Cesium carbonate → HCID 66555937, compound

HRID 715032Notes

Reaction equation

HRID 715032 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]([NH:26][CH2:27][CH2:28][N:29]([CH3:31])[CH3:30])[CH:23]=[N:22][CH:21]=1.C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.C(Cl)(Cl)Cl>[NH:15]1[C:12]2=[N:13][CH:14]=[C:9]([C:20]3[N:25]=[C:24]([NH:26][CH2:27][CH2:28][N:29]([CH3:31])[CH3:30])[CH:23]=[N:22][CH:21]=3)[CH:10]=[C:11]2[CH:17]=[CH:16]1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 23349916N2-(6-Chloro-2-pyrazinyl)-N1,N1-dimethyl-1,2-ethanediamineHCID 242087895-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo(2,3-b)pyridine

Product 1

HCID 66555937HCID 66555937, compound

Reagents, catalysts & solvents 2

HCID 6212ChloroformSolventHCID 312751,4-DioxaneSolvent

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) (70 mg, 0.286 mmol, 1 eq) and N1-(6-chloropyrazin-2-yl)-N2,N2-dimethylethane-1,2-diamine (66) (457 mg, 0.286 mmol, 1 eq) in 1,4-dioxane (5 mL) was degassed and purged under argon atmosphere for 10 min. To this reaction mixture was charged Cs2CO3 (150 mg, 0.614 mmol, 1.5 eq) followed by addition of Pd(dpp)Cl2 (6.2 mg, 0.0086 mmol, 0.03 eq) and degassing and purging under argon for 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 oCelite. The solvents were distilled off and the crude material was submitted for flash column purification in neutral alumina using 1% MeOH/CHCl3 to obtain pale yellow solid compound N1-(6-(1H-pyrrolo[2,3-b]pyridin-5-yl)pyrazin-2-yl)-N2,N2-dimethylethane-1,2-diamine 127 in 10 mg quantity. The compound 127 was confirmed by 1HNMR and LCMS. 1H NMR (400 MHz, CDCl3) δ: 11.78 (s, 1H), 8.90 (d, J=1.82, 1H), 8.57 (s, 1H), 8.30 (s, 1H), 7.89 (s, 1H), 7.51 (m, J=151.58, 1H), 7.01 (m, J=201.21, 1H), 6.53 (m, J=191.45, 1H), 3.48 (m, J=5.85, 2H), 2.22 (s, 6-H); MS m/z 283 (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 oCelite
  6. distillationThe solvents were distilled off
  7. customthe crude material was submitted for flash column purification in neutral alumina using 1% MeOH/CHCl3

Sources & evidence

ORD record
ord-48a625358b824940aeaedb85ed9b0608
Source dataset
uspto-grants-2015_11
Patent number
US09187473B2

Reaction notes

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