Hydrochloric Acid → 3-(6-{[1-(2,2-Difluoro-2H-1,3-benzodioxol-5-yl)cyclopropane-1-carbonyl]amino}-3-methylpyridin-2-yl)benzoic acid--hydrogen chloride (1/1)

Participants

Reaction Conditions

Reaction Steps

To a slurry of 3-(6-(1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl) cyclopropanecarboxamido)-3-methylpyridin-2-yl)-t-butylbenzoate (1.0 eq) in MeCN (3.0 vol) was added water (0.83 vol) followed by concentrated aqueous HCl (0.83 vol). The mixture was heated to 45±5° C. After stirring for 24 to 48 h, the reaction was complete, and the mixture was allowed to cool to ambient. Water (1.33 vol) was added and the mixture stirred. The solid was collected by filtration, washed with water (2×0.3 vol), and partially dried on the filter under vacuum. The solid was dried to a constant weight (<1% difference) in a vacuum oven at 60° C. with a slight N2 bleed to afford 3-(6-(1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl) cyclopropanecarboxamido)-3-methylpyridin-2-yl)benzoic acid•HCl as an off-white solid.

Provenance & Evidence