Hydrochloric Acid → 1,3-Bis-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-2-hydroxypropane dihydrochloride

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Reaction Steps

A stirred mixture of 1-(2,3-epoxypropyl)-4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidine (1.19 g, 4.3 mmol) and 4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidine (0.95 g, 4.3 mmol) in isopropyl alcohol (50 ml) was heated at reflux for 1 hour, then stirred at 65 C for 16 hours. The solvent was removed on a rotary evaporator. The solid residues were purified by flash chromatography over a silica gel column (SiO2, 35 g; eluted with methylene chloride, DCM, and CH3OH in DCM). The product thus obtained, weighed 2.55 g. This material was dissolved in ethanol and was treated with a solution of HCl (1M in ether). The salt collected weighed 2.35 g, m.p. >270° C. dec.

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