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8-chloro-2-methyl-1H,2H,3H,4H,5H-pyrido(4,3-b)indole → (Z)-8-chloro-5-(2-(2-chlorophenyl)prop-1-enyl)-2-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

HRID 1401519
Notes
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Reaction equation

HRID 1401519 reaction equation
[Cl:1][C:2]1[CH:10]=[CH:9][C:8]2[NH:7][C:6]3[CH2:11][CH2:12][N:13]([CH3:15])[CH2:14][C:5]=3[C:4]=2[CH: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][CH:39]=[CH:38][C:37]=1[Cl:42])[CH3:35]>CN(C=O)C.[Cu]I>[Cl:1][C:2]1[CH:10]=[CH:9][C:8]2[N:7](/[CH:33]=[C:34](\[C:36]3[CH:41]=[CH:40][CH:39]=[CH:38][C:37]=3[Cl:42])/[CH3:35])[C:6]3[CH2:11][CH2:12][N:13]([CH3:15])[CH2:14][C:5]=3[C:4]=2[CH:3]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 196158-chloro-2-methyl-1H,2H,3H,4H,5H-pyrido(4,3-b)indoleHCID 62657Potassium Phosphate, TribasicHCID 145742L-ProlineHCID 866424771-(1-Bromoprop-1-en-2-yl)-2-chlorobenzene

Product 1

HCID 59455085(Z)-8-chloro-5-(2-(2-chlorophenyl)prop-1-enyl)-2-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

Reagents, catalysts & solvents 2

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

Procedure

8-Chloro-2-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (220 mg, 1 mmol) was dissolved in DMF. Copper (I) iodide (19 mg, 0.1 mmol), L-proline (23 mg, 0.2 mmol) and potassium phosphate (424 mg, 2 mmol) were added and the reaction mixture was stirred for 10 min. at RT. 1-(1-Bromoprop-1-en-2-yl)-2-chlorobenzene (277 mg, 1.2 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 0-5% MeOH-DCM. Yield: 50 mg. 1H NMR (CD3OD, TFA salt) δ (ppm): 7.38 (d, 1H), 7.25 (m, 2H), 7.16-7.0 (m, 4H), 6.85 (s, 1H), 4.40 (m, 1H), 4.30 (m, 1H), 3.70 (m, 1H), 3.50 (m, 1H), 3.10 (m, 2H), 3.0 (s, 3H), 2.30 (s, 3H).

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 0-5% MeOH-DCM

Sources & evidence

ORD record
ord-a0f976ff0324434c9d86b58709a970b7
Source dataset
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08907097B2

Reaction notes

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