Cesium carbonate → HCID 66556102, compound

HRID 1629941Notes

Reaction equation

HRID 1629941 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[N:25]=[C:24]([C:26]([N:28]2[CH2:33][CH2:32][N:31]([CH3:34])[CH2:30][CH2:29]2)=[O:27])[CH:23]=[N:22][CH:21]=1.C([O-])([O-])=O.[Cs+].[Cs+]>COCCOC.C(Cl)(Cl)Cl>[NH:15]1[C:12]2=[N:13][CH:14]=[C:9]([C:20]3[N:25]=[C:24]([C:26]([N:28]4[CH2:33][CH2:32][N:31]([CH3:34])[CH2:30][CH2:29]4)=[O:27])[CH:23]=[N:22][CH:21]=3)[CH:10]=[C:11]2[CH:17]=[CH:16]1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 242087895-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo(2,3-b)pyridineHCID 28064966(6-Chloropyrazin-2-yl)(4-methylpiperazin-1-yl)methanone

Product 1

HCID 66556102HCID 66556102, compound

Reagents, catalysts & solvents 2

HCID 6212ChloroformSolventHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
90 °C

Procedure

A stirred solution of 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine (124) (70 mg, 0.287 mmol, 1 eq) and (6-chloropyrazin-2-yl)(4-methylpiperazin-1-yl)methanone (60) (69 mg, 0.287 mmol, 1.0 eq) in DME (5 mL) was degassed and purged under argon atmosphere for 10 min. To this reaction mixture was charged Cs2CO3 (140 mg, 0.430 mmol, 1.5 eq) followed by addition of Pd(dpp)Cl2 (13.2 mg, 0.0114 mmol, 0.04 eq) and degassing and purging under argon for additional 10 min. The reaction mixture was heated at 90° 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 1-2% MeOH/CHCl3 to obtain pale yellow solid compound (6-(1H-pyrrolo[2,3-b]pyridin-5-yl)pyrazin-2-yl)(4-methylpiperazin-1-yl)methanone 139 in 20 mg quantity. The compound 139 was confirmed by 1HNMR and LCMS. 1H NMR (400 MHz, CDCl3) δ: 11.98 (s, 1H), 9.45 (s, 1H), 9.04 (d, J=1.95, 1H), 8.76 (m, J=12.43, 2H), 7.63 (m, J=2.68, 1H), 6.64 (m, J=1.58, 1H), 3.76 (s, 2H), 3.59 (m, J=69.03, 2H), 2.42 (m, 4H), 2.28 (s, 3H); MS m/z 321.4 (M+H)+.

Workup

  1. custompurged under argon atmosphere for 10 min
  2. customdegassing
  3. custompurging under argon for 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 1-2% MeOH/CHCl3

Sources & evidence

ORD record
ord-ddcfa6f19eb74f33bfc479fb58d70468
Source dataset
uspto-grants-2014_07
Patent number
US08791112B2

Reaction notes

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