Reaktion #160647

ord-82c2f33ebd1648c0a2f6726b2106d8cb

Lösungsmittel

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    Einengenconcentrated
  2. 2
    workup.ADDITIONdiluted with chloroform
  3. 3
    WaschenThe organic layer was washed with brine
  4. 4
    Trocknendried over Na2SO4
  5. 5
    Filtrationfiltered
  6. 6
    Einengenconcentrated
  7. 7
    Sonstigepurified by flash chromatography on a silica gel column (chloroform:methanol, 95:5 spiked with acetic acid)

Vorschrift

To a stirred solution Ethyl 2-(3-(benzyloxy)phenyl)acetate (Step A, 5.00 g, 18.5 mmol) in absolute ethanol (100 ml) was added 1N NaOH (40 ml) at room temperature. The reaction mixture was stirred for 3 hours, or until all the starting material is gone, concentrated and diluted with chloroform and acidified by 1M HCl to bring the pH to 3.5-4. The organic layer was washed with brine, dried over Na2SO4, filtered, concentrated and purified by flash chromatography on a silica gel column (chloroform:methanol, 95:5 spiked with acetic acid) to give the title compound as white solid.

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US08829058B2uspto-grants-2014_09