Br[CH2:2][C:3]1[S:4][CH:5]=[C:6]([C:8]([O:10][CH2:11][CH3:12])=[O:9])[N:7]=1.[CH3:13][NH2:14]>C1COCC1.CCOC(C)=O>[CH3:13][NH:14][CH2:2][C:3]1[S:4][CH:5]=[C:6]([C:8]([O:10][CH2:11][CH3:12])=[O:9])[N:7]=1A solution of ethyl 2-bromomethylthiazole-4-carboxylate (4.25 g, 17 mmol) in THF (50 ml) was added to a solution of methylamine in THF (2M, 30 ml, 60 mmol) drop-wise while cooling to −10° C. The mixture was allowed to warm to room temperature and stirred for a further 30 min. The mixture was diluted with EtOAc and washed with 0.3N potassium hydrogen sulphate solution and brine. The organic phase was dried and reduced to yield ethyl 2-(methylaminomethyl)thiazole-4-carboxylate (3.06 g, 70%) as an orange oil which was used without further purification.
Loading…
