Sodium Hydroxide → 1-[3-(2-chloro-10H-phenothiazin-10-yl)propyl]-4-[2-[4-[4-(1-methylethyl)aminobutoxy]phenoxy]ethyl]piperazine trihydrochloride

Participants

Reaction Steps

A solution of 1-[3-(2-chloro-10H-phenothiazin-10-yl)propyl]-4-(2-chloroethyl)piperazine (3.8 g) and 4-[4-(1-methylethyl)aminobutoxy]phenol (2.0 g), in 100 ml dimethylsulfoxide was reacted with sodium hydroxide (0.4 g) in 3 ml water under the conditions described in method A. The crude amine, extracted into ethyl acetate, was converted to the trihydrochloride salt by addition of excess hydrogen chloride in ethyl acetate to the dried extract. The crude salt was triturated with a small amount of hot methanol, then was crystallized from methanol-ethyl acetate to give 2.0 g of 1-[3-(2-chloro-10H-phenothiazin-10-yl)propyl]-4-[2-[4-[4-(1-methylethyl)aminobutoxy]phenoxy]ethyl]piperazine trihydrochloride, mp 220°-221°.

Provenance & Evidence