1-ethynyl-2,4-difluorobenzene

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

Procedure: The titled compound was prepared according to Method CB using the product of Example 95B (79 mg, 0.5 mmol) and 1-ethynyl-2,4-difluorobenzene (Aldrich, 68 mg, 0.5 mmol). 1H NMR (300 MHz, CDCl3) δ 6.93-7.14 (m, 3H), 7.47 (d, J=7.5 Hz, 1H), 8.02 (td, J=8.6, 6.3 Hz, 1H), 8.18 (dd, J=8.1, 2.7 Hz, 1H), 8.86 (dd, J=2.5, 0.8 Hz, 1H) ppm; MS (DCI/NH3) m/z 293 (M+H)+, 295 (M+H)+.

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

Procedure: The titled compound was prepared according to Method CB using the product of Example 69B (57 mg, 0.3 mmol) and 1-ethynyl-2,4-difluorobenzene (Aldrich, 41 mg, 0.3 mmol). 1H NMR (300 MHz, DMSO-d6) δ 7.30-7.43 (m, 1H), 7.61 (ddd, J=11.4, 9.2, 2.8 Hz, 1H), 7.68 (d, J=3.2 Hz, 1H), 8.07 (td, J=8.5, 6.3 Hz, 1H), 8.54 (t, J=2.0 Hz, 1H), 8.80 (d, J=2.4 Hz, 1H), 9.15 (d, J=2.0 Hz, 1H) ppm; MS (DCI/NH3) m/z 293 (M+H)+, 295 (M+H)+.

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

Procedure: The titled compound was prepared as the hydrochloride salt according to Method CB using the product of Example 44B (79 mg, 0.5 mmol) and 1-ethynyl-2,4-difluorobenzene (Aldrich, 69 mg, 0.5 mmol). 1H NMR (300 MHz, DMSO-d6) δ 7.30-7.42 (m, 1H), 7.61 (ddd, J=11.5, 9.1, 2.4 Hz, 1H), 7.68 (d, J=3.2 Hz, 1H), 8.08 (td, J=8.6, 6.5 Hz, 1H), 9.35 (s, 1H), 9.39 (s, 2H) ppm; MS (DCI/NH3) m/z 260 (M+H)+.

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

Procedure: The titled compound was prepared as the hydrochloride salt according to Method CB using the product of Example 1A (78 mg, 0.5 mmol) and 1-ethynyl-2,4-difluorobenzene (Aldrich, 69 mg, 0.5 mmol). 1H NMR (300 MHz, DMSO-d6) δ 7.29-7.43 (m, 1H), 7.53-7.65 (m, 2H), 7.69 (dd, J=7.5, 4.7 Hz, 1H), 8.08 (td, J=8.7, 6.3 Hz, 1H), 8.48 (dt, J=7.9, 2.0 Hz, 1H), 8.78 (dd, J=4.9, 1.5 Hz, 1H), 9.23 (d, J=1.7 Hz, 1H) ppm; MS (DCI/NH3) m/z 259 (M+H)+.

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

Procedure: The title compound was synthesized according to the procedure described for the preparation of Example 160 using 83 (100 mg, 0.43 mmol) and 1-ethynyl-2,4-difluorobenzene (90 mg, 0.65 mmol) to provide 252 (91 mg, 63% yield) as a tan solid. LC-MS (M+H=333 obsd.=333). The title compound was synthesized

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

Procedure: Prepared as described for 3,4-bis(benzyloxy)-6-(phenylethynyl)pyridazine (Intermediate 2) from 3,4-bis(benzyloxy)-6-chloropyridazine (Intermediate 1) and 1-ethynyl-2,4-difluorobenzene. Prepared

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

Procedure: Prepared as described for 3,4-bis(benzyloxy)-6-(phenylethynyl)pyridazine (Intermediate 2) from 3,4-bis(benzyloxy)-6-chloropyridazine (Intermediate 1) and 1-ethynyl-2,4-difluorobenzene. Prepared

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

Procedure: Combine 5-bromo-3-(2,2-dimethyl-propyl)-3H-imidazo[4,5-b]pyridin-2-ylamine (30.00 g, 105.94 mmol), Et3N (60 mL), and Pd(OAc)2[P(Ph)3]2 (3.97 g, 5.30 mmol) in toluene (150 mL) and heat the resulting mixture to ˜65° C. under nitrogen. Add 1-ethynyl-2,4-difluoro-benzene (21.95 g, 158.92 mmol) in toluene (30 mL) dropwise to the above mixture, and then heat the resulting reaction mixture at 80° C. for 3 h. Cool the reaction to 25° C. and quench with saturated aqueous NH4Cl (300 mL). Stir the resulting reaction mixture at room temperature for 20 minutes, then filter, washing the solid with H2O and drying under vacuum filtration for 30 minutes. Slurry the solid in MTBE (200 mL), then filter and rinse with MTBE (50 mL). Dry the recovered solid under vacuum filtration to provide 14.47 g of the title compound as a light-yellow solid. the resulting reaction mixture at 80° C. for 3 h Cool the reaction to 25° C. quench with saturated aqueous NH4Cl (300 mL) the resulting reaction mixture at room temperature for 20 minutes filter washing the solid with H2O drying under vacuum filtration for 30 minutes filter rinse with MTBE (50 mL) Dry the recovered solid under vacuum filtration

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

Procedure: The titled compound was prepared according to Method CB using the product of Example 95B (79 mg, 0.5 mmol) and 1-ethynyl-2,4-difluorobenzene (Aldrich, 68 mg, 0.5 mmol). 1H NMR (300 MHz, CDCl3) δ 6.93-7.14 (m, 3H), 7.47 (d, J=7.5 Hz, 1H), 8.02 (td, J=8.6, 6.3 Hz, 1H), 8.18 (dd, J=8.1, 2.7 Hz, 1H), 8.86 (dd, J=2.5, 0.8 Hz, 1H) ppm; MS (DCI/NH3) m/z 293 (M+H)+, 295 (M+H)+.

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

Procedure: The titled compound was prepared according to Method CB using the product of Example 95B (79 mg, 0.5 mmol) and 1-ethynyl-2,4-difluorobenzene (Aldrich, 68 mg, 0.5 mmol). 1H NMR (300 MHz, CDCl3) δ 6.93-7.14 (m, 3H), 7.47 (d, J=7.5 Hz, 1H), 8.02 (td, J=8.6, 6.3 Hz, 1H), 8.18 (dd, J=8.1, 2.7 Hz, 1H), 8.86 (dd, J=2.5, 0.8 Hz, 1H) ppm; MS (DCI/NH3) m/z 293 (M+H)+, 295 (M+H)+.

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

Procedure: The titled compound was prepared according to Method CB using the product of Example 69B (57 mg, 0.3 mmol) and 1-ethynyl-2,4-difluorobenzene (Aldrich, 41 mg, 0.3 mmol). 1H NMR (300 MHz, DMSO-d6) δ 7.30-7.43 (m, 1H), 7.61 (ddd, J=11.4, 9.2, 2.8 Hz, 1H), 7.68 (d, J=3.2 Hz, 1H), 8.07 (td, J=8.5, 6.3 Hz, 1H), 8.54 (t, J=2.0 Hz, 1H), 8.80 (d, J=2.4 Hz, 1H), 9.15 (d, J=2.0 Hz, 1H) ppm; MS (DCI/NH3) m/z 293 (M+H)+, 295 (M+H)+.

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

Procedure: The titled compound was prepared as the hydrochloride salt according to Method CB using the product of Example 44B (79 mg, 0.5 mmol) and 1-ethynyl-2,4-difluorobenzene (Aldrich, 69 mg, 0.5 mmol). 1H NMR (300 MHz, DMSO-d6) δ 7.30-7.42 (m, 1H), 7.61 (ddd, J=11.5, 9.1, 2.4 Hz, 1H), 7.68 (d, J=3.2 Hz, 1H), 8.08 (td, J=8.6, 6.5 Hz, 1H), 9.35 (s, 1H), 9.39 (s, 2H) ppm; MS (DCI/NH3) m/z 260 (M+H)+.