反应详情

To a stirred suspension of 2-amino-2-(3-bromo-phenyl)-propane-1,3-diol (3.5 g, 14.22 mmol), 30 ml of THF and 30 ml of 10% aqueous Na2CO3 solution was added dropwise chloroacetyl chloride (1.472 ml, 18.5 mmol) at 0° C. over a period of 10 min. The mixture was stirred for 1 h, diluted with water and extracted with EtOAc. The organic phase was washed with 1N aqueous NaOH solution, 10% aqueous Na2CO3 solution and brine. Chromatography on silica gel (EtOAc/hexane 50-30%) gave the title compound in the form of a colourless solid. TLC (hexane/EtOAc=1:1): Rf=0.21; HPLC: RtH2=2.926 min; 1H-NMR (400 MHz, CD3OD): 7.58 (s, 1H), 7.44 (d, 1H), 7.37 (d, 1H), 7.29 (t, 1H), 4.91 (s, 2H), 4.07 (d, 2H), 4.00 (d, 2H); MS: 322, 324, 326 [(M+H)+].

1. extractionextracted with EtOAc
2. washThe organic phase was washed with 1N aqueous NaOH solution, 10% aqueous Na2CO3 solution and brine