Reaction #69607

ord-e2cbda05e6034070a2856d40446509c2

Solvents

Conditions

Temperature
-80°CELSIUS
Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    TemperatureThis mixture was slowly warmed to room temperature
  2. 2
    OtherThe resulting mixture was evaporated to dryness
  3. 3
    OtherThe product was isolated by flash chromatography on silica gel 60 (40-63 um, eluent: from hexanes to hexanes-diethyl ether=40:1, vol.)

Procedure

To a solution of 4.22 g (20.0 mmol) of 9 in 50 mL of THF, 48.0 mL (26.0 mmol) of 0.55 M BnMgCl in THF was added with vigorous stirring at −80° C. This mixture was slowly warmed to room temperature, and then 2 mL of water was added. The resulting mixture was evaporated to dryness. The product was isolated by flash chromatography on silica gel 60 (40-63 um, eluent: from hexanes to hexanes-diethyl ether=40:1, vol.) to give 5.83 g (96%) of B3.

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US08530593B2uspto-grants-2013_09