Trifluoroacetic acid → HCID 19363269, compound

HRID 850504Notes

Reaction equation

HRID 850504 reaction equation
[CH2:1]([O:6][C:7]1[C:15]([O:16][CH2:17][CH2:18][CH2:19][CH2:20][CH3:21])=[CH:14][CH:13]=[C:12]2[C:8]=1[CH:9](O)[N:10]([CH2:23][CH2:24][C:25]1[CH:30]=[CH:29][C:28]([N+:31]([O-:33])=[O:32])=[CH:27][CH:26]=1)[C:11]2=[O:22])[CH2:2][CH2:3][CH2:4][CH3:5].C([SiH](CC)CC)C.FC(F)(F)C(O)=O.C(=O)([O-])O.[Na+]>ClCCl>[CH2:1]([O:6][C:7]1[C:15]([O:16][CH2:17][CH2:18][CH2:19][CH2:20][CH3:21])=[CH:14][CH:13]=[C:12]2[C:8]=1[CH2:9][N:10]([CH2:23][CH2:24][C:25]1[CH:30]=[CH:29][C:28]([N+:31]([O-:33])=[O:32])=[CH:27][CH:26]=1)[C:11]2=[O:22])[CH2:2][CH2:3][CH2:4][CH3:5]

Participants

6

Reactant 4

HCID 6422Trifluoroacetic acidHCID 12052TriethylsilaneHCID 516892Sodium BicarbonateHCID 19363248HCID 19363248, compound

Product 1

HCID 19363269HCID 19363269, compoundYield 86.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

4,5-Dipentyloxy-3-hydroxy-2-[2-(4-nitrophenyl)ethyl]-2,3-dihydroisoindol-1-one (1.04 g, 2.2 mmol, 1.0 eq) was dissolved in dichloromethane (20 ml), and triethylsilane (0.70 ml, 4.4 mmol, 2.0 eq) was added. The mixture was stirred for 10 minutes at room temperature. Trifluoroacetic acid (2.2 ml) was added dropwise thereto, and the mixture was further stirred for 4 hours. A saturated aqueous sodium hydrogencarbonate solution (40 ml) was added to this reaction mixture, and the mixture was extracted 3 times with ethyl acetate (30 ml). The organic layers were combined, washed with saturated brine (100 ml) and dried over anhydrous sodium sulfate. The drying agent was filtered off, and the filtrate was concentrated under reduced pressure to give 4,5-dipentyloxy-2-[2-(4-nitrophenyl)ethyl]-2,3-dihydroisoindol-1-one (868 mg, 86.8%) as pale-yellow crystals.

Workup

  1. stirringthe mixture was further stirred for 4 hours
  2. extractionthe mixture was extracted 3 times with ethyl acetate (30 ml)
  3. washwashed with saturated brine (100 ml)
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationThe drying agent was filtered off
  6. concentrationthe filtrate was concentrated under reduced pressure

Sources & evidence

ORD record
ord-651485f962fb4239b59aa30553eb0cc4
Source dataset
uspto-grants-2000_01
Patent number
US06017919

Reaction notes

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