Electric Literature of 934-32-7, 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. 934-32-7 name is 1H-Benzo[d]imidazol-2-amine, 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.
To the mixture of 2-aminobenzimidazole (1 mmol), malononitrile (1 mmol) and 4-fluorobenzaldehyde (1 mmol) in ethylene glycol (5 mL), SSA (42.6 mg, 0.11 mol %) wasadded. The mixture was heated at 50 C for 5 minutes. After completion of the reaction(TLC), 10 mL EtOAc was added to the reaction mixture and the catalyst was recovered by filtration. The organic layer was dried over Na2SO4; the solvent was evaporated and purified by recrystallization from ethanol to give compounds 1b. Yield 87%
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1H-Benzo[d]imidazol-2-amine, and friends who are interested can also refer to it.
Reference:
Article; Basyouni, Wahid M.; Abbas, Samir Y.; Abdelazeem, Nagwa M.; El-Bayouki, Khairy A. M.; El-Kady, Mohamed Y.; Synthetic Communications; vol. 49; 22; (2019); p. 3112 – 3120;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem