Aluminium lithium hydride → HCID 22909714, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-[4-(ethoxycarbonyl)phenyl]-5-[4-(methylsulfonyl)phenyl]-3-(trifluoromethyl)pyrazole (2.4 g) and lithium aluminum hydride (0.25 g) in tetrahydrofuran (20 ml) was stirred at 55° C. for 2 hours. The reaction was quenched with methanol and water, and the mixture was filtered. The filtrate was concentrated and the residue was dissolved in a mixture of ethyl acetate and tetrahydrofuran. The solution was washed with water, dried, and evaporated. The residue was purified by column chromatography on silica gel eluting with a mixture of chloroform and methanol (20:1).to give a white powder of 1-[4-(hydroxymethyl)phenyl]-5-[4-(methylsulfonyl)phenyl]-3-(trifluoromethyl)pyrazole (1.3 g).

Provenance & Evidence