Potassium Phosphate, Tribasic → HCID 59455199, compound

HRID 1400486Notes

Reaction equation

HRID 1400486 reaction equation
[CH3:1][N:2]1[CH2:15][CH2:14][C:5]2[NH:6][C:7]3[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][C:12]=3[C:4]=2[CH2:3]1.N1CCC[C@H]1C(O)=O.P([O-])([O-])([O-])=O.[K+].[K+].[K+].Br[CH:33]=[C:34]([C:39]1[CH:44]=[CH:43][N:42]=[CH:41][CH:40]=1)[C:35]([CH3:38])([CH3:37])[CH3:36]>CN(C=O)C.[Cu]I>[CH3:36][C:35]([CH3:38])([CH3:37])/[C:34](/[C:39]1[CH:40]=[CH:41][N:42]=[CH:43][CH:44]=1)=[CH:33]\[N:6]1[C:7]2[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][C:12]=2[C:4]2[CH2:3][N:2]([CH3:1])[CH2:15][CH2:14][C:5]1=2

Participants

7

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 145742L-ProlineHCID 2092911H-Pyrido[4,3-b]indole, 2,3,4,5-tetrahydro-2,8-dimethyl-HCID 86644760HCID 86644760, compound

Product 1

HCID 59455199HCID 59455199, compound

Reagents, catalysts & solvents 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 6228DimethylformamideSolvent

Procedure

2,3,4,5-Tetrahydro-2,8-dimethyl-1H-pyrido[4,3-b]indole (30 mg, 0.15 mmol) was dissolved in DMF. Copper (I) iodide, L-proline (4 mg, 0.03 mmol) and potassium phosphate (63 mg, 0.29 mmol) were added and the reaction mixture was stirred for 10 min. at RT. 4-(1-bromo-3,3-dimethylbut-1-en-2-yl)pyridine (43 mg, 0.18 mmol) was added dropwise and the reaction mixture was purged with nitrogen. The reaction mixture was heated overnight at 85° C. (prolonged heating in some cases was required). DMF was evaporated under reduced pressure, the residue was diluted with water and the solid was filtered. The solid material was purified by silica gel chromatography (100-200 mesh) eluting with 0-7% MeOH-DCM. The product was further purified by HPLC. 1H NMR (CD3OD, freebase) δ (ppm): 8.21 (d, 2H), 7.15 (m, 3H), 7.05 (s, 1H), 6.94 (d, 1H), 6.80 (s, 1H), 3.90 (s, 2H), 3.18 (t, 2H), 2.90 (t, 2H), 2.70 (s, 3H), 2.36 (s, 3H), 1.30 (s, 9H).

Workup

  1. customthe reaction mixture was purged with nitrogen
  2. temperatureThe reaction mixture was heated overnight at 85° C. (
  3. temperatureprolonged heating in some cases
  4. customDMF was evaporated under reduced pressure
  5. additionthe residue was diluted with water
  6. filtrationthe solid was filtered
  7. customThe solid material was purified by silica gel chromatography (100-200 mesh)
  8. washeluting with 0-7% MeOH-DCM
  9. customThe product was further purified by HPLC

Sources & evidence

ORD record
ord-8b35c1ccc40e43bc90ca1c17a9a0f4c5
Source dataset
uspto-grants-2014_12
Patent number
US08906925B2

Reaction notes

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