Phthalimide → HCID 57707834, compound

HRID 216896Notes

Reaction equation

HRID 216896 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[C:9]([CH:22](O)[CH3:23])=[N:10][C:11]2[C:16]([N:17]=1)=[C:15]([C:18]([F:21])([F:20])[F:19])[CH:14]=[CH:13][CH:12]=2.O1CCCC1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[C:49]1(=[O:59])[NH:53][C:52](=[O:54])[C:51]2=[CH:55][CH:56]=[CH:57][CH:58]=[C:50]12.N(C(OC(C)C)=O)=NC(OC(C)C)=O>>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[C:9]([CH:22]([N:53]2[C:49](=[O:59])[C:50]3[C:51](=[CH:55][CH:56]=[CH:57][CH:58]=3)[C:52]2=[O:54])[CH3:23])=[N:10][C:11]2[C:16]([N:17]=1)=[C:15]([C:18]([F:20])([F:21])[F:19])[CH:14]=[CH:13][CH:12]=2

Participants

6

Reactant 5

HCID 6809PhthalimideHCID 8028TetrahydrofuranHCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 57707773HCID 57707773, compound

Product 1

HCID 57707834HCID 57707834, compound

Procedure

To a solution of 1-(3-(2-chlorophenyl)-5-(trifluoromethyl)quinoxalin-2-yl)ethanol (0.08980 g, 0.2546 mmol) in tetrahydrofuran (2.546 mL, 0.2546 mmol) were added triphenylphosphine (0.2003 g, 0.7637 mmol), phthalimide (0.1124 g, 0.7637 mmol), and diisopropyl azodicarboxylate (0.1504 mL, 0.7637 mmol). The reaction mixture was stirred at room temperature. After 1 h, the mixture was concentrated under reduced pressure and partitioned between EtOAc (100 mL) and brine (100 mL). The organic layer was dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography on a 40 g of Redi-Sep™ column using 0 to 50% gradient of EtOAc in hexane over 20 min and 50% isocratic of EtOAc for 10 min as eluent to give 2-(1-(3-(2-chlorophenyl)-5-(trifluoromethyl)quinoxalin-2-yl)ethyl)-isoindoline-1,3-dione as a yellow solid: LC-MS (ESI) m/z 482.0 [M+H]+.

Workup

  1. concentrationthe mixture was concentrated under reduced pressure
  2. custompartitioned between EtOAc (100 mL) and brine (100 mL)
  3. dry with materialThe organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography on a 40 g of Redi-Sep™ column
  7. customover 20 min

Sources & evidence

ORD record
ord-f03916a7605b4a7cbcd975d03f3c6aaa
Source dataset
uspto-grants-2012_06
Patent number
US08193199B2

Reaction notes

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