Potassium Phosphate, Tribasic → (E)-5-(2-(4-chlorophenyl)prop-1-enyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

HRID 1400412Notes

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:36]1[CH:41]=[CH:40][C:39]([Cl:42])=[CH:38][CH:37]=1)[CH3:35]>CN(C=O)C.[Cu]I>[Cl:42][C:39]1[CH:40]=[CH:41][C:36](/[C:34](/[CH3:35])=[CH:33]/[N:6]2[C:7]3[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][C:12]=3[C:4]3[CH2:3][N:2]([CH3:1])[CH2:15][CH2:14][C:5]2=3)=[CH:37][CH:38]=1

Participants

Conditions

Temperature: 80 °C

Procedure

2,8-Dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (36 mg, 0.181 mmol) was dissolved in DMF (4 mL). Copper (I) iodide (4 mg, 0.0181 mmol), L-proline (4 mg, 0.0362 mmol) and potassium phosphate (77 mg, 0.362 mmol) were added and the reaction mixture was stirred for min. at RT. 1-(1-Bromoprop-1-en-2-yl)-4-chlorobenzene (50 mg, 0.2183 mmol) was added dropwise and the reaction mixture was purged with nitrogen. The reaction mixture was heated overnight at 80° 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). Yield: 90 mg

Workup

customat RT
customthe reaction mixture was purged with nitrogen
temperatureprolonged heating in some cases
customDMF was evaporated under reduced pressure
additionthe residue was diluted with water
filtrationthe solid was filtered
customThe solid material was purified by silica gel chromatography (100-200 mesh)

Sources & evidence

ORD record: ord-80bdedd4a88f4b8a8f276fb7536facc9
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08906925B2

Reaction notes

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