2-Chlorobenzothiazole → Zolantidine

Participants

Reaction Steps

3-[3-(Piperidinomethyl)phenoxy]propylamine (7.0 g) and 2-chlorobenzthiazole (5.26 g) were dissolved in dichloromethane to ensure good mixing. The solvent was then evaporated and the residue fused at 130° C. for 16 hours. The cooled reaction mixture was subjected to chromatography on silica (chloroform:methanol 10:1) to give the title compound as an oil (8.5 g). This was treated with maleic acid in isopropanol to give 2-[3-[3- [3-(piperidinomethyl)phenoxy]propylamino]benzthiazole dimaleate, m.p. 113° C. (decomp) (recrystallised from ethylacetate and isopropanol-ethyl acetate).

Provenance & Evidence