Dimethyl Sulfoxide → HCID 54104386, compound

Participants

Reaction Steps

2.0 Grams (0.008 mole) of 5-(4-fluorophenoxy)-1,3-dimethylpyrazole-4-carbaldehyde oxime and 0.5 g (0.0125 mole) of powdery sodium hydroxide were added to 50 ml of dimethyl sulfoxide, and the resulting mixture was stirred for 30 minutes. To this solution was added 2.38 g (0.008 mole) of cyclohexyl 4-bromomethylbenzoate, and reaction was carried out at from 70° to 80° C. for 6 hours. After completion of the reaction, water was added to the reaction solution which was then extracted with ethyl acetate. The ethyl acetate extract was washed with water and dried, and ethyl acetate was removed by evaporation to obtain an oily product. This oily product was column-chromatographed on silica gel to obtain 3.0 g of the desired compound.

Provenance & Evidence