Reacción #2269956

ord-67bf875a69944e3dbca6094a40420fc2

Disolventes

Condiciones de reacción

Condiciones detalladas
See reaction.notes.procedure_details.

Tratamiento posterior

  1. 1
    Otro(˜10° C.)
  2. 2
    Otrowere separated
  3. 3
    Extracciónthe aqueous layer was extracted with DCE (200 mL)
  4. 4
    LavadoThe organic layer was washed with H2O (4×200 mL
  5. 5
    Otrountil no reaction to starch iodide
  6. 6
    Lavadoaqueous wash)
  7. 7
    Otrothen dried through a cotton plug
  8. 8
    workup.STIRRINGthe mixture was stirred for 2 minutes

Procedimiento

1,2,3,4-Tetrahydro-1,4-methano-naphthalene-2,3-diol (40 g, 227.3 mmol) was stirred in H2O (1050 mL) and 1,2-dichloroethane (DCE) (420 mL) in a 2 L round bottom flask under nitrogen with cool water bath (˜10° C.). To this sodium periodate (NaIO4) (51 g, 239 mmol) and triethylbenzyl ammonium chloride (Et3BnNCl) (50 mg) were added. The resulting mixture was stirred for 1 hour (slight initial exotherm), then the layers were separated and the aqueous layer was extracted with DCE (200 mL). The organic layer was washed with H2O (4×200 mL, or until no reaction to starch iodide is observed in the aqueous wash) then dried through a cotton plug. To this was added benzyl amine (25.5 g, 238.6 mmol) and the mixture was stirred for 2 minutes then immediately transferred into the sodium triacetoxyborohydride NaHB(OAc)3/DCE (see below) over 10 minutes.

Fuente

DOI: 10.6084/m9.figshare.5104873.v1Patente: US06897310B2uspto-grants-2005_05