1,2-Dichloroethane → HCID 57944963、化合物

HRID 548004

反応式

HRID 548004 の反応式
Cl.[CH3:2][C:3]1[C:7]([CH2:8][N:9]2[CH:13]=[C:12]([NH2:14])[CH:11]=[N:10]2)=[C:6]([CH3:15])[O:5][N:4]=1.[N:16]1[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=1[C:22](O)=[O:23].C1C=CC2N(O)N=NC=2C=1.C(N(CC)CC)C.C(Cl)CCl>C(Cl)Cl>[CH3:2][C:3]1[C:7]([CH2:8][N:9]2[CH:13]=[C:12]([NH:14][C:22](=[O:23])[C:17]3[CH:18]=[CH:19][CH:20]=[CH:21][N:16]=3)[CH:11]=[N:10]2)=[C:6]([CH3:15])[O:5][N:4]=1

参加物

7

反応物 5

HCID 111,2-DichloroethaneHCID 1018Picolinic acidHCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 574222641-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-amine hydrochloride

生成物 1

HCID 57944963HCID 57944963、化合物収率 60%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

実験手順

1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-amine hydrochloride (example 4-1a) (400 mg, 2.1 mmol), picolinic acid (256 mg, 2.1 mmol), and HOBt (388 mg, 2.50 mmol) were mixed in DCM (7 mL). The reaction was treated with triethylamine (670 mL, 4.8 mmol) and stirred for 15 minutes at room temperature under a nitrogen atmosphere. EDC (598 mg, 3.1 mmol) was added and the reaction was stirred for an additional 4 hours. The reaction was then diluted with dichloromethane (5 mL) and washed with aqueous saturated NaHCO3 solution (5 mL, 2×) and then with aqueous saturated NaCl solution (5 mL). The organic layer was collected, dried, and filtered. Solvents were removed under vacuum. The crude product was re-suspended in EtOH (5 mL) and purified by reversed phase HPLC (5%-95% ACN in H2O:25 minute gradient). The pure fractions were combined and concentrated to afford N-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)picolinamide (372 mg, 60%) as a white solid. 1H NMR (CDCl3, 400 MHz): δ 2.21 (s, 3H), 2.44 (s, 3H), 5.05 (s, 2H), 7.49-7.47 (m, 1H), 7.59 (s, 1H), 7.93-7.88 (dt, J=14, 2 Hz, 1H), 8.07 (s, 1H), 8.24-8.21 (d, J=8 Hz, 1H), 8.61-8.56 (m, 1H), 9.83 (bs, 1H). LC/MS; [M+H] calculated for C15H15N5O2; expected 297.1; found 298.3. Melting point: 135-137° C.

後処理

  1. stirringthe reaction was stirred for an additional 4 hours
  2. washwashed with aqueous saturated NaHCO3 solution (5 mL, 2×)
  3. customThe organic layer was collected
  4. customdried
  5. filtrationfiltered
  6. customSolvents were removed under vacuum
  7. custompurified by reversed phase HPLC (5%-95% ACN in H2O:25 minute gradient)
  8. concentrationconcentrated

出典と根拠

ORDレコード
ord-35a30dc54e5a48e3a865bc8f047f763e
出典データセット
uspto-grants-2011_05
特許番号
US07939671B2

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