Benzyl Alcohol → (2RS,3SR)-2-benzyloxycarbonyl-5-oxotetrahydrofuran-3-carboxylic acid

HRID 1457733

Reaction equation

HRID 1457733 reaction equation
[O:1]=[C:2]1[O:6][CH:5]([C:7]([OH:9])=[O:8])[CH:4]([C:10]([OH:12])=[O:11])[CH2:3]1.C1(N=C=NC2CCCCC2)CCCCC1.[CH2:28](O)[C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1>CC(C)=O>[CH2:28]([O:8][C:7]([CH:5]1[CH:4]([C:10]([OH:12])=[O:11])[CH2:3][C:2](=[O:1])[O:6]1)=[O:9])[C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1

Participants

5

Reactant 3

HCID 244Benzyl AlcoholHCID 10868DicyclohexylcarbodiimideHCID 98259Tetrahydro-5-oxofuran-2,3-dicarboxylic acid

Product 1

HCID 18705291(2RS,3SR)-2-benzyloxycarbonyl-5-oxotetrahydrofuran-3-carboxylic acid

Reagents, catalysts & solvents 1

HCID 180AcetoneSolvent

Procedure

5.3 g of (2RS,3SR)-5-oxotetrahydrofuran-2,3-dicarboxylic acid was dissolved in 90 ml of acetone, and 6.6 g of N,N'-dicyclohexylcarbodiimide was added thereto, followed by stirring at room temperature for 2.5 hours. 3.3 ml of benzyl alcohol was added to the reaction solution, followed by stirring at the same temperature for 2 days. Insoluble matters were filtered off, and then the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=4/1→chloroform/methanol=50/1) to obtain 6.55 g of the above-identified compound as a yellow solid.

Workup

  1. stirringby stirring at the same temperature for 2 days
  2. filtrationInsoluble matters were filtered off
  3. concentrationthe filtrate was concentrated under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate=4/1→chloroform/methanol=50/1)

Sources & evidence

ORD record
ord-650808c48dbc4979a22dd0e9a62a951d
Source dataset
uspto-grants-1998_12
Patent number
US05849747

Linked notes

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