Reference of 16042-25-4, These common heterocyclic compound, 16042-25-4, name is 2-Imidazolecarboxylic acid, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
PREPARATION 35 1-amino-N-o-tolyl-1H-imidazole-2-carboxamide a) N-o-tolyl-1H-imidazole-2-carboxamide To a solution of 1H-imidazole-2-carboxylic acid (0.52 g, 4.64 mmol) in DMF (20 mL) was added o-toluidine (0.50 mL, 4.64 mmol), EDC·HCl (1.35 g, 6.96 mmol) and HOBt (0.94 g, 6.96 mmol). The reaction mixture was stirred at room temperature for 16 hours. Then, it was poured into water and extracted with ethyl acetate. The combined organic layer was dried over sodium sulphate, filtered and concentrated to dryness. The crude product was purified by flash chromatography (2% to 3% MeOH/DCM) to yield 0.93 g (99%) of the title compound as a beige solid. LRMS (m/z): 202 (M+1)+.
Statistics shows that 2-Imidazolecarboxylic acid is playing an increasingly important role. we look forward to future research findings about 16042-25-4.