Triethylamine → 2-{3-[4-(1,2-Benzisoxazol-3-yl)-1-piperazinyl]propyl}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-(3-chloropropyl)naphtho[1,8-cd]isothiazole 1,1-dioxide (3.6 g), triethylamine (1.8 cc) and 4(1,2-benzisoxazol-3-yl)piperazine (2.69) in dimethylformamide (200 cc). The mixture is heated for 8 hours at boiling point, then cooled to a temperature of about 20° C. After purification by flash-chromatography on silica gel, under a current of argon at medium pressure (0.5-1.5 bar) with dichloromethane as eluant, and recrystallization from boiling acetonitrile (30 cc), 2-{3-[4-(1,2-benzisoxazol-3-yl) -1-piperazinyl]propyl}naphtho[1,8-cd]isothiazole 1,1-dioxide (1.4 g) is obtained, m.p. 263° C.

Provenance & Evidence