Cesium carbonate → HCID 66556278, compound

HRID 1629944Notes

Reaction equation

HRID 1629944 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[CH2:31][CH2:30][O:29][CH2:28][CH2:27]2)[CH:23]=[N:22][CH:21]=1.C([O-])([O-])=O.[Cs+].[Cs+].CO.C(Cl)(Cl)Cl>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>[NH:15]1[C:12]2=[N:13][CH:14]=[C:9]([C:20]3[N:25]=[C:24]([N:26]4[CH2:27][CH2:28][O:29][CH2:30][CH2:31]4)[CH:23]=[N:22][CH:21]=3)[CH:10]=[C:11]2[CH:17]=[CH:16]1

Participants

8

Reactant 4

HCID 10796Cesium carbonateHCID 21584188Chloroform methanolHCID 242087895-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo(2,3-b)pyridineHCID 263702094-(6-Chloropyrazin-2-yl)morpholine

Product 1

HCID 66556278HCID 66556278, compoundYield 22.2%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 6212ChloroformSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

A stirred solution of 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine (147) (100 mg, 0.4 mmol) and 4-(6-chloropyrazin-2-yl)morpholine (103) (80 mg, 0.4 mmol) in DMF (5 mL) was degassed and purged with nitrogen for 10 min. To this reaction mixture was added Cs2CO3 (333 mg, 1.0 mmol, 2.5 eq) and the reaction mixture was purged again for another min followed by the addition of Pd(PPh3)4 (0.018 mg, 0.016 mmol, 0.04 eq). The resulting reaction mixture was heated to 100° C., overnight under sealed tube condition. After completion of the reaction the mass was diluted with chloroform and filtered through Celite and the solvents were removed to obtain the crude product. The crude was passed through neutral alumina eluting with 2-3% MeOH/CHCl3 provided a white coloured solid 25 mg of 4-(6-(1H-pyrrolo[2,3-b]pyridin-5-yl)pyrazin-2-yl)morpholine 148. 1H NMR (400 MHz, CDCl3) δ: 8.96 (s, 1H), 8.95 (s, 1H), 8.84 (s, 1H), 8.54 (d, J=1.95, 1H), 8.43 (s, 1H), 8.07 (s, H), 7.36 (m, 1H), 3.71 (t, 4H), 3.69 (bt, 4H); MS m/z 281.90 (M+H)+.

Workup

  1. custompurged with nitrogen for 10 min
  2. customthe reaction mixture was purged again for another min
  3. customThe resulting reaction mixture
  4. customunder sealed tube condition
  5. customAfter completion of the reaction the mass
  6. filtrationfiltered through Celite
  7. customthe solvents were removed
  8. customto obtain the crude product

Sources & evidence

ORD record
ord-fc96a109c0bb49138c27814e7143468b
Source dataset
uspto-grants-2014_07
Patent number
US08791112B2

Reaction notes

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