反应详情

温度

25 °C

A solution of (2R)-(1-hydroxycyclohexyl)-2-(4-methoxyphenyl)acetic acid (156 mg, 0.59 mmol) in methylene chloride (1 mL) was treated with benzotriazol-1-yl-oxy-tris(dimethylamino)phosphonium hexafluorophosphate (313 mg, 0.71 mmol) and dimethylamine (2.0 M in tetrahydrofuran, 1.5 mL, 2.95 mmol). The reaction was stirred at 25° C. for 1.5 h after which time the solvent was evaporated and the product was purified via Biotage™ Horizon chromatography (FLASH 25 M, silica, gradient from 5% ethyl acetate/hexane to 36% ethyl acetate/hexane over 650 mL) to yield 160 mg (93%) (2R)-2-(1-hydroxycyclohexyl)-2-(4-methoxyphenyl)-N,N-dimethylacetamide as a white solid. MS (ESI) m/z 292; [α]D25=+81° (c=0.010 g/mL, EtOH).

1. customwas evaporated
2. customthe product was purified via Biotage™ Horizon chromatography (FLASH 25 M, silica, gradient from 5% ethyl acetate/hexane to 36% ethyl acetate/hexane over 650 mL)