Sodium Methoxide → 1-[(2R,3R)-3-(2,4-difluorophenyl)-3-hydroxy-4-(1H-1, 2,4-triazol-1-yl)-2-butylsulfonyl]-4-(4-methyl-4H-1,2,4-triazol-3-ylmethyl) piperazine

Participants

Reaction Conditions

Reaction Steps

In methanol (6 ml) were dissolved 1-[(2R,3R)-3-(2,4-difluorophenyl)-3-hydroxy-4-(1H-1,2,4-triazol-1-yl)-2-butylsulfonyl]piperazine-dihydrochloride (Compound 20, 0.40 g) and 3-chloromethyl-4-methyl-4H1,2,4-triazole.hydrochloride (255 mg). To the solution was added 1N-methanol solution of sodium methylate (3.69 ml), and the mixture was heated at 70° C. for 14 hours, then the reaction mixture was concentrated. The concentrate was dissolved in dichloromethane (30 ml), washed with water, dried and concentrated. The concentrate was recrystallized from ethyl acetate to give 1-[(2R,3R)-3-(2,4-difluorophenyl)-3-hydroxy-4-(1H-1, 2,4-triazol-1-yl)-2-butylsulfonyl]-4-(4-methyl-4H-1,2,4-triazol-3-ylmethyl) piperazine (Compound 26, 108 mg) as pale yellow crystals.

Provenance & Evidence