반응 #53309

ord-61dfae4456944a69a2c78da00c340740

반응 조건

상세 조건
See reaction.notes.procedure_details.

후처리

  1. 1
    기타reaction mixture
  2. 2
    농축was concentrated
  3. 3
    기타purified by flash chromatography on silica gel column (EtOAc:Hex, 1:4)

실험 절차

To a ice cooled solution of Ethyl 4-(3-(2,6-dimethylbenzyloxy)phenyl)-4-oxobutyrate (Step C, 3 g, 9 mmol) in dry ether (70 ml) was added dropwise bromine (0.7971 g, 9.9 mmol) diluted in ether (30 ml). After 4 hours of stirring, reaction mixture was concentrated and purified by flash chromatography on silica gel column (EtOAc:Hex, 1:4) to provide the title compound.

출처

DOI: 10.6084/m9.figshare.5104873.v1특허: US06858602B2uspto-grants-2005_02