Ethyl Acetate → (S)-2-(2-Bromo-6-methyl-4-nitrophenyl)-2-tert-butoxyethyl pivalate

Participants

Reaction Conditions

Reaction Steps

To a solution of (S)-2-(2-bromo-6-methyl-4-nitrophenyl)-2-hydroxyethyl pivalate (65E) in t-butyl acetate at 0° C., was added HClO4 (perchloric acid) (5.45 ml) slowly, stirred at 0° C. for 5 min, then the reaction mixture was warmed up to rt and stirred for 3 hs. The mixture was diluted by EtOAc, washed by sat. NaHCO3, extracted by EtOAc, dry over MgSO4, filtered, concentrated down and purified by silica gel column, eluting by 0-100% EtOAc in Hexanes to give 65F (9 g, 85%).

Provenance & Evidence