Dimethylformamide → HCID 18437822, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of N-methoxyethyl 2-(2,6-diethylphenyl)-1-methoxyethyl-3,4-dichloroimidazole (3.27 g, 10 mmol.) in anhydrous THF is added n-BuLi (1.6M in hexane) (9.4 ml, 15 mmol) dropwise at −78° C. After the reaction mixture is stirred at −78° C. for 2 h, anhydrous DMF (3 equiv.) is added in one portion. The mixture is stirred at −78° C. for 30 min, then allowed to warm to room temperature slowly. The reaction mixture is quenched with water and extracted with ethyl acetate, dried over MgSO4, filtered, concentrated in vacuo and purified by chromatography on silica gel to give 2-(2,6-diethylphenyl)-1-methoxyethyl-4-chloro-imidazole-3-carboxaldehyde. This material is used to make various compounds of Formula I as depicted in Scheme 10 and further illustrated in Examples 4–9 and related examples.

Provenance & Evidence