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Cesium carbonate → HCID 66555935, Verbindung

HRID 1629932
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1629932
CC1(C)C(C)(C)OB([C:9]2[CH:10]=[C:11]3[CH:17]=[CH:16][NH:15][C:12]3=[N:13][CH:14]=2)O1.Cl[C:20]1[CH:25]=[N:24][CH:23]=[C:22]([N:26]2[CH2:31][CH2:30][N:29]([CH3:32])[CH2:28][CH2:27]2)[N:21]=1.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C.C(Cl)(Cl)Cl.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:32][N:29]1[CH2:28][CH2:27][N:26]([C:22]2[N:21]=[C:20]([C:9]3[CH:10]=[C:11]4[CH:17]=[CH:16][NH:15][C:12]4=[N:13][CH:14]=3)[CH:25]=[N:24][CH:23]=2)[CH2:31][CH2:30]1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 3

HCID 10796Cesium carbonateHCID 99207702-Chloro-6-(4-methylpiperazin-1-yl)pyrazineHCID 242087895-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo(2,3-b)pyridine

Produkt 1

HCID 66555935HCID 66555935, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 178418397HCID 178418397, Verbindung
Katalysator
HCID 6212ChloroformLösungsmittel
HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

The starting material 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine (124) (50 mg, 0.2 mmol, 1 eq) and 2-chloro-6-(4-methylpiperazin-1-yl)pyrazine (63) (44 mg, 0.2 mmol, 1 eq) in DMF (5 mL) was degassed and purged under argon atmosphere for 10 min. To this reaction mixture was charged Cs2CO3 (133 mg, 0.4 mmol, 2 eq) followed by addition of Pd(PPh3)4 (0.01 mg, 0.04 mmol) and degassing and purging under argon for an additional 10 min. The reaction mixture was heated at 100° C. for 12 h in a sealed tube. After completion of the reaction, the reaction mixture was diluted with CHCl3 and filtered through Celite. The solvents were distilled off and the crude material was submitted for flash column purification in neutral alumina using 2% MeOH/CHCl3 to obtain pale yellow solid compound 5-(6-(4-methylpiperazin-1-yl)pyrazin-2-yl)-1H-pyrrolo[2,3-b]pyridine 125 in 20 mg quantity. The compound 125 was confirmed by 1HNMR and LCMS. 1H NMR (400 MHz, CDCl3) δ: 8.96 (d, J=1.5 Hz 1H), 8.55 (d, J=1.70 Hz, 1H), 8.30 (s, 1H), 8.08 (s, 1H), 7.35 (m, J=3.04, 1H), 6.60 (m, J=1.95 1H), 3.75 (m, J=5.00, 4H), 2.58 (m, J=5.12, 4H), 2.38 (s, 3H); MS m/z 294.9 (M+H)+.

Aufarbeitung

  1. custompurged under argon atmosphere for 10 min
  2. customdegassing
  3. custompurging under argon for an additional 10 min
  4. customAfter completion of the reaction
  5. filtrationfiltered through Celite
  6. distillationThe solvents were distilled off
  7. customthe crude material was submitted for flash column purification in neutral alumina using 2% MeOH/CHCl3

Quellen und Nachweise

ORD-Eintrag
ord-576cedbbcb494cacb66b8f1582e5a293
Quelldatensatz
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08791112B2

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