Synthetic Route of 5851-46-7, These common heterocyclic compound, 5851-46-7, name is 2-Pentyl-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: The respective 1H-benz[d]imidazole(2.50 mmol) was dissolved in 10 ml of abs. DMF. Sodium hydride(60 % dispersion in mineral oil) (0.2 g, 5 mmol) was added withcooling. After the gas formation stopped, 4?-bromomethyl-[1,1?-biphenyl]-2-carbonitrildissolved in 2 ml of abs. DMF was added dropwise and the solution wasstirred for 1 h under cooling in an ice bath and further 2h at RT. Water wasadded and after the solution was acidified with HCl the product was extractedthree times with methylene chloride. The combined organic layers were driedover Na2SO4 and evaporated to dryness in vacuo. The crudeproduct was purified by column chromatography on silica gel with methylenechloride/methanol (95:5) and if necessary recrystallized from diethyl ether/methanol.
Statistics shows that 2-Pentyl-1H-benzo[d]imidazole is playing an increasingly important role. we look forward to future research findings about 5851-46-7.