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. 71759-89-2 name is 5-Iodo-1H-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. 71759-89-2
Step 1 To a solution of 4-iodo-1H-imidazole (800 mg, 4.12 mmol) in DMF (50 mL) was added cesium carbonate (5.37 g, 16.5 mmol) and (bromomethyl)cyclopropane (1.6 mL, 16.5 mmol). The reaction mixture was stirred at room temperature for 3 h then concentrated under reduced pressure. The residue was dissolved in EtOAc and washed sequentially with water, sat’d LiCl and sat’d NaCl. The organic layer was dried over MgSO4 and concentrated. The residue was purified by silica gel chromatography (50% to 100% EtOAc/heptane) to isolate first 590 mg (58%) of 1-cyclopropylmethyl-4-iodo-1H-imidazole as a pale yellow oil followed by 227 mg (22%) of 1-cyclopropylmethyl-5-iodo-1H-imidazole as a pale yellow oil.
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 5-Iodo-1H-imidazole, and friends who are interested can also refer to it.
Reference:
Patent; Hendricks, Robert Than; Hermann, Johannes; Kondru, Rama; Lou, Yan; Lynch, Stephen M.; Owens, Timothy D.; Soth, Michael; US2011/230462; (2011); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem