Cesium carbonate → HCID 66556098, compound

HRID 715037Notes

Reaction equation

HRID 715037 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]([N:26]2[C:34]3[C:29](=[CH:30][CH:31]=[CH:32][CH:33]=3)[CH2:28][CH2:27]2)[CH:23]=[N:22][CH:21]=1.C([O-])([O-])=O.[Cs+].[Cs+]>COCCOC.C(Cl)(Cl)Cl>[N:26]1([C:24]2[N:25]=[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:21]=[N:22][CH:23]=2)[C:34]2[C:29](=[CH:30][CH:31]=[CH:32][CH:33]=2)[CH2:28][CH2:27]1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 242087895-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo(2,3-b)pyridineHCID 534081871-(6-Chloro-2-pyrazinyl)-2,3-dihydro-1H-indole

Product 1

HCID 66556098HCID 66556098, compound

Reagents, catalysts & solvents 2

HCID 6212ChloroformSolventHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
90 °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, 0.205 mmol, 1 eq) and 1-(6-chloropyrazin-2-yl)indoline (88) 423 mg, 0.185 mmol, 0.9 eq) in DME (7 mL) was degassed and purged under argon atmosphere for 10 min. To this reaction mixture was charged Cs2CO3 (133 mg, 0.410 mmol, 2 eq) followed by addition of Pd(dpp)Cl2 (6 mg, 0.00819 mmol, 0.04 eq) and degassing and purging under argon for additional 10 minutes was performed. 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% MeOH/CHCl3 to obtain pale yellow solid compound 5-(6-(indolin-1-yl)pyrazin-2-yl)-1H-pyrrolo[2,3-b]pyridine 134 in 12 mg quantity. The compound 134 was confirmed by 1HNMR and LCMS. 1H NMR (400 MHz, CDCl3) δ: 9.06 (s, 2H), 8.59 (s, 1H), 8.60 (s, 1H), 8.55 (s, 1H), 8.44 (m, 1H), 8.16 (s, 1H), 7.41 (m, 1H), 6.99 (m, 1H), 4.21 (m, J=8.53, 2H), 3.33 (m, J=341.82, 2H); MS m/z 313.9 (M+H)+.

Workup

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

Sources & evidence

ORD record
ord-47c5b693cdfb4bf69f263f90a0078736
Source dataset
uspto-grants-2015_11
Patent number
US09187473B2

Reaction notes

Loading…