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Cesium carbonate → HCID 66555935, compound

HRID 715030
Notes
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Reaction equation

HRID 715030 reaction equation
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
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 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

Product 1

HCID 66555935HCID 66555935, compound

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compound
Catalyst
HCID 6212ChloroformSolvent
HCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

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)+.

Workup

  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

Sources & evidence

ORD record
ord-c1884f061c15478ca0ed148107d9088f
Source dataset
uspto-grants-2015_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09187473B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes