Trichloroacetonitrile → 2-(4-(Trifluoromethyl)phenyl)propan-2-yl 2,2,2-trichloroacetimidate

Participants

Reaction Steps

2-[4-(Trifluoromethyl)phenyl]propan-2-ol (Compound SP824) (27.0 g, 132 mmol) was azeotropically distilled with THF (54 ml) three times. This was dissolved in dehydrated THF (270 ml) under a nitrogen atmosphere, a solution of sodium bis(trimethylsilyl)amide in dehydrated THF (1.9 M, 13.9 ml, 26.4 mmol) was added and the mixture was stirred at room temperature for 30 minutes. Trichloroacetonitrile (13.3 ml, 132 mmol) was added thereto at 0° C., followed by stirring for 30 minutes. The reaction mixture was concentrated under reduced pressure, and the resulting residue was purified by amino silica gel column chromatography (hexane) to afford 2-(4-(trifluoromethyl)phenyl)propan-2-yl 2,2,2-trichloroacetimidate (Compound SP853) (86%, 39.7g).

Provenance & Evidence