Potassium Phosphate, Tribasic → 2-(3,9-dimethyl-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)-N-isopropylacetamide

HRID 1481433Notes

Reaction equation

HRID 1481433 reaction equation
[CH3:1][N:2]1[CH2:15][CH2:14][C:13]2[C:12]3[CH:11]=[C:10]([CH3:16])[CH:9]=[CH:8][C:7]=3[NH:6][C:5]=2[CH2:4][CH2:3]1.N1CCC[C@H]1C(O)=O.[O-]P([O-])([O-])=O.[K+].[K+].[K+].Cl[CH2:34][C:35]([NH:37][CH:38]([CH3:40])[CH3:39])=[O:36]>[Cu]I.CN(C=O)C>[CH3:1][N:2]1[CH2:15][CH2:14][C:13]2[C:12]3[CH:11]=[C:10]([CH3:16])[CH:9]=[CH:8][C:7]=3[N:6]([CH2:34][C:35]([NH:37][CH:38]([CH3:40])[CH3:39])=[O:36])[C:5]=2[CH2:4][CH2:3]1

Participants

7

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 761712-chloro-N-(1-methylethyl)acetamideHCID 145742L-ProlineHCID 685600921,2,3,4,5,6-Hexahydro-3,9-dimethylazepino[4,5-b]indole

Product 1

HCID 593684752-(3,9-dimethyl-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)-N-isopropylacetamideYield 4.9%

Reagents, catalysts & solvents 2

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

Procedure

The title compound was prepared by following general procedure 7. 3,9-Dimethyl-1,2,3,4,5,6-hexahydroazepino[4,5-b]indole (100 mg, 0.46 mmol), was taken into DMF. CuI (9 mg, 0.046 mmol), L-proline (11 mg, 0.093 mmol), K3PO4 (198 mg, 0.93 mmol) were added to the solution and stirred for 10 min. at RT. 2-Chloro-N-isopropylacetamide (76 mg, 0.56 mmol) was added dropwise. The reaction mixture was heated at 90° C. for 12 h. After completion of reaction, the reaction mixture was filtered through Celite. DMF was evaporated under reduced pressure and then extracted with ethyl acetate. The organic layer was dried over Na2SO4, and concentrated under reduced pressure to obtain 7 mg of 2-(3,9-dimethyl-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)-N-isopropylacetamide as the TFA salt after purification by reverse-phase chromatography (C-18, 500 mm×50 mm, Mobile Phase A=0.05% TFA in water, B=0.05% TFA in acetonitrile, Gradient: 10% B to 80% B in 30 min., injection vol. 5 mL).

Workup

  1. customThe title compound was prepared
  2. temperatureThe reaction mixture was heated at 90° C. for 12 h
  3. customAfter completion of reaction
  4. filtrationthe reaction mixture was filtered through Celite
  5. customDMF was evaporated under reduced pressure
  6. extractionextracted with ethyl acetate
  7. dry with materialThe organic layer was dried over Na2SO4
  8. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-2c467cc8f83446fea871137d06c1f69c
Source dataset
uspto-grants-2016_08
Patent number
US09409910B2

Reaction notes

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