piperidine-1-carboxamide

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

Procedure: 2[[3-(4-Chlorophenyl)-propyl]-succinic acid 4-tert-butyl ester (WO 95/04033) (5 g, 15.3 mmol) was converted to the corresponding piperidine amide by the method described previously (Example 1, Step G). Yield 4.01 g (67%). 1H-NMR: δ (CDCl3), 7.23 (2H, d, J=8.3 Hz), 7.08 (2H, d, J=8.3 Hz), 3.68-3.42 (4H, m), 3.12 (1H, m), 2.69 (1H, dd, J=8.4, 16.4 Hz), 2.62-2.49 (2H, m), 2.29 (1H, dd, J=5.6, 16.4 Hz), 1.72-1.33 (10H, m) and 1.41 (9H, s).

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

Procedure: Combine N-(t-butoxycarbonyl)-S-methionine (1.50 g, 6.0 mmol), piperidine (0.51 g, 6.0 mmol) and HOBT (0.91 g, 6.0 mmol) in DMF (40 ml). Add DEC (1.15 g, 6.0 mmol). Stir 5 hours, concentrate in vacuo, and partition between EtOAc and H2O. Wash with aqueous NaHCO3, dry, and concentrate to obtain the piperidine amide as a colorless oil (TLC single spot Rf =0.6 in 5% MeOH/CH2Cl2). concentrate in vacuo partition between EtOAc and H2O Wash with aqueous NaHCO3 dry concentrate

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

Procedure: Combine N-(t-butoxycarbonyl)-S-methionine (1.50 g, 6.0 mmol), piperidine (0.51 g, 6.0 mmol) and HOBT (0.91 g, 6.0 mmol) in DMF (40 ml). Add DEC (1.15 g, 6.0 mmol). Stir 5 hours, concentrate in vacuo, and partition between EtOAc and H2O. Wash with aqueous NaHCO3, dry, and concentrate to obtain the piperidine amide as a colorless oil (TLC single spot Rf =0.6 in 5% MeOH/CH2Cl2). concentrate in vacuo partition between EtOAc and H2O Wash with aqueous NaHCO3 dry concentrate

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

Procedure: Combine N-(t-butoxycarbonyl)-S-methionine (1.50 g, 6.0 mmol), piperidine (0.51 g, 6.0 mmol) and HOBT (0.91 g, 6.0 mmol) in DMF (40 ml). Add DEC (1.15 g, 6.0 mmol). Stir 5 hours, concentrate in vacuo, and partition between EtOAc and H2O. Wash with aqueous NaHCO3, dry, and concentrate to obtain the piperidine amide as a colorless oil (TLC single spot Rf =0.6 in 5% MeOH/CH2Cl2). concentrate in vacuo partition between EtOAc and H2O Wash with aqueous NaHCO3 dry concentrate

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

Procedure: A stirred mixture of 4-[1-[4-(trifluoromethyl)phenyl]-1H-indazol-3yl]piperidine-1-carbonitrile of Example 77 (15 g, 0.041 moles) and 25% H2SO4 (100 ml) was refluxed for 20 hours. The mixture was cooled, poured into H2O, and basified with a 25% NaOH solution. The product was extracted (dichloromethane), dried (MgSO4), and concentrated to yield 13 g (93%) of 1-[4-(trifluoromethyl)phenyl]-3-(4-piperidinyl)-1H-indazole as an oil. To a stirred suspension of the indazole (4.0 g, 0.012 moles) in toluene (60 ml) was added phenyl isocyanate (1.38 ml, 0.013 moles). The reaction temperature rose to 35° C. and the product precipitated from the solution. The product was collected and recrystallized twice from toluene to yield 3.57 g (66%) of N-phenyl-4-[1-(4-trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carboxamide, m.p. 190°-192° C. rose to 35° C. the product precipitated from the solution The product was collected recrystallized twice from toluene

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

Procedure: A stirred mixture of 4-[1-[4-(trifluoromethyl)phenyl]-1H-indazol-3yl]piperidine-1-carbonitrile of Example 77 (15 g, 0.041 moles) and 25% H2SO4 (100 ml) was refluxed for 20 hours. The mixture was cooled, poured into H2O, and basified with a 25% NaOH solution. The product was extracted (dichloromethane), dried (MgSO4), and concentrated to yield 13 g (93%) of 1-[4-(trifluoromethyl)phenyl]-3-(4-piperidinyl)-1H-indazole as an oil. To a stirred suspension of the indazole (4.0 g, 0.012 moles) in toluene (60 ml) was added phenyl isocyanate (1.38 ml, 0.013 moles). The reaction temperature rose to 35° C. and the product precipitated from the solution. The product was collected and recrystallized twice from toluene to yield 3.57 g (66%) of N-phenyl-4-[1-(4-trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carboxamide, m.p. 190°-192° C. rose to 35° C. the product precipitated from the solution The product was collected recrystallized twice from toluene

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

Procedure: A stirred mixture of 4-[1-[4-(trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carbonitrile of Example 77 (15 g, 0.041 moles) and 25% H2SO4 (100 ml) was refluxed for 20 hours. The mixture was cooled, poured into H2O, and basified with a 25% NaOH solution. The product was extracted (dichloromethane), dried (MgSO4), and concentrated to yield 13 g (93%) of 1-[4-(trifluoromethyl)phenyl]-3-(4-piperidinyl)-1H-indazole as an oil. To a stirred suspension of the indazole (4.0 g, 0.012 moles) in toluene (60 ml) was added phenyl isocyanate (1.38 ml, 0.013 moles). The reaction temperature rose to 35° C. and the product precipitated from the solution. The product was collected and recrystallized twice from toluene to yield 3.57 g (66%) of N-phenyl-4-[1-(4-trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carboxamide, m.p. 190°-192° C. rose to 35° C. the product precipitated from the solution The product was collected recrystallized twice from toluene

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

Procedure: A stirred mixture of 4-[1-[4-(trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carbonitrile of Example 77 (15 g 0.041 moles) and 25% H2SO4 (100 ml) was refluxed for 20 hours. The mixture was cooled, poured into H2O, and basified with a 25% NaOH solution. The product was extracted (dichloromethane), dried (MgSO4), and concentrated to yield 13 g (93%) of 1-[4-(trifluoromethyl)phenyl]-3-(4-piperidinyl)-1H-indazole as an oil. To a stirred suspension of the indazole (4.0 g, 0.012 moles) in toluene (60 ml) was added phenyl isocyanate (1.38 ml, 0.013 moles). The reaction temperature rose to 35° C. and the product precipitated from the solution. The product was collected and recrystallized twice from toluene to yield 3.57 g (66%) of N-phenyl-4-[1-(4-trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carboxamide, m.p. 190°-192 ° C. rose to 35° C. the product precipitated from the solution The product was collected recrystallized twice from toluene

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

Procedure: A stirred mixture of 4-[1-[4-(trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carbonitrile of Example 77 (15 g 0.041 moles) and 25% H2SO4 (100 ml) was refluxed for 20 hours. The mixture was cooled, poured into H2O, and basified with a 25% NaOH solution. The product was extracted (dichloromethane), dried (MgSO4), and concentrated to yield 13 g (93%) of 1-[4-(trifluoromethyl)phenyl]-3-(4-piperidinyl)-1H-indazole as an oil. To a stirred suspension of the indazole (4.0 g, 0.012 moles) in toluene (60 ml) was added phenyl isocyanate (1.38 ml, 0.013 moles). The reaction temperature rose to 35° C. and the product precipitated from the solution. The product was collected and recrystallized twice from toluene to yield 3.57 g (66%) of N-phenyl-4-[1-(4-trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carboxamide, m.p. 190°-192 ° C. rose to 35° C. the product precipitated from the solution The product was collected recrystallized twice from toluene

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

Procedure: A stirred mixture of 4-[1-[4-(trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carbonitrile of Example 77 (15 g, 0.041 moles) and 25% H2SO4 (100 ml) was refluxed for 20 hours. The mixture was cooled, poured into H2O, and basified with a 25% NaOH solution. The product was extracted (dichloromethane), dried (MgSO4), and concentrated to yield 13 g (93%) of 1-[4-(trifluoromethyl)phenyl]-3-(4-piperidinyl)-1H-indazole as an oil. To a stirred suspension of the indazole (4.0 g, 0.012 moles) in toluene (60 ml) was added phenyl isocyanate (1.38 ml, 0.013 moles). The reaction temperature rose to 35° C. and the product precipitated from the solution. The product was collected and recrystallized twice from toluene to yield 3.57 g (66%) of N-phenyl-4-[1-(4-trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carboxamide, m.p. 190°-192° C. rose to 35° C. the product precipitated from the solution The product was collected recrystallized twice from toluene

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

Procedure: A stirred mixture of 4-[1-[4-(trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carbonitrile of Example 77 (15 g, 0.041 moles) and 25% H2SO4 (100 ml) was refluxed for 20 hours. The mixture was cooled, poured into H2O, and basified with a 25% NaOH solution. The product was extracted (dichloromethane), dried (MgSO4), and concentrated to yield 13 g (93%) of 1-[4-(trifluoromethyl)phenyl]-3-(4-piperidinyl)-1H-indazole as an oil. To a stirred suspension of the indazole (4.0 g, 0.012 moles) in toluene (60 ml) was added phenyl isocyanate (1.38 ml, 0.013 moles). The reaction temperature rose to 35° C. and the product precipitated from the solution. The product was collected and recrystallized twice from toluene to yield 3.57 g (66%) of N-phenyl-4-[1-(4-trifluoromethyl)phenyl]-1H-indazol-3-yl]piperidine-1-carboxamide, m.p. 190°-192° C. rose to 35° C. the product precipitated from the solution The product was collected recrystallized twice from toluene

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

Procedure: 2[[3-(4-Chlorophenyl)-propyl]-succinic acid 4-tert-butyl ester (WO 95/04033) (5 g, 15.3 mmol) was converted to the corresponding piperidine amide by the method described previously (Example 1, Step G). Yield 4.01 g (67%). 1H-NMR: δ (CDCl3), 7.23 (2H, d, J=8.3 Hz), 7.08 (2H, d, J=8.3 Hz), 3.68-3.42 (4H, m), 3.12 (1H, m), 2.69 (1H, dd, J=8.4, 16.4 Hz), 2.62-2.49 (2H, m), 2.29 (1H, dd, J=5.6, 16.4 Hz), 1.72-1.33 (10H, m) and 1.41 (9H, s).