Dimethyl Sulfoxide → HCID 21476919, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 0.992 g (0.27 mmol) of the product of Example 1 in 0.5 mL of anhydrous THF was added 825 μL (0.82 mmol) of a 1.0M solution of lithium bis(trimethylsilyl)amide in THF at -78° C. under a nitrogen atmosphere. After stirring at -78° C. for 10 minutes, the starting material had not fully dissolved. The reaction mixture was then warmed to 0° C. (ice-water bath) and 300 μL of DMSO was added which resulted in a clear yellow solution, then 0.131 g (0.55 mmol) of α'-bromo-α,α,α-trifluoro-p-xylene was added as a solid. Stirring was maintained for 1 hour, then the reaction mixture was partitioned between EtOAc and water and extracted. The organic layer was washed with saturated brine, dried (MgSO4), filtered and evaporated. The residue was purified on a silica gel flash chromatography column eluted with 2.5% MeOH--CHCl3. Evaporation of the product fractions and drying in vacuo afforded 0.040 g (28%) of the title compound.

Provenance & Evidence