Ammonium Chloride → HCID 9883124, compound

Participants

Reaction Steps

A solution of 14.75 g of the compound of Step A diluted with 30 ml of ethyl ether is added dropwise, at 35° C., to 80 ml of a 2M solution of 4-fluorophenylmagnesium bromide in ethyl ether. After 2 hours, the reaction mixture is cooled and hydrolysed with 20 ml of a saturated ammonium chloride solution. After filtration and washing with ethyl ether, the organic phases are combined and dried over calcium sulphate and then concentrated. The product is isolated by chromatography on silica gel (eluant: cyclohexane/ethyl acetate:97.5/2.5). Crystallisation yields 2 g of the product.

Provenance & Evidence