As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 1849-01-0 name is 1-Methyl-1H-benzo[d]imidazol-2(3H)-one, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below. 1849-01-0
Example 7 Preparation of 1,3-dihydro-1-methyl-3-[[4-[5-(trifluoromethyl)-1,2,4-oxadiazol-3-yl]phenyl]methyl]-2H-benzimidazol-2-one (Compound 159) A mixture of 3-[4-(chloromethyl)phenyl]-5-(trifluoromethyl)-1,2,4-oxadiazole (i.e. the product of Example 1, Step B) (0.3 g, 1.1 mmol), 1,3-dihydro-1-methyl-2H-benzimidazol-2-one (0.17 g, 1.1 mmol) and cesium carbonate (0.56 g, 1.7 mmol) in N,N-dimethylformamide (2.5 ml) was stirred at room temperature for 12 h. The reaction mixture was partitioned between ethyl acetate (25 ml) and water (5 ml). The organic layer was separated and washed with saturated aqueous sodium chloride solution, dried over sodium sulfate, filtered and concentrated under reduced pressure. The resulting material was purified by silica gel chromatography (eluting with a gradient of 0 to 50% ethyl acetate in hexanes) to provide the title compound, a compound of the present invention, as a solid (0.095 g). 1H NMR (CDCl3): delta 3.49 (s, 3H), 5.16 (s, 2H), 6.81-6.90 (m, 1H), 6.97-7.06 (m, 2H), 7.06-7.18 (m, 1H), 7.47 (d, 2H), 8.07 (d, 2H).
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1-Methyl-1H-benzo[d]imidazol-2(3H)-one, and friends who are interested can also refer to it.
Reference:
Patent; FMC Corporation; PASTERIS, Robert James; CHITTABOINA, Srinivas; MCMAHON, Travis Chandler; KAMIREDDY, Balreddy; REDDY, Ravisekhara Pochimireddy; (121 pag.)US2020/148672; (2020); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem