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Potassium Acetate → tert-butyl 4-((1R)-1-(6-fluoro-5-(2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl)pyridin-3-yl)ethyl)piperazine-1-carboxylate

HRID 1621859
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1621859
Cl[C:2]1[N:10]=[C:9]([CH3:11])[N:8]=[C:7]2[C:3]=1[N:4]=[CH:5][N:6]2[CH:12]1[CH2:17][CH2:16][CH2:15][CH2:14][O:13]1.[C:18]([O:22][C:23]([N:25]1[CH2:30][CH2:29][N:28]([C@@H:31]([C:33]2[CH:34]=[C:35](B(O)O)[C:36]([F:39])=[N:37][CH:38]=2)[CH3:32])[CH2:27][CH2:26]1)=[O:24])([CH3:21])([CH3:20])[CH3:19].C([O-])(=O)C.[K+]>O1CCOCC1.ClCCl.O.[Cl-].[Na+].O>[F:39][C:36]1[N:37]=[CH:38][C:33]([C@H:31]([N:28]2[CH2:27][CH2:26][N:25]([C:23]([O:22][C:18]([CH3:19])([CH3:21])[CH3:20])=[O:24])[CH2:30][CH2:29]2)[CH3:32])=[CH:34][C:35]=1[C:2]1[N:10]=[C:9]([CH3:11])[N:8]=[C:7]2[C:3]=1[N:4]=[CH:5][N:6]2[CH:12]1[CH2:17][CH2:16][CH2:15][CH2:14][O:13]1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

8

Edukt 3

HCID 517044Potassium AcetateHCID 595482686-chloro-2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purineHCID 66600472(R)-5-(1-(4-(tert-butoxycarbonyl)piperazin-1-yl)ethyl)-2-fluoropyridin-3-ylboronic acid

Produkt 1

HCID 68518749tert-butyl 4-((1R)-1-(6-fluoro-5-(2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl)pyridin-3-yl)ethyl)piperazine-1-carboxylateAusbeute 77 %

Reagenzien, Katalysatoren, Lösungsmittel

4
HCID 962WaterLösungsmittel2×HCID 6344DichloromethaneLösungsmittelHCID 312751,4-DioxaneLösungsmittelHCID 57417360Sodium chloride; waterLösungsmittel

Reaktionsbedingungen

Temperatur
120 °C

Versuchsvorschrift

A glass microwave reaction vessel was charged with 6-chloro-2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purine (0.250 g, 0.989 mmol) and (R)-5-(1-(4-(tert-butoxycarbonyl)piperazin-1-yl)ethyl)-2-fluoropyridin-3-ylboronic acid (0.489 g, 1.385 mmol) in dioxane (3 mL). Then A-Phos (0.070 g, 0.099 mmol), potassium acetate (0.291 g, 2.97 mmol) and water (0.5 mL) were added into the reaction mixture. The reaction mixture was stirred and heated in a CEM Explorer Microwave at 120° C. for 10 min (120 watts, Powermax feature on). The mixture was diluted with dichloromethane (10 mL), water (10 mL) and brine solution (5 mL). The organic layer was collected by extracting with dichloromethane (3×10 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to give the crude material as a tan oil. The crude material was adsorbed onto a plug of silica gel and purified by chromatography through a silica-gel column (40 g) eluting with 100% ethyl acetate to give tert-butyl 4-((1R)-1-(6-fluoro-5-(2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl)pyridin-3-yl)ethyl)piperazine-1-carboxylate (0.400 g, 0.761 mmol, 77% yield) as a light-yellow solid. 1H NMR (400 MHz, CDCl3) δ 8.20-8.29 (m, 3H) 5.78 (dd, J=10.37, 2.35 Hz, 1H) 3.76 (s, 1H) 3.55 (d, J=6.65 Hz, 1H) 3.34 (s, 5H) 2.82 (s, 3H) 2.33 (d, J=5.09Hz, 5H) 1.95-2.13 (m, 3H) 1.56-1.81 (m, 5H) 1.33-1.40 (m, 9H). m/z (ESI, +ve ion) 526.2 (M+H)+.

Aufarbeitung

  1. customA glass microwave reaction vessel
  2. customThe organic layer was collected
  3. extractionby extracting with dichloromethane (3×10 mL)
  4. dry with materialThe combined organic extracts were dried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customto give the crude material as a tan oil
  8. custompurified by chromatography through a silica-gel column (40 g)
  9. washeluting with 100% ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-ff30e1f75f814675ba4531e81f127434
Quelldatensatz
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08772480B2

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