4857-06-1, 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. 4857-06-1 name is 2-Chloro-1H-benzo[d]imidazole, 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.
The N-methyl-1H-benzo[d]imidazol-2-amine, used as starting material, can be prepared as follows:2-Chloro-1H-benzo[d]imidazole (20 g, 131.08 mmol) was charged to high pressure autoclave PV10832 (Hastelloy 450 ml) with methylamine (260 mL, 131.08 mmol) and sealed on its trolley and the resulting solution heated to 160 C. in high pressure blast cell 60 for 16 hours. The pressure in the autoclave reached 11 bar. The solvent was removed under reduced pressure to afford a brown oil. EtOH was added and the solvent again removed to afford a brown foam. The foam was dissolved in a minimum of hot acetone. This was then allowed to cool. The resultant solid was filtered affording N-methyl-1H-benzo[d]imidazol-2-amine (9.91 g, 51%); 1H NMR (400 MHz, DMSO-d6) 2.83 (3H, s), 6.87-7.00 (2H, m), 7.05-7.25 (2H, m), 7.49 (1H, s).
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2-Chloro-1H-benzo[d]imidazole, and friends who are interested can also refer to it.
Reference:
Patent; ASTRAZENECA AB; US2011/306613; (2011); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem