Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 1792-40-1, name is 2-Methyl-5-nitro-1H-benzo[d]imidazole, A new synthetic method of this compound is introduced below., Recommanded Product: 2-Methyl-5-nitro-1H-benzo[d]imidazole
To a solution of 2-methyl-5-nitro-1H-benzimidazole (2) (9.0 g,0.05 mol) in ethanol (50 mL), K2CO3 (6.98 g, 0.075 mol) and benzylchloride (9.63 g, 0.075 mol) were refluxed for 8 h. After the completionof the reaction (monitored by TLC), the reaction mixturewas filtered and concentrated to give yellow solid. The residualmass was crystallized from ethanol to give mixture of 1-benzyl-2-methyl-5-nitro-1H-benzimidazole and 3-benzyl-2-methyl-5-nitro-3H-benzimidazole (3) in 75% yield. To a suspension of SnCl2 2H2O (15.45 g, 0.067 mol) in 2 N HCl (47.6 mL), 1/3-benzyl-2-methyl-5-nitro-1H/3H-benzimidazole (3) (4.25 g, 0.019 mol)was heated at 110 C for 7 h. After completion of the reaction,the suspension was neutralized with 2 N NaOH and diluted withethanol. Filtered the solid product and extracted the filtrate with chloroform, dried over Na2SO4, filtered and concentrated to getmixture of products which were separated through column chromatographyusing ethyl acetate/methanol (19:1) as eluent to getsolid compounds 4a and 4b.
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Article; Singla, Prinka; Luxami, Vijay; Paul, Kamaldeep; Bioorganic and Medicinal Chemistry; vol. 23; 8; (2015); p. 1691 – 1700;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem