-(4-benzyloxy-3-methoxyphenyl)-1-methylethyl]-3-hydroxy-2-(4-methylphenyl)acrylamide.

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