Reacción #216647

ord-32d5492c11434535bc5e7d9211c06e5a

Condiciones de reacción

Condiciones detalladas
See reaction.notes.procedure_details.

Tratamiento posterior

  1. 1
    Temperaturaat reflux temperature under a nitrogen atmosphere
  2. 2
    Temperaturathe reaction mixture was cooled
  3. 3
    Filtraciónfiltered
  4. 4
    OtroThe filtrate was evaporated

Procedimiento

22.3 g of methyl 4'-methyl-(1,1'biphenyl)-2-carboxylate were dissolved in 900 ml of tetrachloromethane under a nitrogen flow. Then there were added 17.8 g of 1-bromo-2,5-pyrrolidinedione and a catalytic amount of dibenzoyl peroxide. After stirring for 2.5 hours at reflux temperature under a nitrogen atmosphere, the reaction mixture was cooled and filtered. The filtrate was evaporated, yielding >30 g (100% ) of methyl 4'-(bromomethyl)[1,1'-biphenyl]-2-carboxylate as a crude residue (interm. 44).

Fuente

DOI: 10.6084/m9.figshare.5104873.v1Patente: US05468743uspto-grants-1995_11