Diisopropylethylamine → 5-Methyl-pyrazine-2-carboxylic acid {3-[(1-methyl-1H-pyrazole-3-carbonyl)-amino]-adamantan-1-yl}-amide

HRID 1020231

Reaktionsgleichung

Reaktionsgleichung von HRID 1020231
[C:1]12([NH2:12])[CH2:10][CH:5]3[CH2:6][CH:7]([CH2:9][C:3]([NH2:11])([CH2:4]3)[CH2:2]1)[CH2:8]2.CCN(C(C)C)C(C)C.[CH3:22][N:23]1[CH:27]=[CH:26][C:25]([C:28]([OH:30])=O)=[N:24]1.[CH3:31][C:32]1[N:33]=[CH:34][C:35]([C:38](O)=[O:39])=[N:36][CH:37]=1.F[P-](F)(F)(F)(F)F.N1(O[P+](N2CCCC2)(N2CCCC2)N2CCCC2)C2C=CC=CC=2N=N1>C(Cl)Cl>[CH3:22][N:23]1[CH:27]=[CH:26][C:25]([C:28]([NH:12][C:1]23[CH2:10][CH:5]4[CH2:6][CH:7]([CH2:9][C:3]([NH:11][C:38]([C:35]5[CH:34]=[N:33][C:32]([CH3:31])=[CH:37][N:36]=5)=[O:39])([CH2:4]4)[CH2:2]2)[CH2:8]3)=[O:30])=[N:24]1

Komponenten

7

Edukt 5

HCID 81531DiisopropylethylamineHCID 1228315-Methyl-2-pyrazinecarboxylic acidHCID 213512Adamantane-1,3-diamineHCID 5731761-methyl-1H-pyrazole-3-carboxylic acidHCID 2724699PyBOP

Produkt 1

HCID 446332035-Methyl-pyrazine-2-carboxylic acid {3-[(1-methyl-1H-pyrazole-3-carbonyl)-amino]-adamantan-1-yl}-amideAusbeute 38 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of adamantane-1,3-diamine (20 mg, 0.1 mmol; Zerenex Molecular Ltd., Greater Manchester, UK) in DCM (2 mL) was added DIEA (26 mg, 0.15 mmol), 1-methyl-1H-pyrazole-3-carboxylic acid (14 mg, 0.11 mmol), 5-methyl-pyrazine-2-carboxylic acid (15 mg, 0.11 mmol) and benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate (110 mg, 0.20 mmol). After stirring for 3 hours at rt, the reaction mixture was partitioned into dichloromethane and saturated sodium bicarbonate. The organic layer was dried over sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified on a RP-HPLC/MS purification system (Gradient: acetonitrile in water, 25-95%, in 3.4 minutes with a cycle time of 5 min. A shallow gradient between 25-50% of acetonitrile was used between 0.75-3.3 min to separate close-eluting impurities. Flow rate: 100 mL/min. Mobile phase additive: 25 mM of ammonium formate. Column: Inertsil® C8, 30×50 mm, 5 μm particle size (GL Sciences, Tokyo, Japan)) to afford 15 mg (37%) of the title compound, 5-methyl-pyrazine-2-carboxylic acid {3-[(1-methyl-1H-pyrazole-3-carbonyl)-amino]-adamantan-1-yl}-amide, as a colorless oil. 1H NMR (400 MHz, CDCl3) δ9.22 (s, 1H), 8.34-8.33 (m, 1H), 7.67 (s, br, 1H), 7.33 (d, J=2.3 Hz, 1H), 6.76-6.72 (m, 2H), 3.89 (s, 3H), 2.64 (s, 3H), 2.54 (s, br, 2H), 2.37-2.09 (m, 10H), 1.73-1.68 (m, 2H). ESI-MS m/z: 395.0 (M+H)+.

Aufarbeitung

  1. customthe reaction mixture was partitioned into dichloromethane and saturated sodium bicarbonate
  2. dry with materialThe organic layer was dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified on a RP-HPLC/MS purification system (Gradient
  6. waitacetonitrile in water, 25-95%, in 3.4 minutes with a cycle time of 5 min
  7. waitA shallow gradient between 25-50% of acetonitrile was used between 0.75-3.3 min
  8. customto separate
  9. washclose-eluting impurities

Quellen und Nachweise

ORD-Eintrag
ord-5b2ef60b7f6f47c7af0fc92ef1a77ca7
Quelldatensatz
uspto-grants-2014_05
Patentnummer
US08716284B2

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