Water → HCID 57248251, compound

Participants

Reaction Steps

84 mg (2.16 mmole) of lithium aluminum hydride were added, under an atmosphere of nitrogen, to a solution of 320 mg (1.08 mmole) of (2R*,3S*,4S*)-2-(2,4-difluoro-phenyl)-4,5-epoxy-3-methyl-1-(1H-1,2,4-triazol-1-yl)-2-pentanol (stereoisomer A) [prepared as described in step (a) above] in 20 ml of diethyl ether, whilst ice-cooling and stirring. Ten minutes later the reaction mixture was heated under reflux, and this was continued for hour. At the end of this time, the mixture was cooled, and 2 ml of water were slowly added; the mixture was then stirred for 10 minutes. The insoluble materials in the reaction mixture were removed by filtration using a Celite filter aid, and then the residue was washed with ethyl acetate. The combined filtrate and washings were dried and freed from the solvent by distillation under reduced pressure. The resulting oily residue was subjected to column chromatography through silica gel, using a 5:5:1 by volume mixture of ethyl acetate, chloroform and hexane as the eluent, to afford 240 mg of the title compound.

Provenance & Evidence