Hydrochloric Acid → 4-[[(1-Propyl-1H-imidazol-5-yl)methyl]sulfinyl]benzenamine

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Reaction Steps

To (−)-4-{[(1-propyl-1H-imidazol-5-yl)methyl]sulfenyl}phenylamine di-p-toluoyl-D-tartarate monohydrate (5 g) were added 1N hydrochloric acid (25 ml) and ethyl acetate (15 ml) to effect reverse extraction. To the aqueous layer was added aqueous 25% potassium carbonate solution (25 ml) (pH 9) and the mixture was extracted with 25 ml of ethyl acetate-IPA (4:1) three times. The organic layer was washed with saturated brine (25 ml) and dried with magnesium sulfate. The solvent was distilled off to give (−)-4-{[(1-propyl-1H-imidazol-5-yl)methyl]sulfinyl}-phenylamine.

Provenance & Evidence