Application of 4857-06-1, These common heterocyclic compound, 4857-06-1, name is 2-Chloro-1H-benzo[d]imidazole, 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.
General procedure: In a round bottom flask fitted with amagnetic stirrer, 2-chloro-1H-benzimidazole, 3, (0.50 g, 3.3 mmol) was dissolved in DMSO (3mL) and then NaH (60%; 0.19 g, 4.9 mmol) was added at 0 C and stirred for 1h. Next, benzylbromide (0.67 g, 3.9 mmol) was added to the suspension and the reaction was stirred at rt for 12h. Ice-cold water (15 mL) was added to the mixture and resulting precipitate was collected viafiltration. The filtrate was washed with water and dried under vacuum to give desired product, 4,as a white solid (0.75 g, 88%). LCMS: RT = 2.69 min., >98% 215 and 254 nm, m/z = 243.0 [M+ H]+. 1H NMR (499 MHz, CDCl3) delta 7.68 (d, J = 7.4 Hz, 1H), 7.35 – 7.24 (m, 5H), 7.16 (d, J =6.8 Hz, 2H), 5.38 (s, 2H). 13C NMR (126 MHz, CDCl3) delta 141.33, 134.83, 128.99, 128.22, 126.76,123.53, 123.05, 119.18, 109.98, 47.94.
Statistics shows that 2-Chloro-1H-benzo[d]imidazole is playing an increasingly important role. we look forward to future research findings about 4857-06-1.