Methyl iodide → 3-(5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-1-yl)-4(1-methylindol-3-yl)-1-methyl pyrrole-2,5-dione

HRID 2234897Notes

Reaction equation

HRID 2234897 reaction equation
[C:1]1([C:13]2[C:14](=O)[NH:15][C:16](=[O:27])[C:17]=2[C:18]2[C:26]3[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=3)[NH:20][CH:19]=2)[C:11]2=[C:12]3[C:7](=[CH:8][CH:9]=[CH:10]2)[CH2:6][CH2:5][CH2:4][N:3]3[CH:2]=1.[C:29](=[O:32])([O-])[O-].[K+].[K+].CI.[C:37](OCC)(=O)C>CN(C)C=O>[C:1]1([C:13]2[C:29](=[O:32])[N:15]([CH3:14])[C:16](=[O:27])[C:17]=2[C:18]2[C:26]3[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=3)[N:20]([CH3:37])[CH:19]=2)[C:11]2=[C:12]3[C:7](=[CH:8][CH:9]=[CH:10]2)[CH2:6][CH2:5][CH2:4][N:3]3[CH:2]=1

Participants

6

Reactant 4

HCID 6328Methyl iodideHCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 99692093-(5,6-Dihydro-4H-pyrrolo[3,2,1-ij]quinolin-1-yl)-4-(1H-indol-3-yl)-1H-pyrrole-2,5-dione

Product 1

HCID 670170503-(5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-1-yl)-4(1-methylindol-3-yl)-1-methyl pyrrole-2,5-dione

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 3-(5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-1-yl)-4(1H-indol-3-yl) pyrrole-2,5-dione (100 mg, see Example 1) in anhydrous dimethylformamide (5 ml) was added potassium carbonate (0.5 g) and methyl iodide (0.1 ml). The mixture was stirred at room temperature for 48 hours then poured into ethyl acetate. (100 ml), washed with water (100 ml), dried over anhydrous sodium sulfate and evaporated to give 3-(5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-1-yl)-4(1-methylindol-3-yl)-1-methylpyrrole-2,5-dione as a red solid (93 mg). Step 2: To a solution of 3-(5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-1-yl)-4(1-methylindol-3-yl)-1-methylpyrrole-2,5-dione (93 mg) in methanol (5 ml) and ethylacetate (5 ml) was added 10% Pd—C (50 mg) and the mixture stirred at room temperature under 1 atmosphere of hydrogen for 48 hours. Toluene (50 ml) was added and the mixture again stirred at room temperature under 1 atmosphere of hydrogen for 2 hours. The mixture was then filtered through a pad of celite and evaporated to dryness to yield a residue. The residue was purified using silica gel chromatography eluting with 35-40% ethylacetate in hexanes to give (±)-cis-3-(5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-1-yl)-4(1-methylindol-3-yl)-1-methylpyrrolidine-2,5-dione as a pale yellow solid (53 mg). 1H NMR (CDCl3) 400 MHz δ: 7.23 (s, 1H), 7.05-7.07 (m, 2H), 7.01 (d, 1H, J=7.2 Hz), 6.92-6.97 (m, 1H), 6.85 (t, 1H, J=7.2 Hz), 6.74 (d, 1H, J=6.8 Hz), 6.64 (d, 2H, J=6.4 Hz), 4.78 (m, 2H), 3.75-3.84 (m, 2H), 3.45 (s, 3H), 3.27 (s, 3H), 2.79 (t, 2H, J=5.6 Hz), 1.98 (m, 2H).

Workup

  1. wash(100 ml), washed with water (100 ml)
  2. dry with materialdried over anhydrous sodium sulfate
  3. customevaporated

Sources & evidence

ORD record
ord-0486041ce55e42ddb4c10ce9e55ba106
Source dataset
uspto-grants-2010_05
Patent number
US07713969B2

Reaction notes

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