反応 #2945

ord-fc50405695d1443a80eda06a3dd99d45

試薬

なし

溶媒

反応条件

詳細条件
See reaction.notes.procedure_details.

後処理

  1. 1
    その他as described in preparation 7
  2. 2
    その他The solvent was removed in vacuo
  3. 3
    その他the residue was purified by chromatography on silica gel (EtOAc/MeOH 0%→1%)

実験手順

9 ml (0.05 mol) of diketene-acetone adduct and a solution of 4.2 ml (0.05 mol) of pyrrolidine in 20 ml of toluene were treated as described in preparation 7. The solvent was removed in vacuo and the residue was purified by chromatography on silica gel (EtOAc/MeOH 0%→1%) yielding 7.6 g of the title compound as a dark oil.

出典

DOI: 10.6084/m9.figshare.5104873.v1特許: US05731322uspto-grants-1998_03