Sodium Carbonate → 4'-[6-(dimethylamino)pyridin-3-yl]-1'-pentylspiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)-one

HRID 645195Notes

Reaction equation

HRID 645195 reaction equation
[CH3:1][N:2]([CH3:12])[C:3]1[N:8]=[CH:7][C:6](B(O)O)=[CH:5][CH:4]=1.Br[C:14]1[CH:22]=[CH:21][CH:20]=[C:19]2[C:15]=1[C:16]1([C:32]3=[CH:33][C:34]4[O:38][CH2:37][O:36][C:35]=4[CH:39]=[C:31]3[O:30][CH2:29]1)[C:17](=[O:28])[N:18]2[CH2:23][CH2:24][CH2:25][CH2:26][CH3:27].C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:1][N:2]([CH3:12])[C:3]1[N:8]=[CH:7][C:6]([C:14]2[CH:22]=[CH:21][CH:20]=[C:19]3[C:15]=2[C:16]2([C:32]4=[CH:33][C:34]5[O:38][CH2:37][O:36][C:35]=5[CH:39]=[C:31]4[O:30][CH2:29]2)[C:17](=[O:28])[N:18]3[CH2:23][CH2:24][CH2:25][CH2:26][CH3:27])=[CH:5][CH:4]=1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 27632716-(Dimethylamino)pyridine-3-boronic acidHCID 592633394'-bromo-1'-pentylspiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)one

Product 1

HCID 119985854'-[6-(dimethylamino)pyridin-3-yl]-1'-pentylspiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)-one

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Procedure

To an oven-dried flask was charged with [6-(dimethylamino)pyridin-3-yl]boronic acid (37.0 mg, 0.17 mmol), Pd(PPh3)4 (13.5 mg, 0.012 mmol) followed by flashing with nitrogen. To the flask was added a solution of 4′-bromo-1′-pentylspiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one (50.0 mg, 0.12 mmol) in anhydrous dioxane (2.00 mL) followed by the addition of 2.0 M Na2CO3 (0.24 mL). The reaction mixture was heated at reflux for 48 h. After cooling down to ambient temperature, the solvent was removed under reduced pressure. The residue was diluted with ethyl acetate (2.00 mL), washed with saturated ammonium chloride (2.00 mL), and concentrated in vacuo to dryness. The residue was subjected to column chromatography to yield the title compounds: 1H NMR (300 MHz, CDCl3) δ 7.77 (d, 1H), 7.32 (t, 1H), 6.87 (dd, 2H), 6.71 (dd, 1H), 6.23 (d, 1H), 6.20 (s, 1H), 5.88 (d, 2H), 4.56 (ABq, 2H), 3.89-3.80 (m, 1H, 3.69-3.59 (m, 1H), 3.05 (s, 6H), 1.78-1.69 (m, 2H), 1.39-1.35 (m, 4H), 0.90 (t, 3H); 13C NMR (75 MHz, CDCl3) δ 177.9, 158.3, 156.1, 148.8, 147.3, 142.9, 142.0, 137.8, 137.2, 129.9, 128.9, 125.6, 122.0, 121.0, 107.6, 104.3, 102.5, 101.5, 93.6, 77.8, 58.5, 40.5, 38.2, 29.1, 27.2, 22.4, 14.0; MS (ES+, m/z) 472.0 (M+1).

Workup

  1. temperatureThe reaction mixture was heated
  2. temperatureat reflux for 48 h
  3. customthe solvent was removed under reduced pressure
  4. additionThe residue was diluted with ethyl acetate (2.00 mL)
  5. washwashed with saturated ammonium chloride (2.00 mL)
  6. concentrationconcentrated in vacuo to dryness

Sources & evidence

ORD record
ord-280385f2e6844a49bd43586f181d2293
Source dataset
uspto-grants-2010_04
Patent number
US07700641B2

Reaction notes

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