79% |
With hydroxylamine hydrochloride; sodium methylate In methanol at 10℃; for 2h; |
4.D Synthesis of N-hydroxy-2-((1-phenylcyclopropyl)amino)pyrimidine-5-carboxamide (Compound D)
A solution of MeOH (1000 ml) was cooled to about 0-5° C. with stirring. NH2OH HCl (1107 g, 10 equiv.) was added, followed by careful addition of NaOCH3 (1000 g, 12.0 equiv.) The resulting mixture was stirred at 0-5° C. for one hr, and was filtered to remove the solid. Compound 4 (450 g, 1.0 equiv.) was added to the reaction mixture in one portion, and stirred at 10° C. for two hours until compound 4 was consumed. The reaction mixture was adjusted to a pH of about 8.5-9 through addition of HCl (6N), resulting in precipitation. The mixture was concentrated under reduced pressure. Water (3000 ml) was added to the residue with intense stirring and the precipitate was collected by filtration. The product was dried in an oven at 45° C. overnight (340 g, 79% yield). |
79% |
With hydroxylamine hydrochloride; sodium methylate In methanol at 0 - 10℃; for 3h; |
4 Synthesis of N-hydroxy-2-((1-phenylcyclopropyl)amino)pyrimidine-5-carboxamide (Compound D)
Synthesis of N-hydroxy-2-((1-phenylcyclopropyl)amino)pyrimidine-5-carboxamide (Compound D) A solution of MeOH (1000 ml) was cooled to about 0-5° C. with stirring. NH2OH HCl (1107 g, 10 equiv.) was added, followed by careful addition of NaOCH3 (1000 g, 12.0 equiv.) The resulting mixture was stirred at 0-5° C. for one hr, and was filtered to remove the solid. Compound 4 (450 g, 1.0 equiv.) was added to the reaction mixture in one portion, and stirred at 10° C. for two hours until compound 4 was consumed. The reaction mixture was adjusted to a pH of about 8.5-9 through addition of HCl (6N), resulting in precipitation. The mixture was concentrated under reduced pressure. Water (3000 ml) was added to the residue with intense stirring and the precipitate was collected by filtration. The product was dried in an oven at 45° C. overnight (340 g, 79% yield). |
79% |
With hydroxylamine hydrochloride; sodium methylate In methanol at 0 - 10℃; for 2h; |
4 Synthesis o fN-hydroxy-2-(( 1 -phenylcyclopropyl)amino)pyrimidine-5 -carboxamide (Compound D):
(Compound D): A solution of MeOH(1000 ml) was cooled to about 0-5 °C with stirring.NH2OH HC1 (1107 g, 10 equiv.) was added, followed by careful addition ofNaOCH3 (1000 g, 12.0 equiv.) The resulting mixture was stirred at 0-5 °C for one hr, and was filtered to remove the solid. Compound 4 (450 g, 1.0 equiv.) was added to the reaction mixture in one portion, and stirred at 10 °C for two hours until compound 4 was consumed. The reactionmixture was adjusted to a pH of about 8.5-9 through addition of HC1 (6N), resulting in precipitation. The mixture was concentrated under reduced pressure. Water (3000 ml) was added to the residue with intense stirring and the precipitate was collected by filtration. The product was dried in an oven at 45 °C overnight (340 g, 79% yield). |
79% |
With hydroxylamine hydrochloride; sodium methylate In methanol at 0 - 10℃; |
1 Synthesis of N-hvdroxy-2-((l-phenylcvclopropyl)amino)pyrimidine-5-carboxamide (Compound A):
Synthesis of N-hvdroxy-2-((l-phenylcvclopropyl)amino)pyrimidine-5-carboxamide (Compound A): A solution of MeOH(1000 ml) was cooled to about 0-5 °C with stirring. NH2OH HC1 (1107 g, 10 equiv.) was added, followed by careful addition of NaOCH3 (1000 g, 12.0 equiv.) The resulting mixture was stirred at 0-5 °C for one hr, and was filtered to remove the solid. Compound 4 (450 g, 1.0 equiv.) was added to the reaction mixture in one portion, and stirred at 10 °C for two hours until compound 4 was consumed. The reaction mixture was adjusted to a pH of about 8.5-9 through addition of HC1 (6N), resulting in precipitation. The mixture was concentrated under reduced pressure. Water (3000 ml) was added to the residue with intense stirring and the precipitate was collected by filtration. The product was dried in an oven at 45 °C overnight (340 g, 79% yield). |
79% |
With hydroxylamine hydrochloride; sodium methylate In methanol at 10℃; for 2h; |
4 Synthesis of N-hydroxy-2-(( 1 -phenylcyclopropyl)amino)pyrimidine-5 -carboxamide(Comnound D:
A solution of MeOH(1000 ml) was cooled to about 0-5 °C with stirring.NH2OH HC1 (1107 g, 10 equiv.) was added, followed by careful addition of NaOCH3 (1000 g, 12.0 equiv.) The resulting mixture was stirred at 0-5 °C for one hr, and was filtered to remove the solid. Compound 4 (450 g, 1.0 equiv.) was added to the reaction mixture in one portion, and stirred at 10 °C for two hours until compound 4 was consumed. The reaction mixture was adjusted to a pH of about 8.5-9 through addition of HC1 (6N), resulting inprecipitation. The mixture was concentrated under reduced pressure. Water (3000 ml) was added to the residue with intense stirring and the precipitate was collected by filtration. The product was dried in an oven at 45 °C overnight (340 g, 79% yield). |
79% |
With hydroxylamine hydrochloride; sodium methylate In methanol at 0 - 10℃; for 2h; |
1.A Synthesis of N-hydroxy-2-((1-phenylcyclopropyl)amino)pyrimidine-5-carboxamide (Compound 1)
0120] A solution of MeOH (1000 mL) was cooled to about 0-5°C with stirring. NH2OH HCl (1107 g, 10 equiv) was added, followed by careful addition of NaOCH3 (1000 g, 12.0 equiv) The resulting mixture was stirred at 0-5°C for one hour and was filtered to remove the solid. Intermediate 4 (450 g, 1.0 equiv) was added to the reaction mixture in one portion and stirred at 10°C for two hours until intermediate 4 was consumed. The reaction mixture was adjusted to a pH of about 8.5-9 through addition of HCl (6N), resulting in precipitation. The mixture was concentrated under reduced pressure. Water (3000 mL) was added to the residue with intense stirring and the precipitate was collected by filtration. The product was dried in an oven at 45°C overnight (340 g, 79% yield). |
79% |
With hydroxylamine hydrochloride; sodium methylate In methanol at 0 - 10℃; for 3h; |
14 Synthesis of N-hydroxy-2-((l-phenylcyclopropyl)amino)pyrimidine-5-carboxamide ( Compound D)
A solution of MeOH(1000 ml) was cooled to about 0-5 °C with stirring. NH2OH HC1 (1107 g, 10 equiv.) was added, followed by careful addition of NaOCH3 (1000 g, 12.0 equiv.) The resulting mixture was stirred at 0-5 °C for one hr, and was filtered to remove the solid. Compound 4 (450 g, 1.0 equiv.) was added to the reaction mixture in one portion, and stirred at 10 °C for two hours until compound 4 was consumed. The reaction mixture was adjusted to a pH of about 8.5-9 through addition of HC1 (6N), resulting in precipitation. The mixture was concentrated under reduced pressure. Water (3000 ml) was added to the residue with intense stirring and the precipitate was collected by filtration. The product was dried in an oven at 45 °C overnight (340 g, 79% yield). |
79% |
With hydroxylamine hydrochloride; sodium methylate In methanol at 10℃; for 2h; |
4 Synthesis of N-hvdroxy-2-((l-phenylcvclopropyl)amino)pyrimidine-5-carboxamide (Compound D)
A solution of MeOH(1000 ml) was cooled to about 0-5 °C with stirring. H2OH HC1 (1107 g, 10 equiv.) was added, followed by careful addition of NaOCH3 (1000 g, 12.0 equiv.) The resulting mixture was stirred at 0-5 °C for one hr., and was filtered to remove the solid. Compound 4 (450 g, 1.0 equiv.) was added to the reaction mixture in one portion, and stirred at 10 °C for two hours until compound 4 was consumed. The reaction mixture was adjusted to a pH of about 8.5-9 through addition of HC1 (6N), resulting in precipitation. The mixture was concentrated under reduced pressure. Water (3000 ml) was added to the residue with intense stirring and the precipitate was collected by filtration. The product was dried in an oven at 45 °C overnight (340 g, 79% yield) |
79% |
With hydroxylamine hydrochloride; sodium methylate In methanol at 10℃; for 2h; |
4 Synthesis of N-hydroxy-2-((1-phenylcyclopropyl)amino)pyrimidine-5-carboxamide (Compound D)
A solution of MeOH(1000 ml) was cooled to about 0-5 °C with stirring. H2OH HCl (1107 g, 10 equiv.) was added, followed by careful addition of NaOCH3 (1000 g, 12.0 equiv.) The resulting mixture was stirred at 0-5 °C for one hr, and was filtered to remove the solid. Compound 4 (450 g, 1.0 equiv.) was added to the reaction mixture in one portion, and stirred at 10 °C for two hours until compound 4 was consumed. The reaction mixture was adjusted to a pH of about 8.5-9 through addition of HC1 (6N), resulting in precipitation. The mixture was concentrated under reduced pressure. Water (3000 ml) was added to the residue with intense stirring and the precipitate was collected by filtration. The product was dried in an oven at 45 °C overnight (340 g, 79% yield). |