Sodium Iodide → 2-{2-[4-(4-Fluorobenzoyl)piperidino}ethyl)naphtho[1,8-cd]isothiazole 1,1-dioxide

Participants

Reaction Conditions

Reaction Steps

The experiment is carried out as in Example 1, starting with 2-(2-chloroethyl)naphtho[1,8-cd]isothiazole 1,1-dioxide (6.7 g), triethylamine (3.5 cc), 4-(4-fluorobenzoyl)piperidine (5.2 g) and sodium iodide (3.7 g) in dimethylformamide (100 cc). The mixture is heated for 6 hours at boiling point, then cooled to a temperature of about 20° C. After purification by flash-chromatography on a silica column, under current of argon at medium pressure (0.5-1.5 bar) with dichloromethane as eluant, and recrystallization from boiling acetonitrile (8 cc), 2-{2-[4-(4-fluorobenzoyl)piperidino}ethyl)naphtho[1,8-cd]isothiazole 1,1-dioxide (2.9 g) is obtained, m.p. 145° C.

Provenance & Evidence