2-piperazin-1-yl-1-piperidin-1-ylethanone

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared from 1-tert-butyloxycarbonyl-piperazine, chloroacetylchloride and piperidine in an analogous manner as described in example 21.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a manner analogous to the method described in examples 8, (4S,5R)-2-(6-tert-butyl-4-ethoxy-pyridin-3-yl)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-imidazole-1-carbonyl chloride (example 51) was coupled with 2-piperazin-1-yl-1-piperidin-1-yl-ethanone (Oakwood) to give the title compound. HR-MS (ES, m/z) calculated for C40H51Cl2N6O3 [(M+H)+] 733.3394, observed 733.3392.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 2-piperazin-1-yl-1-piperidin-1-ylethanone and 6-chloro-3-(trifluoromethyl)-[1,2,4]triazolo[4,3-b]pyridazine was allowed to react by General Synthetic Method 3. The crude product was purified by hplc using a Waters XTerra C18 column (5μ silica, 19 mm diameter, 100 mm length) eluted with decreasingly polar mixtures of water (containing 0.1% aqueous ammonia) and acetonitrile as eluents to give 1-piperidin-1-yl-2-[4-[3-(trifluoromethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperazin-1-yl]ethanone. to react by General Synthetic Method 3 The crude product was purified by hplc eluted with decreasingly polar mixtures of water (containing 0.1% aqueous ammonia) and acetonitrile as eluents