Oxalic Acid → N-cyclohexyl-2-(3,9-dimethyl-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)acetamide

HRID 1481425Notes

Reaction equation

HRID 1481425 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]1[CH2:43][CH2:42][CH2:41][CH2:40][CH2:39]1)=[O:36].C(O)(=O)C(O)=O>[Cu]I.CN(C=O)C>[CH:38]1([NH:37][C:35](=[O:36])[CH2:34][N:6]2[C:7]3[CH:8]=[CH:9][C:10]([CH3:16])=[CH:11][C:12]=3[C:13]3[CH2:14][CH2:15][N:2]([CH3:1])[CH2:3][CH2:4][C:5]2=3)[CH2:43][CH2:42][CH2:41][CH2:40][CH2:39]1

Participants

8

Reactant 5

HCID 971Oxalic AcidHCID 62657Potassium Phosphate, TribasicHCID 145742L-ProlineHCID 2223652-Chloro-N-cyclohexylacetamideHCID 685600921,2,3,4,5,6-Hexahydro-3,9-dimethylazepino[4,5-b]indole

Product 1

HCID 59368307N-cyclohexyl-2-(3,9-dimethyl-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)acetamideYield 61.5%

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, 0.045 mmol), L-proline (11 mg, 0.093 mmol), K3PO4 (198 mg, 0.93 mmol) was added to the solution and stirred for 10 min. at RT. 2-chloro-N-cyclohexylacetamide (98 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 anhydrous Na2SO4, and concentrated under reduced pressure. And purified by column chromatography and then oxalate salt was made by using oxalic acid (35 mg, 0.46 mmol) to obtain 100 mg of N-cyclohexyl-2-(3,9-dimethyl-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)acetamide as the oxalate salt.

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 anhydrous Na2SO4
  8. concentrationconcentrated under reduced pressure
  9. customAnd purified by column chromatography

Sources & evidence

ORD record
ord-9466087812ed42baab7385ed0d9c6200
Source dataset
uspto-grants-2016_08
Patent number
US09409910B2

Reaction notes

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