(3-bromo-4-methylphenyl)methanamine

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: 6-[({[1,6-Diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)carbonyl]-2-pyridinecarboxylic acid (2 g, 4.42 mmol) was partially dissolved in dichloromethane (100 mL), and HBTU (1.676 g, 4.42 mmol) was added followed sequentially by [(3-bromo-4-methylphenyl)methyl]amine (0.884 g, 4.42 mmol), and TEA (1.232 mL, 8.84 mmol). The mixture was allowed to stir under argon over night at room temperature. The reaction was not complete so additional HBTU (0.167 g, 0.44 mmol) and [(3-bromo-4-methylphenyl)methyl]amine (0.088 g, 0.44 mmol) was added and the mixture was again stirred overnight. The reaction was still not complete so additional HBTU (0.167 g, 0.44 mmol) and [(3-bromo-4-methylphenyl)methyl]amine (0.088 g, 0.44 mmol) was again added and the mixture was stirred overnight. The reaction mixture was taken up in EtOAc (100 mL) and washed 3× with water (50 mL). Solid was recovered and washed with water and ethyl acetate. Drying the solid under vacuum gave N-[(3-bromo-4-methylphenyl)methyl]-N′-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-2,6-pyridinedicarboxamide (1.97 g, 2.95 mmol, 66.7% yield). The ethyl acetate layer was washed with brine, dried over anhydrous Na2SO4, filtered and evaporated to give another batch. This batch was taken up in methylene chloride and absorbed on Isolute® Sorbent (Biotage, Uppsala, Sweden; http://www.biotage.com/) and purified with a Combiflash on an 80 g silica column eluted with 0-10% DCM/MeOH. Product fractions were combined and evaporated to give N-[(3-bromo-4-methylphenyl)methyl]-N′-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-2,6-pyridinedicarboxamide (704 mg, 0.987 mmol, 22.34% yield) as a white solid. LC-MS m/z 435 (M+H)+, 0.94 min (ret time). was added was again added the mixture was stirred overnight washed 3× with water (50 mL) Solid was recovered washed with water and ethyl acetate Drying the solid under vacuum

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 3-bromo-4-methylbenzamide (2.14 g, 10 mmol) in THF (10 mL) was added borane dimethyl sulfide complex (2 mL, 20 mmol) at 0° C. The mixture was then heated to 50° C. for 16 h. Additional borane dimethyl sulfide complex (1 mL, 10 mmol) was added and heating continued at 60° C. for an additional 5 days. The reaction mixture was cooled to room temperature and ethanol was cautiously added. When bubbling ceased, 1N HCl was added until the pH was ˜2. This mixture was stirred at 50° C. for 4 h. The mixture was partitioned between EtOAc and water. The aqueous was washed 3× with EtOAc. The aqueous was then adjusted to pH 10 with 2N NaOH and extracted 3× with EtOAc. The combined organics phases were dried over anhydrous Na2SO4, filtered, and evaporated to afford the title compound. LC-MS m/z 199.8 (M+H)+, 1.01 min (ret time). Additional borane dimethyl sulfide complex (1 mL, 10 mmol) was added heating The reaction mixture was cooled to room temperature When bubbling 1N HCl was added until the pH was ˜2 The mixture was partitioned between EtOAc and water The aqueous was washed 3× with EtOAc extracted 3× with EtOAc The combined organics phases were dried over anhydrous Na2SO4 filtered evaporated

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

Procedure: A mixture of 1-[({[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)carbonyl]cyclopropanecarboxylic acid (600 mg, 1.444 mmol), HBTU (657 mg, 1.733 mmol), Et3N (1006 μL, 7.22 mmol) and 1-(3-bromo-4-methylphenyl)methanamine (318 mg, 1.589 mmol) in DCM was stirred at room temperature overnight. The reaction mixture was quenched with saturated NaHCO3 and extracted with DCM twice. The combined organic layers were washed with brine and then concentrated under vacuum to give the crude residue. It was then purified with a Gilson HPLC (acidic conditions: 0.1% TFA in the solvents), eluting with 10 to 70% CH3CN in water at a flow rate of 20 mL/min. The product fractions were combined and washed with saturated NaHCO3 and extracted with ethyl acetate twice. The combined organic layers were dried over sodium sulfate, filtered and then concentrated under vacuum to give N1-[(3-bromo-4-methylphenyl)methyl]-N1-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-1,1-cyclopropanedicarboxamide (70 mg, 8.11%). LC-MS m/z 597 M+, 0.88 min (ret time). The reaction mixture was quenched with saturated NaHCO3 extracted with DCM twice The combined organic layers were washed with brine concentrated under vacuum to give the crude residue It was then purified with a Gilson HPLC (acidic conditions 0.1% TFA in the solvents), eluting with 10 to 70% CH3CN in water at a flow rate of 20 mL/min washed with saturated NaHCO3 extracted with ethyl acetate twice The combined organic layers were dried over sodium sulfate filtered concentrated under vacuum

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

Procedure: A mixture of 1-[({[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)carbonyl]cyclopropanecarboxylic acid (600 mg, 1.444 mmol), HBTU (657 mg, 1.733 mmol), Et3N (1006 μL, 7.22 mmol) and 1-(3-bromo-4-methylphenyl)methanamine (318 mg, 1.589 mmol) in DCM was stirred at room temperature overnight. The reaction mixture was quenched with saturated NaHCO3 and extracted with DCM twice. The combined organic layers were washed with brine and then concentrated under vacuum to give the crude residue. It was then purified with a Gilson HPLC (acidic conditions: 0.1% TFA in the solvents), eluting with 10 to 70% CH3CN in water at a flow rate of 20 mL/min. The product fractions were combined and washed with saturated NaHCO3 and extracted with ethyl acetate twice. The combined organic layers were dried over sodium sulfate, filtered and then concentrated under vacuum to give N1-[(3-bromo-4-methylphenyl)methyl]-N1-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-1,1-cyclopropanedicarboxamide (70 mg, 8.11%). LC-MS m/z 597 M+, 0.88 min (ret time). The reaction mixture was quenched with saturated NaHCO3 extracted with DCM twice The combined organic layers were washed with brine concentrated under vacuum to give the crude residue It was then purified with a Gilson HPLC (acidic conditions 0.1% TFA in the solvents), eluting with 10 to 70% CH3CN in water at a flow rate of 20 mL/min washed with saturated NaHCO3 extracted with ethyl acetate twice The combined organic layers were dried over sodium sulfate filtered concentrated under vacuum

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 3-bromo-4-methylbenzamide (2.14 g, 10 mmol) in THF (10 mL) was added borane dimethyl sulfide complex (2 mL, 20 mmol) at 0° C. The mixture was then heated to 50° C. for 16 h. Additional borane dimethyl sulfide complex (1 mL, 10 mmol) was added and heating continued at 60° C. for an additional 5 days. The reaction mixture was cooled to room temperature and ethanol was cautiously added. When bubbling ceased, 1N HCl was added until the pH was ˜2. This mixture was stirred at 50° C. for 4 h. The mixture was partitioned between EtOAc and water. The aqueous was washed 3× with EtOAc. The aqueous was then adjusted to pH 10 with 2N NaOH and extracted 3× with EtOAc. The combined organics phases were dried over anhydrous Na2SO4, filtered, and evaporated to afford the title compound. LC-MS m/z 199.8 (M+H)+, 1.01 min (ret time). Additional borane dimethyl sulfide complex (1 mL, 10 mmol) was added heating The reaction mixture was cooled to room temperature When bubbling 1N HCl was added until the pH was ˜2 The mixture was partitioned between EtOAc and water The aqueous was washed 3× with EtOAc extracted 3× with EtOAc The combined organics phases were dried over anhydrous Na2SO4 filtered evaporated

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

Procedure: A mixture of 4-({[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)-4-oxobutanoic acid (1.110 g, 2.75 mmol), 1-(3-bromo-4-methylphenyl)methanamine (0.600 g, 3.00 mmol), HATU (1.331 g, 3.5 mmol) and triethylamine (0.976 ml, 7.0 mmol) in dichloromethane (35 mL) was stirred at room temperature under N2. The reaction mixture was stirred at room temperature overnight. The reaction mixture was diluted with DCM and washed with saturated NaHCO3, followed by saturated NaCl. The organic layer was dried over Na2SO4, and then evaporated to dryness which gave, initially, a glassy gum, but then appeared to very slowly crystallize. The residue was taken up in a small amount of MeOH and sonicated whereupon a crystalline white solid formed and was collected and dried to give N-[(3-bromo-4-methylphenyl)methyl]-N′-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}butanediamide (1.16 g, 72%). LC-MS m/z 585.4 (M+H)+, 0.87 min (ret time). The reaction mixture was stirred at room temperature overnight washed with saturated NaHCO3 The organic layer was dried over Na2SO4 evaporated to dryness which gave to very slowly crystallize sonicated whereupon a crystalline white solid formed was collected dried

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

Procedure: A mixture of 4-({[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)-4-oxobutanoic acid (1.110 g, 2.75 mmol), 1-(3-bromo-4-methylphenyl)methanamine (0.600 g, 3.00 mmol), HATU (1.331 g, 3.5 mmol) and triethylamine (0.976 ml, 7.0 mmol) in dichloromethane (35 mL) was stirred at room temperature under N2. The reaction mixture was stirred at room temperature overnight. The reaction mixture was diluted with DCM and washed with saturated NaHCO3, followed by saturated NaCl. The organic layer was dried over Na2SO4, and then evaporated to dryness which gave, initially, a glassy gum, but then appeared to very slowly crystallize. The residue was taken up in a small amount of MeOH and sonicated whereupon a crystalline white solid formed and was collected and dried to give N-[(3-bromo-4-methylphenyl)methyl]-N′-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}butanediamide (1.16 g, 72%). LC-MS m/z 585.4 (M+H)+, 0.87 min (ret time). The reaction mixture was stirred at room temperature overnight washed with saturated NaHCO3 The organic layer was dried over Na2SO4 evaporated to dryness which gave to very slowly crystallize sonicated whereupon a crystalline white solid formed was collected dried