反应详情

A mixture of 3,4-ethylenedioxyphenylisocyanate (2.0 mmol) (produced as in Example 16) and 3-[4-(3-trifluoromethyl-phenyl) -1-piperazinyl]propanol (580 mg; 2.0 mmol) in toluene (30 ml) was refluxed for 16 h. To the crude product was added 3-[4-(4-chlorophenyl)-1-piperazinyl]propanol (510 mg; 2.0 mmol) in toluene (30 ml) and refluxed for 16 h. The solvent was evaporated and the residue resuspended in ethyl acetate, filtered and evaporated to dryness. The residue was submitted to flash chromatography on silica gel 60 eluting with toluene/ethyl acetate (1:1) graduated to toluene/ethyl acetate (1:3). The product was taken up in ethanol, which was treated with hydrogen chloride in ether to give 690 mg of the title compound. M.p. 242°-245° C. MS (70 eV): m/z 465 (34%, M+), 450 (11), 288 (25), 265 (21), 243 (100), 177 (61), 70 (79).

1. temperaturewas refluxed for 16 h
2. temperaturerefluxed for 16 h
3. customThe solvent was evaporated
4. filtrationfiltered
5. customevaporated to dryness
6. additionwhich was treated with hydrogen chloride in ether