Dimethylformamide → HCID 57429654, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-prop-2-ynyl-1H-pyrazole-4-carboxylic acid ethyl ester obtained as given in example B1 (0.200 g, 1.1 mmol), 4-iodo toluene (0.254 g, 1.1 mol), copper iodide (0.021 g, 0.11 mmol), dichlorobis (triphenylphosphine)-palladium (II) (39 mg, 0.06 mmol), triethylamine (2 ml), DMF (2 ml) was degassed for 10 min. and stirred for 20 hrs at 25-25° C. Reaction mixture was diluted with water (10 ml) and extracted with ethyl acetate. Organic layer was washed with brine solution and dried over Na2SO4. The solvent was evaporated and crude product was purified by column chromatography (Ethyl acetate:hexane-12:78) to obtain pure 1-(3-p-tolyl-prop-2-ynyl)-1H-pyrazole-4-carboxylic acid ethyl ester compound (0.226 g, 75%).

Provenance & Evidence