Potassium Phosphate, Tribasic → HCID 44242798, compound

HRID 1775986Notes

Reaction equation

HRID 1775986 reaction equation
[CH2:1]([CH:3]1[C:8]2[NH:9][C:10]3[C:15]([C:7]=2[CH2:6][CH2:5][N:4]1[CH3:17])=[CH:14][C:13]([CH3:16])=[CH:12][CH:11]=3)[CH3:2].N1CCC[C@H]1C(O)=O.[O-]P([O-])([O-])=O.[K+].[K+].[K+].Br[CH:35]=[C:36]([C:38]1[CH:43]=[CH:42][C:41]([F:44])=[C:40]([F:45])[CH:39]=1)[CH3:37]>CN(C=O)C.[Cu]I>[F:45][C:40]1[CH:39]=[C:38](/[C:36](/[CH3:37])=[CH:35]/[N:9]2[C:10]3[C:15](=[CH:14][C:13]([CH3:16])=[CH:12][CH:11]=3)[C:7]3[CH2:6][CH2:5][N:4]([CH3:17])[CH:3]([CH2:1][CH3:2])[C:8]2=3)[CH:43]=[CH:42][C:41]=1[F:44]

Participants

7

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 145742L-ProlineHCID 669117191-ethyl-2,6-dimethyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indoleHCID 866355044-(1-Bromoprop-1-en-2-yl)-1,2-difluorobenzene

Product 1

HCID 44242798HCID 44242798, compoundYield 18.3%

Reagents, catalysts & solvents 2

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

Procedure

1-ethyl-2,6-dimethyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole (82 mg, 0.36 mmol) was dissolved in DMF (6 mL). To this solution was added CuI (8 mg, 0.036 mmol), L-proline (9 mg, 0.086 mmol), K3PO4 (183 mg, 0.86 mmol). The reaction mixture was stirred for 10 min at room temperature followed by addition of 4-(1-bromoprop-1-en-2-yl)-1,2-difluorobenzene (100 mg, 0.43 mmol). The reaction mixture was heated at 80° C. for 18 h. Solvent was evaporated under reduced pressure, the residue was diluted with brine and extracted with ethyl acetate. Organic layer was dried over Na2SO4, and concentrated under reduced pressure. The crude product was purified by silica gel chromatography to obtain 25 mg of (E)-9-(2-(3,4-difluorophenyl)prop-1-enyl)-1-ethyl-2,6-dimethyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole. 1H NMR (DMSO) OXALATE SALT 7.80 (m, 1H), 7.56 (m, 2H), 7.38 (s, 1H), 7.20 (s, 1H), 7.05 (m, 2H), 3.80 (m, 3H), 3.18 (s, 3H), 3.0 (m, 2H), 2.80 (m, 2H), 2.40 (s, 3H), 1.82 (s, 3H), 0.95 (t, 3H).

Workup

  1. temperatureThe reaction mixture was heated at 80° C. for 18 h
  2. customSolvent was evaporated under reduced pressure
  3. additionthe residue was diluted with brine
  4. extractionextracted with ethyl acetate
  5. dry with materialOrganic layer was dried over Na2SO4
  6. concentrationconcentrated under reduced pressure
  7. customThe crude product was purified by silica gel chromatography

Sources & evidence

ORD record
ord-86382732ec2e4facb09499e5484f1012
Source dataset
uspto-grants-2016_02
Patent number
US09260429B2

Reaction notes

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