Ethyl aluminium dichloride → (6-methoxy-2-methyl-1-(2-morpholinoethyl)-1H-indol-3-yl)(4-methylnaphthalen-1-yl)methanone

HRID 574613Notes

Reaction equation

HRID 574613 reaction equation
[CH3:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:5]([C:12](Cl)=[O:13])=[CH:4][CH:3]=1.[CH3:15][O:16][C:17]1[CH:25]=[C:24]2[C:20]([CH:21]=[C:22]([CH3:34])[N:23]2[CH2:26][CH2:27][N:28]2[CH2:33][CH2:32][O:31][CH2:30][CH2:29]2)=[CH:19][CH:18]=1.[Cl-].[Cl-].C([Al+2])C>C(Cl)Cl>[CH3:15][O:16][C:17]1[CH:25]=[C:24]2[C:20]([C:21]([C:12]([C:5]3[C:6]4[C:11](=[CH:10][CH:9]=[CH:8][CH:7]=4)[C:2]([CH3:1])=[CH:3][CH:4]=3)=[O:13])=[C:22]([CH3:34])[N:23]2[CH2:26][CH2:27][N:28]2[CH2:33][CH2:32][O:31][CH2:30][CH2:29]2)=[CH:19][CH:18]=1

Participants

5

Reactant 3

HCID 16686341Ethyl aluminium dichlorideHCID 248874124-Methylnaphthalene-1-carbonyl chlorideHCID 667645524-(2-(6-methoxy-2-methyl-1H-indol-1-yl)ethyl)morpholine

Product 1

HCID 68033060(6-methoxy-2-methyl-1-(2-morpholinoethyl)-1H-indol-3-yl)(4-methylnaphthalen-1-yl)methanone

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 4-methyl-1-naphthoyl chloride (11 mg, 0.055 mmol) and 4-(2-(6-methoxy-2-methyl-1H-indol-1-yl)ethyl)morpholine (15 mg, 0.055 mmol) in 1 mL CH2Cl2 at −70° C. was added dropwise ethyl aluminum dichloride (70 μL, 0.12 mmol, 1.8 M in toluene). The reaction mixture was allowed to slowly warm to room temperature overnight. The reaction mixture was then partitioned between ethyl acetate and cold H2O, and the aqueous layer extracted twice with ethyl acetate. The combined organic extract was washed successively with H2O, 10% K2CO3, and brine, dried over MgSO4, filtered, and concentrated in vacuo. The crude product was purified via silica gel chromatography using a gradient from 0 to 10% MeOH in CH2Cl2 to give CBX006 (4 mg, 0.009 mmol). 1H NMR (500 MHz, CDCl3, δ): 2.46 (s, 3H), 2.50-2.63 (m, 4H), 2.72 (t, J=7.1 Hz, 2H), 2.81 (s, 3H), 3.73 (t, J=4.5 Hz, 4H), 3.87 (s, 3H), 4.23 (t, J=7.1 Hz, 2H), 6.72 (dd, J=8.7 Hz, 2.2 Hz, 1H), 6.83 (d, J=2.2 Hz, 1H), 7.23 (d, J=8.7 Hz, 1H), 7.38 (d, J=7.1 Hz, 1H), 7.44-7.54 (m, 2H), 7.58 (t, J=7.6 Hz, 1H), 8.11 (d, J=8.4 Hz, 1H), 8.19 (d, J=8.4 Hz, 1H). MS m/z 443.4 [M+H]+.

Workup

  1. customThe reaction mixture was then partitioned between ethyl acetate and cold H2O
  2. extractionthe aqueous layer extracted twice with ethyl acetate
  3. extractionThe combined organic extract
  4. washwas washed successively with H2O, 10% K2CO3, and brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe crude product was purified via silica gel chromatography
  9. customto give CBX006 (4 mg, 0.009 mmol)

Sources & evidence

ORD record
ord-ad856fc35ecd4e9ab73f24d3d2acedb3
Source dataset
uspto-grants-2015_05
Patent number
US09034895B2

Reaction notes

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