Sodium ethoxide → HCID 54274638, compound

Participants

Reaction Steps

An ethanolic solution of 900 mg of sodium ethoxide was dropped into an ethanolic solution containing 6.88 g of 3-dimethylamino-2-nitrobenzyl-triphenylphosphonium bromide and 3.22 g of 3-(4-phenyl-1H-imidazol-1-yl)propionaldehyde. The obtained solution was heated under reflux for 2 hours to conduct a reaction. After the completion of the reaction, the reaction mixture was freed from the solvent by distillation and extracted With 2N NaOH. The aqueous layer was made acidic again with 1N HCl and extracted with ethyl acetate. The ethyl acetate layer was washed with a saturated aqueous solution of common salt, dried over magnesium sulfate and distilled to remove the solvent. The obtained oily substance was purified by silica gel chromatography to give 6.80 g of 2-nitro-3-[4-(4-phenyl-1H-imidazol-1-yl)butenyl]-N,N-dimethylaniline. 680 mg of 10% Pd-C was added to a solution of the product in ethyl acetate to conduct catalytic reduction in a hydrogen stream. Thus, 2-dimethylamino-6-[4-(4-phenyl-1H-imidazol-1-yl) butyl]aniline was obtained as an oily substance. This substance was dissolved in chloroform to give a solution. 1.1 g of butyl isocyanate was dropped into the solution. The obtained mixture was heated under reflux for two hours to conduct a reaction. After the completion of the reaction, the reaction mixture was concentrated to precipitate a crystal. This crystal was recrystallized from an ethyl acetate/hexane mixture. Thus, 4.51 g of the title compound was obtained.

Provenance & Evidence