2-(dimethylamino)acetohydrazide

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

Procedure: To a solution of (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid 1 (0.25 g, 0.90 mmol) in dry DCM (40 mL) were added 2-(dimethylamino)acetohydrazide 240 (0.32 g, 1.68 mmol), 1-hydroxybenzotriazole (0.19 g, 1.35 mmol), 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.26 g, 1.35 mmol) and 4-(dimethylamino)pyridine (0.40 g, 3.36 mmol) at room temperature. The reaction mixture was stirred at room temperature overnight and concentrated under vacuum. The residue was purified by column chromatography to give (2R,5S)-6-(benzyloxy)-N′-[(dimethylamino)acetyl]-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carbohydrazide 241 (0.15 g, 44.5%) as a white solid. concentrated under vacuum The residue was purified by column chromatography

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

Procedure: To a solution of (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid 1 (0.25 g, 0.90 mmol) in dry DCM (40 mL) were added 2-(dimethylamino)acetohydrazide 240 (0.32 g, 1.68 mmol), 1-hydroxybenzotriazole (0.19 g, 1.35 mmol), 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.26 g, 1.35 mmol) and 4-(dimethylamino)pyridine (0.40 g, 3.36 mmol) at room temperature. The reaction mixture was stirred at room temperature overnight and concentrated under vacuum. The residue was purified by column chromatography to give (2R,5S)-6-(benzyloxy)-N′-[(dimethylamino)acetyl]-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carbohydrazide 241 (0.15 g, 44.5%) as a white solid. concentrated under vacuum The residue was purified by column chromatography

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

Procedure: To a solution of (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid 1 (0.25 g, 0.90 mmol) in dry DCM (40 mL) were added 2-(dimethylamino)acetohydrazide 240 (0.32 g, 1.68 mmol), 1-hydroxybenzotriazole (0.19 g, 1.35 mmol), 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.26 g, 1.35 mmol) and 4-(dimethylamino)pyridine (0.40 g, 3.36 mmol) at room temperature. The reaction mixture was stirred at room temperature overnight and concentrated under vacuum. The residue was purified by column chromatography to give (2R,5S)-6-(benzyloxy)-N′-[(dimethylamino)acetyl]-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carbohydrazide 241 (0.15 g, 44.5%) as a white solid. concentrated under vacuum The residue was purified by column chromatography

Conditions: temp:95.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of ethoxy[3-(6-methoxy(2-naphthyl))(1H-indazol-5-yl)]methanimine (0.430 g, 1.13 mmol) in methanol (5 mL) was added N-amino-2-(dimethylamino)acetamide (0.396 g, 3.38 mmol) and 4.3 M sodium methoxide (0.578 mL, 2.49 mmol). The mixture was heated in a sealed tube at 95° C. for 16 h. The solvent was removed using a rotary evaporator and gave a solid residue. Purification of the residue by preparative HPLC (10-80%, acetonitrile/water) gave the title compound (0.025 g, 5% yield): 1H NMR (DMSO-d6) δ 13.95 (br s, 1H), 13.40 (br s, 1H), 8.73 (s, 1H), 8.44 (s, 1H), 8.09 (t, 2H), 8.00 (t, 2H), 7.68 (d, 1H), 7.39 (d, 1H), 7.21 (dd, 1H), 3.90 (s, 3H), 3.60 (s, 2H), 2.22 (s, 6H); ES-MS (m/z) 399 [M+1]+. The solvent was removed a rotary evaporator gave a solid residue Purification of the residue by preparative HPLC (10-80%, acetonitrile/water)

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

Procedure: The title compound was prepared according to the procedure of Example 367C using N-cyclobutyl(3-[5-(ethoxyiminomethyl)(1H-indazol-3-yl)]phenyl)carboxamide.2HCl (460 mg, 1.06 mmol), N-amino-2-(dimethylamino) acetamide (372 mg, 3.17 mmol) and sodium methoxide (608 μL of a 25% w/w in methanol) in anhydrous methanol (7.0 mL) with a reaction time of 44 h. Purification of the residue by flash chromatography on silica gel with 50% methanol in ethyl acetate gave the desired product as a pale yellow solid. The residue was dissolved in a minimum amount of anhydrous methanol and excess 1.0 N HCl in anhydrous ethyl ether was added dropwise to precipitate the desired product as the bis-hydrochloride salt. The product was collected and dried under vacuum to afford the title compound (27 mg, 5% yield) as a light yellow powder. 1H NMR (DMSO-d6) δ 10.6 (br s, 1H), 8.89 (d, 1H), 8.84 (s, 1H), 8.4 (s, 1H), 8.17 (d, 1H), 8.12 (d, 1H), 7.91 (d, 1H), 7.76 (d, 1H), 7.63 (t, 1H), 4.5-4.4 (m, 1H), 4.44 (s, 2H), 2.83 (s, 6H), 2.23-2.0 (m, 4H), 1.72-1.62 (m, 2H); ES-MS (m/z) 416 [M+H]+ (HCl salt not detected). The title compound was prepared with a reaction time of 44 h Purification of the residue by flash chromatography on silica gel with 50% methanol in ethyl acetate

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

Procedure: The title compound was prepared according to the procedure of Example 367 C using N-cyclopropyl(3-[5-(ethoxyiminomethyl)(1H-indazol-3-yl)]phenyl)carboxamide.2HCl (377 mg, 0.89 mmol), N-amino-2-(dimethylamino) acetamide (315 mg, 2.69 mmol) and sodium methoxide (515 μL of a 25% w/w in methanol) in anhydrous methanol (5.0 mL) with a reaction time of 24 h. Purification of the residue by flash chromatography on silica gel with 50% methanol in ethyl acetate gave the desired product as a light orange solid. Further purification by preparatory TLC using 50% methanol in ethyl acetate afforded the title compound (145 mg, 40% yield) as an off-white powder. 1H NMR (DMSO-d6) δ 8.8 (br d, 1H), 8.7 (s, 1H), 8.4 (s, 1H), 8.14-8.05 (m, 2H), 7.84 (d, 1H), 7.7-7.6 (m, 2H), 3.55 (s, 2H), 2.92-2.85 (m, 1H), 2.2 (s, 6H); ES-MS (m/z) 402 [M+H]+. The title compound was prepared with a reaction time of 24 h Purification of the residue by flash chromatography on silica gel with 50% methanol in ethyl acetate

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

Procedure: The title compound was prepared according to the procedure of Example 367 C using (3-[5-(ethoxyiminomethyl)(1H-indazol-3-yl)]phenyl)-N-indan-2-ylcarboxamide.2HCl (360 mg, 0.72 mmol), N-amino-2-(dimethylamino) acetamide (254 mg, 2.17 mmol) and sodium methoxide (415 μL of a 25% w/w in methanol) in anhydrous methanol (4.0 mL) with a reaction time of 48 h. Purification of the residue by preparatory TLC using 50% ethyl acetate in methanol gave the desired product which was further purified by precipitation from methanol and ethyl acetate with hexanes and ethyl ether to give the title compound (86 mg, 25% yield) as a colorless powder 1H NMR (DMSO-d6) δ 13.9 (br s, 1H), 13.4 (br s, 1H), 8.85 (d, 1H), 8.6 (br s, 1H), 8.45 (s, 1H), 8.1-8.0 (m, 2H), 7.7-7.6 (m, 2H), 7.3-7.1 (m, 4H), 4.8-4.7 (m, 1H), 3.6 (br s, 2H), 3.25 (dd, 2H), 3.0 (dd, 2H), 2.2 (s, 6H); ES-MS (m/z) 478 [M+H]+. The title compound was prepared with a reaction time of 48 h Purification of the residue by preparatory TLC

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

Procedure: Prepared according to the procedure of Example 367 C using (3-[5-(ethoxyiminomethyl)(1H-indazol-3-yl)]phenyl)-N-(4-fluorophenyl)carboxamide.2HCl (1.50 g, 3.15 mmol), N-amino-2-(dimethylamino) acetamide (1.2 g, 10.33 mmol) and sodium methoxide (1.8 mL of a 25% w/w in methanol) in anhydrous methanol (20.0 mL) with a reaction time of 1.5 days. Purification by flash chromatography on silica gel using 50% methanol in ethyl acetate afforded a solid which was dissolved in anhydrous methanol and treated with anhydrous hydrogen chloride gas for 10 min at 0° C. After stirring at ambient temperature for 5 min anhydrous ethyl acetate was added to precipitate the desired product which was collected on a sintered glass funnel, washed with methanol and ethyl acetate and dried under vacuum to give the title compound (267 mg, 50% yield) as a light yellow solid 1H NMR (DMSO-d6) δ 13.5 (br s, 1H), 10.5 (s, 1H), 8.5 (s, 1H), 8.2 (br d, 1H), 8.1 (d, 1H), 8.0 (d, 1H), 7.84 (dd, 2H), 7.75-7.6 (m, 2H), 7.2 (t, 2H), 3.6 (bs, 2H), 2.2 (s, 6H), ES-MS (m/z) 456 [M+H]+. Prepared with a reaction time of 1.5 days Purification by flash chromatography on silica gel using 50% methanol in ethyl acetate afforded a solid which was added to precipitate the desired product which was collected on a sintered glass funnel washed with methanol and ethyl acetate dried under vacuum

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of 3-benzo[d]furan-2-yl-1-perhydro-2H-pyran-2-yl-1H-indazole-5-carbonitrile (167 mg, 0.49 mmol) and N-amino-2-(dimethylamino)acetamide (171 mg, 1.46 mmol) in anhydrous methanol (1.0 mL) in a screw-top pressure tube was added sodium methoxide (445 μL of a 25% w/w in methanol). The tube was sealed and heated in a 100° C. oil bath for 21 h. An additional amount of N-amino-2-(dimethylamino) acetamide (171 mg, 1.46 mmol) was added and the reaction heated for an additional 2 days. The reaction was cooled, evaporated to dryness and partitioned between ethyl acetate and satd. ammonium chloride. The organic layer was separated, washed with brine, dried over MgSO4 and concentrated in vacuo to give a yellow solid. Purification of the residue by flash chromatography on silica gel using 5% methanol in dichloromethane then 20% methanol in dichloromethane gave the desired product (15 mg, 7% yield) as a pale yellow foam. ES-MS (m/z) 443 [M+H]+. The tube was sealed the reaction heated for an additional 2 days The reaction was cooled evaporated to dryness partitioned between ethyl acetate and satd The organic layer was separated washed with brine dried over MgSO4 concentrated in vacuo to give a yellow solid Purification of the residue by flash chromatography on silica gel using 5% methanol in dichloromethane

Conditions: temp:105.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of (3-[5-(ethoxyiminomethyl)(1H-indazol-3-yl)]phenyl)-N-(2-piperidylethyl)carboxamide.3HCl (412 mg, 0.78 mmol) and N-amino-2-(dimethylamino)acetamide (275 mg, 2.35 mmol) in anhydrous methanol (5.0 mL) in a screw-top pressure tube was added sodium methoxide (626 mL of a 25% w/w in methanol). The tube was sealed, heated in a 105° C. oil bath for 48 h and then concentrated to dryness. Purification of the residue by preparatory TLC using 40% ethyl acetate in methanol gave the desired product after precipitation from methanol/ethyl acetate with ethyl ether (12 mg, 3% yield) 1H NMR (DMSO-d6) δ 13.7 (br s, 1H), 8.7 (br s, 2H), 8.4 (s, 1H), 8.1-8.0 (m, 2H), 7.85 (br d, 1H), 7.7-7.6 (m, 2H), 3.6 (s, 2H), 3.5-3.3 (m, 2H), 2.5-2.2 (m, 6H), 2.2 (s, 6H), 1.6-1.3 (m, 6H); ES-MS (m/z) 473 [M+H]+. The tube was sealed concentrated to dryness Purification of the residue by preparatory TLC

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

Procedure: The title compound was prepared according to example Example 329 C using N-{3-[5-(ethoxyiminomethyl)(1H-indazol-3-yl)]phenyl}-3-pyridylcarboxamide hydrochloride (0.400 g, 0.873 mmol), N-amino-2-(dimethylamino)acetamide (0.306 g, 2.62 mmol) and sodium methoxide in methanol (0.609 mL, 4.37 M). The title compound was isolated after purification by preparative HPLC (0.037 g, 10% yield): 1H NMR (CD3OD) δ 9.16 (dd, 1H), 8.79 (d, 1H), 8.75 (dd, 1H), 8.43 (dt, 1H), 8.39 (s, 1H), 8.09 (dd, 1H), 7.89-7.83 (m, 2H), 7.72 (d, 1H), 7.65-7.56 (m, 2H), 4.06 (br s, 2H), 2.61 (br s, 6H); ES-MS (m/z) 439 [M+H]+. The title compound was prepared

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

Procedure: The title compound was prepared according to example Example 329 C using N-{3-[5-(ethoxyiminomethyl)(1H-indazol-3-yl)]phenyl}-3-methylbutanamide hydrochloride (0.400 g, 0.997 mmol), N-amino-2-(dimethylamino)acetamide (0.350 g, 2.99 mmol) and sodium methoxide in methanol (0.348 mL, 4.37 M). The title compound was isolated after purification by preparative HPLC (0.074 g, 18% yield): 1H NMR (CD3OD) δ 8.73 (s, 1H), 8.19 (s, 1H), 8.08 (d, 1H), 7.75 (t, 2H), 7.69 (d, 1H), 7.51 (t, 1H), 3.81 (s, 2H), 2.45 (s, 6H), 2.3 (d, 2H), 2.21 (m, 1H), 1.04 (d, 6H); ES-MS (m/z) 418 [M+H]+. The title compound was prepared