2-cyclopropylethanamine

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:120.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of 2-chloro-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-amine (3.49 g) in ethylene glycol (17 ml) at room temperature was added cyclopropylethylamine (4.69 g). The reaction mixture was heated to 120° C. with reflux condenser overnight, resulting in a yellow/brown solution. The reaction was allowed to cool, taken up in ethyl acetate (100 ml) and washed with water (2×100 ml). The organic layer was separated, dried over magnesium sulfate, filtered and concentrated in vacuo to give a dark brown gum (4.17 g) with reflux condenser overnight resulting in a yellow/brown solution to cool washed with water (2×100 ml) The organic layer was separated dried over magnesium sulfate filtered concentrated in vacuo

Conditions: temp:120.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of 2-chloro-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-amine (3.49 g) in ethylene glycol (17 ml) at room temperature was added cyclopropylethylamine (4.69 g). The reaction mixture was heated to 120° C. with reflux condenser overnight, resulting in a yellow/brown solution. The reaction was allowed to cool, taken up in ethyl acetate (100 ml) and washed with water (2×100 ml). The organic layer was separated, dried over magnesium sulfate, filtered and concentrated in vacuo to give a dark brown gum (4.17 g) with reflux condenser overnight resulting in a yellow/brown solution to cool washed with water (2×100 ml) The organic layer was separated dried over magnesium sulfate filtered concentrated in vacuo

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

Procedure: To a solution of 6-chloropyridazine-3-carboxylic acid (15.8 mmol) in dichloromethane (95 mL) was added diisopropylethylamine (46.7 mmol), 1-hydroxybenzotriazole monohydrate (23.7 mmol) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (23.7 mmol) under nitrogen atmosphere at ambient temperature. The resulting mixture was stirred for 15 minutes and 2-cyclopropylethylamine (20.2 mmol) was added. After stirring for 36 hours at ambient temperature, the reaction mixture was diluted with dichloromethane (100 mL), then washed with water and dried over anhydrous Na2SO4. The solvent was removed in vacuo. Purification via column chromatography (30% ethyl acetate in hexanes) afforded the title compound (8.70 mmol). Yield 55%. After stirring for 36 hours at ambient temperature washed with water dried over anhydrous Na2SO4 The solvent was removed in vacuo Purification via column chromatography (30% ethyl acetate in hexanes)

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

Procedure: To a solution of 6-chloropyridazine-3-carboxylic acid (15.8 mmol) in dichloromethane (95 mL) was added diisopropylethylamine (46.7 mmol), 1-hydroxybenzotriazole monohydrate (23.7 mmol) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (23.7 mmol) under nitrogen atmosphere at ambient temperature. The resulting mixture was stirred for 15 minutes and 2-cyclopropylethylamine (20.2 mmol) was added. After stirring for 36 hours at ambient temperature, the reaction mixture was diluted with dichloromethane (100 mL), then washed with water and dried over anhydrous Na2SO4. The solvent was removed in vacuo. Purification via column chromatography (30% ethyl acetate in hexanes) afforded the title compound (8.70 mmol). Yield 55%. After stirring for 36 hours at ambient temperature washed with water dried over anhydrous Na2SO4 The solvent was removed in vacuo Purification via column chromatography (30% ethyl acetate in hexanes)

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

Procedure: To a solution of 2-(3-bromo-2-oxopyrrolidin-1-yl)-N-(4-fluorobenzyl)-4-methylthiazole-5-carboxamide (0.050 g, 0.12 mmol) in a mixture of tetrahydrofuran and water (1/0.1, v/v) was added potassium carbonate (0.034 g, 0.24 mmol) and 2-cyclopropylethanamine (0.012 g, 0.15 mmol). The reaction mixture was stirred at ambient temperature for 17 hours and concentrated in vacuo. The residue was purified by column chromatography (ethyl acetate/hexanes (3/1)) to afford the title compound as a white solid (0.030 g, 60%): mp 151-152° C. (hexanes/ethyl acetate); 1H NMR (300 MHz, CDCl3) δ 7.32-7.22 (m, 2H), 7.05-6.96 (m, 2H), 6.01 (t, J=5.6 Hz, 1H), 4.51 (d, J=5.6 Hz, 2H), 4.27-4.17 (m, 1H), 3.93-3.81 (m, 1H), 3.76-3.66 (m, 1H), 2.88-2.67 (m, 2H), 2.61 (s, 3H), 2.58-2.44 (m, 1H), 2.10-1.91 (m, 1H), 1.52-1.29 (m, 2H), 0.75-0.59 (m, 1H), 0.49-0.37 (m, 2H), 0.08-0.01 (m, 2H); 13C NMR (75 MHz, CDCl3) δ 173.6, 162.3, 162.2, 155.2, 152.9, 133.7, 129.6, 118.6, 115.6, 59.5, 47.9, 44.9, 43.4, 35.0, 26.9, 17.3, 8.8, 4.4, 4.2; MS (ES+) m/z 417.3 (M+1). concentrated in vacuo The residue was purified by column chromatography (ethyl acetate/hexanes (3/1))

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

Procedure: To a solution of 6-chloropyridazine-3-carboxylic acid (15.8 mmol) in dichloromethane (95 mL) was added diisopropylethylamine (46.7 mmol), 1-hydroxybenzotriazole monohydrate (23.7 mmol) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (23.7 mmol) under nitrogen atmosphere at ambient temperature. The resulting mixture was stirred for 15 minutes and 2-cyclopropylethylamine (20.2 mmol) was added. After stirring for 36 hours at ambient temperature, the reaction mixture was diluted with dichloromethane (100 mL), then washed with water and dried over anhydrous Na2SO4. The solvent was removed in vacuo. Purification via column chromatography (30% ethyl acetate in hexanes) afforded the title compound (8.70 mmol). Yield 55%. After stirring for 36 hours at ambient temperature washed with water dried over anhydrous Na2SO4 The solvent was removed in vacuo Purification via column chromatography (30% ethyl acetate in hexanes)

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

Procedure: To a solution of 6-chloropyridazine-3-carboxylic acid (15.8 mmol) in dichloromethane (95 mL) was added diisopropylethylamine (46.7 mmol), 1-hydroxybenzotriazole monohydrate (23.7 mmol) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (23.7 mmol) under nitrogen atmosphere at ambient temperature. The resulting mixture was stirred for 15 minutes and 2-cyclopropylethylamine (20.2 mmol) was added. After stirring for 36 hours at ambient temperature, the reaction mixture was diluted with dichloromethane (100 mL), then washed with water and dried over anhydrous Na2SO4. The solvent was removed in vacuo. Purification via column chromatography (30% ethyl acetate in hexanes) afforded the title compound (8.70 mmol). Yield 55%. After stirring for 36 hours at ambient temperature washed with water dried over anhydrous Na2SO4 The solvent was removed in vacuo Purification via column chromatography (30% ethyl acetate in hexanes)