methyl N-aminocarbamodithioate

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a 250 mL round-bottom flask containing hydrazinecarbodithioic acid methyl ester (2.38 g, 1.95 mmol) in EtOH (100 mL) was added 4-[1-(4-trifluoromethoxyphenyl)-1H-[1,2,4]triazol-3-yl]-benzaldehyde (5.00 g, 1.50 mmol). The vessel was heated at 80° C. for 3 h before being diluted with H2O (300 mL) and cooled to 0° C. The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%) mp 204-206° C.; 1H NMR (400 MHz, DMSO-d6) δ 13.39 (s, 1H), 9.43 (s, 1H), 8.38 (s, 1H), 8.21 (d, J=8.3 Hz, 2H), 8.09 (d, J=8.4 Hz, 2H), 7.88 (d, J=8.4 Hz, 2H), 7.62 (d, J=8.3 Hz, 2H), 2.57 (s, 3H); ESIMS m/z 438 (M+H). cooled to 0° C The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%) mp 204-206° C.

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a 250 mL round-bottom flask containing hydrazinecarbodithioic acid methyl ester (2.38 g, 1.95 mmol) in EtOH (100 mL) was added 4-[1-(4-trifluoromethoxyphenyl)-1H-[1,2,4]triazol-3-yl]-benzaldehyde (5.00 g, 1.50 mmol). The vessel was heated at 80° C. for 3 h before being diluted with H2O (300 mL) and cooled to 0° C. The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%) mp 204-206° C.; 1H NMR (400 MHz, DMSO-d6) δ 13.39 (s, 1H), 9.43 (s, 1H), 8.38 (s, 1H), 8.21 (d, J=8.3 Hz, 2H), 8.09 (d, J=8.4 Hz, 2H), 7.88 (d, J=8.4 Hz, 2H), 7.62 (d, J=8.3 Hz, 2H), 2.57 (s, 3H); ESIMS m/z 438 (M+H). cooled to 0° C The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%) mp 204-206° C.

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a 250 mL round-bottom flask containing hydrazinecarbodithioic acid methyl ester (2.38 g, 1.95 mmol) in EtOH (100 mL) was added 4-[1-(4-trifluoromethoxyphenyl)-1H-[1,2,4]triazol-3-yl]-benzaldehyde (5.00 g, 1.50 mmol). The vessel was heated at 80° C. for 3 h before being diluted with H2O (300 mL) and cooled to 0° C. The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%): mp 204-206° C.; 1H NMR (400 MHz, DMSO-d6) δ 13.39 (s, 1H), 9.43 (s, 1H), 8.38 (s, 1H), 8.21 (d, J=8.3 Hz, 2H), 8.09 (d, J=8.4 Hz, 2H), 7.88 (d, J=8.4 Hz, 2H), 7.62 (d, J=8.3 Hz, 2H), 2.57 (s, 3H); ESIMS m/z 438 (M+H). cooled to 0° C The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a 250 mL round-bottom flask containing hydrazinecarbodithioic acid methyl ester (2.38 g, 1.95 mmol) in EtOH (100 mL) was added 4-[1-(4-trifluoromethoxyphenyl)-1H-[1,2,4]triazol-3-yl]-benzaldehyde (5.00 g, 1.50 mmol). The vessel was heated at 80° C. for 3 h before being diluted with H2O (300 mL) and cooled to 0° C. The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%): mp 204-206° C.; 1H NMR (400 MHz, DMSO-d6) δ 13.39 (s, 1H), 9.43 (s, 1H), 8.38 (s, 1H), 8.21 (d, J=8.3 Hz, 2H), 8.09 (d, J=8.4 Hz, 2H), 7.88 (d, J=8.4 Hz, 2H), 7.62 (d, J=8.3 Hz, 2H), 2.57 (s, 3H); ESIMS m/z 438 (M+H). cooled to 0° C The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%)

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

Procedure: N-Benzylimidazole is converted to 2-hydroxymethylimidazole by the method of R. G. Jones, J.A.C.S. 71, 383 (1949). The 2-hydroxymethylimidazole is converted to imidazole-2-carboxaldehyde by the method of H. Schubert and H. D. Rudorf, Angew. Chem. Intern. Ed., 5, 674 (1966). A 67.) gm. portion of imidazole-2-carboxaldehyde is added to 500 ml. of ethanol and warmed on a steam bath. An 85.4 gm. portion of methyl dithiocarbazate is added together with 200 ml. of ethanol. While the solution is warm, 20 drops of glacial acetic acid are added. The mixture is heated to reflux on a steam bath for one hour, cooled and filtered. The filtrate is evaporated yielding 123.2 gm. of 3-(2-imidazolymethylene)-dithio-carbazic acid, methyl ester. A 120.2 g. portion of 3-(2-imidazolylmethylene)dithio-carbazic acid, methyl ester is added to 800 ml. of diphenyl ester. The mixture is heated in an oil bath at 195°-200° C. for 15 minutes. The reaction mixture is cooled to room temperature and the precipitate is collected, washed with petroleum ether, and air dried. This light orange solid is crystallized twice from petroleum ether giving 83.0 gm. of imidazo[1,2-d]-as-triazine-5(6H)-thione, m.p. 238°-240° C. While the solution is warm The mixture is heated to reflux on a steam bath for one hour cooled filtered The filtrate is evaporated yielding 123.2 gm The mixture is heated in an oil bath at 195°-200° C. for 15 minutes the precipitate is collected washed with petroleum ether, and air dried This light orange solid is crystallized twice from petroleum ether giving 83.0 gm

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

Procedure: N-Benzylimidazole is converted to 2-hydroxymethylimidazole by the method of R. G. Jones, J.A.C.S. 71, 383 (1949). The 2-hydroxymethylimidazole is converted to imidazole-2-carboxaldehyde by the method of H. Schubert and H. D. Rudorf, Angew. Chem. Intern. Ed., 5, 674 (1966). A 67.) gm. portion of imidazole-2-carboxaldehyde is added to 500 ml. of ethanol and warmed on a steam bath. An 85.4 gm. portion of methyl dithiocarbazate is added together with 200 ml. of ethanol. While the solution is warm, 20 drops of glacial acetic acid are added. The mixture is heated to reflux on a steam bath for one hour, cooled and filtered. The filtrate is evaporated yielding 123.2 gm. of 3-(2-imidazolymethylene)-dithio-carbazic acid, methyl ester. A 120.2 g. portion of 3-(2-imidazolylmethylene)dithio-carbazic acid, methyl ester is added to 800 ml. of diphenyl ester. The mixture is heated in an oil bath at 195°-200° C. for 15 minutes. The reaction mixture is cooled to room temperature and the precipitate is collected, washed with petroleum ether, and air dried. This light orange solid is crystallized twice from petroleum ether giving 83.0 gm. of imidazo[1,2-d]-as-triazine-5(6H)-thione, m.p. 238°-240° C. While the solution is warm The mixture is heated to reflux on a steam bath for one hour cooled filtered The filtrate is evaporated yielding 123.2 gm The mixture is heated in an oil bath at 195°-200° C. for 15 minutes the precipitate is collected washed with petroleum ether, and air dried This light orange solid is crystallized twice from petroleum ether giving 83.0 gm

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

Procedure: N-Benzylimidazole is converted to 2-hydroxymethylimidazole by the method of R. G. Jones, J.A.C.S. 71, 383 (1949). The 2-hydroxymethylimidazole is converted to imidazole-2-carboxaldehyde by the method of H. Schubert and H. D. Rudorf, Angew. Chem. Intern. Ed., 5, 674 (1966). A 67.) gm. portion of imidazole-2-carboxaldehyde is added to 500 ml. of ethanol and warmed on a steam bath. An 85.4 gm. portion of methyl dithiocarbazate is added together with 200 ml. of ethanol. While the solution is warm, 20 drops of glacial acetic acid are added. The mixture is heated to reflux on a steam bath for one hour, cooled and filtered. The filtrate is evaporated yielding 123.2 gm. of 3-(2-imidazolymethylene)-dithio-carbazic acid, methyl ester. A 120.2 g. portion of 3-(2-imidazolylmethylene)dithio-carbazic acid, methyl ester is added to 800 ml. of diphenyl ester. The mixture is heated in an oil bath at 195°-200° C. for 15 minutes. The reaction mixture is cooled to room temperature and the precipitate is collected, washed with petroleum ether, and air dried. This light orange solid is crystallized twice from petroleum ether giving 83.0 gm. of imidazo[1,2-d]-as-triazine-5(6H)-thione, m.p. 238°-240° C. While the solution is warm The mixture is heated to reflux on a steam bath for one hour cooled filtered The filtrate is evaporated yielding 123.2 gm The mixture is heated in an oil bath at 195°-200° C. for 15 minutes the precipitate is collected washed with petroleum ether, and air dried This light orange solid is crystallized twice from petroleum ether giving 83.0 gm

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a 250 mL round-bottom flask containing hydrazinecarbodithioic acid methyl ester (2.38 g, 1.95 mmol) in EtOH (100 mL) was added 4-[1-(4-trifluoromethoxyphenyl)-1H-[1,2,4]triazol-3-yl]-benzaldehyde (5.00 g, 1.50 mmol). The vessel was heated at 80° C. for 3 h before being diluted with H2O (300 mL) and cooled to 0° C. The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%): mp 204-206° C.; 1H NMR (400 MHz, DMSO-d6) δ 13.39 (s, 1H), 9.43 (s, 1H), 8.38 (s, 1H), 8.21 (d, J=8.3 Hz, 2H), 8.09 (d, J=8.4 Hz, 2H), 7.88 (d, J=8.4 Hz, 2H), 7.62 (d, J=8.3 Hz, 2H), 2.57 (s, 3H); ESIMS m/z 438 (M+H). cooled to 0° C The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a 250 mL round-bottom flask containing hydrazinecarbodithioic acid methyl ester (2.38 g, 1.95 mmol) in EtOH (100 mL) was added 4-[1-(4-trifluoromethoxyphenyl)-1H-[1,2,4]triazol-3-yl]-benzaldehyde (5.00 g, 1.50 mmol). The vessel was heated at 80° C. for 3 h before being diluted with H2O (300 mL) and cooled to 0° C. The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%): mp 204-206° C.; 1H NMR (400 MHz, DMSO-d6) δ 13.39 (s, 1H), 9.43 (s, 1H), 8.38 (s, 1H), 8.21 (d, J=8.3 Hz, 2H), 8.09 (d, J=8.4 Hz, 2H), 7.88 (d, J=8.4 Hz, 2H), 7.62 (d, J=8.3 Hz, 2H), 2.57 (s, 3H); ESIMS m/z 438 (M+H). cooled to 0° C The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a 250 mL round-bottom flask containing hydrazinecarbodithioic acid methyl ester (2.38 g, 1.95 mmol) in EtOH (100 mL) was added 4-[1-(4-trifluoromethoxyphenyl)-1H-[1,2,4]triazol-3-yl]-benzaldehyde (5.00 g, 1.50 mmol). The vessel was heated at 80° C. for 3 h before being diluted with H2O (300 mL) and cooled to 0° C. The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%): mp 204-206° C.; 1H NMR (400 MHz, DMSO-d6) δ 13.39 (s, 1H), 9.43 (s, 1H), 8.38 (s, 1H), 8.21 (d, J=8.3 Hz, 2H), 8.09 (d, J=8.4 Hz, 2H), 7.88 (d, J=8.4 Hz, 2H), 7.62 (d, J=8.3 Hz, 2H), 2.57 (s, 3H); ESIMS m/z 438 (M+H). cooled to 0° C The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%)

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

Procedure: To a solution of 4-((1R,3S)-3-(tert-butoxycarbonylamino)-2,2,3-trimethylcyclopentylamino)-3-carbamoylpyrrolo[1,2-b]pyridazine-6-carboxylic acid (500 mg, 1.122 mmol, from Step 3 of Example 346). HOBT (206 mg, 1.347 mmol) and DIEA (0.490 mL, 2.81 mmol) in DMF (4 mL) were added EDCI (280 mg, 1.459 mmol) and methyl hydrazinecarbodithioate (144 mg, 1.178 mmol) at 23° C. The reaction mixture was stirred for 1.5 hrs followed by the addition of 25 mL of water. The solids were removed. The water phase was extracted with EtOAc (2×30 mL). The combined organic phase was washed with 10% LiCl solution (2×20 mL), 20 mL of brine and dried over Na2SO4. Filtration and concentration gave methyl 2-(4-(((1R,3S)-3-((tert-butoxycarbonyl)amino)-2,2,3-trimethylcyclopentyl)amino)-3-carbamoylpyrrolo[1,2-b]pyridazine-6-carbonyl)hydrazinecarbodithioate (466.5 mg, 76% yield). MS (ES+) m/z: 550.08 (M+H); HPLC retention time: 3.168 min (analytical HPLC Method F). The solids were removed The water phase was extracted with EtOAc (2×30 mL) The combined organic phase was washed with 10% LiCl solution (2×20 mL), 20 mL of brine dried over Na2SO4 Filtration and concentration

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a 250 mL round-bottom flask containing hydrazinecarbodithioic acid methyl ester (2.38 g, 1.95 mmol) in EtOH (100 mL) was added 4-[1-(4-trifluoromethoxyphenyl)-1H-[1,2,4]triazol-3-yl]-benzaldehyde (5.00 g, 1.50 mmol). The vessel was heated at 80° C. for 3 h before being diluted with H2O (300 mL) and cooled to 0° C. The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%): mp 204-206° C.; 1H NMR (400 MHz, DMSO-d6) δ 13.39 (s, 1H), 9.43 (s, 1H), 8.38 (s, 1H), 8.21 (d, J=8.3 Hz, 2H), 8.09 (d, J=8.4 Hz, 2H), 7.88 (d, J=8.4 Hz, 2H), 7.62 (d, J=8.3 Hz, 2H), 2.57 (s, 3H); ESIMS m/z 438 (M+H). cooled to 0° C The precipitated product was collected by vacuum filtration as an off-white solid (6.13 g, 93%)