Cl.[CH2:2]([O:4][C:5](=[O:8])[CH2:6][NH2:7])[CH3:3].C([O-])([O-])=O.[K+].[K+].[Br:15][CH2:16][C:17](Br)=[O:18].O>C(Cl)Cl>[CH2:2]([O:4][C:5](=[O:8])[CH2:6][NH:7][C:17](=[O:18])[CH2:16][Br:15])[CH3:3]To a mixture of glycine ethyl ester hydrochloride (2.0 g, 14.3 mmol) and K2CO3 (2.1 g, 15.2 mmol) in CH2Cl2 (35 ml) cooled at 0-5° C. bromoacetyl bromide (1.36 ml, 15.6 mmol) was added dropwise. The suspension was stirred at room temperature and after 3 h H2O (20 ml) was added. The phases were separated and the organic one was washed with a saturated solution of NaHCO3 (20 ml) and H2O (20 ml) and dried over Na2SO4. The solvent was evaporated obtaining 39 as white solid (1.2 g, 40%). ESI+MS: calcd for C6H10BrNO3: 224.06; found: 224.0 and 226.0 (MH+).
Wird geladen…
