Triethylamine → 2-(2-{2-(2-methoxyethyl)-1-[3-(2-oxopyrrolidin-1-yl)propyl]-1H-imidazo[4,5-c]quinolin-8-yl}ethenyl)-1H-isoindole-1,3(2H)-dione

HRID 244868Notes

Reaction equation

HRID 244868 reaction equation
[CH:1]([N:3]1[C:7](=[O:8])[C:6]2=[CH:9][CH:10]=[CH:11][CH:12]=[C:5]2[C:4]1=[O:13])=[CH2:2].C(N(CC)CC)C.Br[C:22]1[CH:31]=[CH:30][C:29]2[N:28]=[CH:27][C:26]3[N:32]=[C:33]([CH2:44][CH2:45][O:46][CH3:47])[N:34]([CH2:35][CH2:36][CH2:37][N:38]4[CH2:42][CH2:41][CH2:40][C:39]4=[O:43])[C:25]=3[C:24]=2[CH:23]=1>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.C(#N)C>[CH3:47][O:46][CH2:45][CH2:44][C:33]1[N:34]([CH2:35][CH2:36][CH2:37][N:38]2[CH2:42][CH2:41][CH2:40][C:39]2=[O:43])[C:25]2[C:24]3[CH:23]=[C:22]([CH:2]=[CH:1][N:3]4[C:7](=[O:8])[C:6]5[C:5](=[CH:12][CH:11]=[CH:10][CH:9]=5)[C:4]4=[O:13])[CH:31]=[CH:30][C:29]=3[N:28]=[CH:27][C:26]=2[N:32]=1

Participants

7

Reactant 3

HCID 8471TriethylamineHCID 770351H-Isoindole-1,3(2H)-dione, 2-ethenyl-HCID 219843071-{3-[8-bromo-2-(2-methoxyethyl)-1H-imidazo[4,5-c]quinolin-1-yl]propyl}pyrrolidin-2-one

Product 1

HCID 690814342-(2-{2-(2-methoxyethyl)-1-[3-(2-oxopyrrolidin-1-yl)propyl]-1H-imidazo[4,5-c]quinolin-8-yl}ethenyl)-1H-isoindole-1,3(2H)-dioneYield 101.6%

Reagents, catalysts & solvents 3

HCID 80271Tri-o-tolylphosphineCatalystHCID 167845palladium(II) acetateCatalystHCID 6342AcetonitrileSolvent

Conditions

Temperature
120 °C

Procedure

A thick walled glass tube, equipped with a stir bar, was charged with palladium (II) acetate (17 mg, 0.08 mmol), acetonitrile (50 mL), N-vinylphthalimide (716 mg, 4.13 mmol), triethylamine (1.6 mL, 11 mmol), tri-o-tolylphosphine (69 mg, 0.22 mmol) and 1-{3-[8-bromo-2-(2-methoxyethyl)-1H-imidazo[4,5-c]quinolin-1-yl]propyl}pyrrolidin-2-one (1.62 g, 3.76 mmol). The reaction mixture was purged with nitrogen and the tube was sealed and heated at 120° C. in an oil bath for 15 hours. The reaction was cooled to ambient temperature and methanol (50 mL) and chloroform (50 ml) were added. After filtering through a 0.2 micron PTFE membrane, the solution was concentrated under reduced pressure and then purified by chromatography using a HORIZON HPFC system (silica cartridge, eluting with a 0-8% gradient of methanol in dichloromethane) to provide 2.0 g of 2-(2-{2-(2-methoxyethyl)-1-[3-(2-oxopyrrolidin-1-yl)propyl]-1H-imidazo[4,5-c]quinolin-8-yl}ethenyl)-1H-isoindole-1,3(2H)-dione as a bright yellow solid.

Workup

  1. customA thick walled glass tube, equipped with a stir bar
  2. customThe reaction mixture was purged with nitrogen
  3. customthe tube was sealed
  4. temperatureThe reaction was cooled to ambient temperature
  5. additionmethanol (50 mL) and chloroform (50 ml) were added
  6. filtrationAfter filtering through a 0.2 micron PTFE membrane
  7. concentrationthe solution was concentrated under reduced pressure
  8. custompurified by chromatography
  9. washeluting with a 0-8% gradient of methanol in dichloromethane)

Sources & evidence

ORD record
ord-14ff085203a346ac8f5fbe8d490f62ad
Source dataset
uspto-grants-2014_02
Patent number
US08658666B2

Reaction notes

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