Potassium Phosphate, Tribasic → (E)-9-chloro-3-methyl-6-(2-(pyridin-3-yl)prop-1-enyl)-1,2,3,4,5,6-hexahydroazepino[4,5-b]indole

HRID 1045604Notes

Reaction equation

HRID 1045604 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]([CH3:16])[CH2:14][CH2:15][C:5]=3[C:4]=2[CH:3]=1.N1CCC[C@H]1C(O)=O.[O-]P([O-])([O-])=O.[K+].[K+].[K+].Br[CH:34]=[C:35]([C:37]1[CH:38]=[N:39][CH:40]=[CH:41][CH:42]=1)[CH3:36]>CN(C=O)C.[Cu]I>[Cl:1][C:2]1[CH:10]=[CH:9][C:8]2[N:7](/[CH:34]=[C:35](/[C:37]3[CH:38]=[N:39][CH:40]=[CH:41][CH:42]=3)\[CH3:36])[C:6]3[CH2:11][CH2:12][N:13]([CH3:16])[CH2:14][CH2:15][C:5]=3[C:4]=2[CH:3]=1

Participants

7

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 145742L-ProlineHCID 571825283-(1-Bromoprop-1-en-2-yl)pyridineHCID 685585079-Chloro-3-methyl-1,2,3,4,5,6-hexahydroazepino[4,5-b]indole

Product 1

HCID 59368299(E)-9-chloro-3-methyl-6-(2-(pyridin-3-yl)prop-1-enyl)-1,2,3,4,5,6-hexahydroazepino[4,5-b]indole

Reagents, catalysts & solvents 2

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

Procedure

9-Chloro-3-methyl-1,2,3,4,5,6-hexahydroazepino[4,5-b]indole (200 mg, 0.85 mmol) was dissolved in DMF (6 mL), CuI (16 mg, 0.085 mmol), L-proline (19 mg, 0.17 mmol), K3PO4 (364 mg, 1.70 mmol) were added and stirred for 10 min. at RT. 3-(1-Bromoprop-1-en-2-yl)pyridine (203 mg, 1.02 mmol) was added dropwise and the reaction mixture was heated at 90° C. for 18 h. DMF was evaporated under reduced pressure and the reaction mixture was poured into water (10 mL). The aqueous mixture was extracted with ethyl acetate. The organic layer was dried over Na2SO4, and concentrated under reduced pressure to obtain the crude compound which was purified by column chromatography to 140 mg of the desired compound. 1HNMR (CD3OD, TFA salt) δ (ppm): 9.10 (s, 1H), 8.80 (s, 1H), 8.62 (d, 1H), 7.90 (m, 1H), 7.60 (s, 1H), 7.38 (s, 1H), 7.20 (m, 2H), 3.80 (m, 2H), 3.42 (m, 4H), 3.22 (m, 2H), 3.10 (s, 3H), 2.0 (s, 3H).

Workup

  1. temperaturethe reaction mixture was heated at 90° C. for 18 h
  2. customDMF was evaporated under reduced pressure
  3. additionthe reaction mixture was poured into water (10 mL)
  4. extractionThe aqueous mixture was extracted with ethyl acetate
  5. dry with materialThe organic layer was dried over Na2SO4
  6. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-4cb0bc7854984cf7a7a03352a965020a
Source dataset
uspto-grants-2013_10
Patent number
US08569287B2

Reaction notes

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