Diisopropylamine → HCID 59438430, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 78.4 ul (0.555 mmol) diisopropylamine in 2 ml THF were added 347 ul (0.555 mmol) of a 1.6M n-BuLi solution in hexane at −5° C. The solution was stirred for 15 minutes at 0° C. and then cooled to −70° C. A solution of 100 mg (0.427 mmol) rac-1-methyl-5-nitro-5-phenyl-piperidin-2-one in 1 ml THF was added dropwise. The brown solution was stirred at −70° C. for 45 minutes. A solution of 180 mg (0.555 mmol) N-fluorobenzenesulphonimide in 1 ml THF was added dropwise. The mixture was stirred at −70° C. for 1.5 hour, quenched with 2 ml of a 20% NH4Cl solution and allowed to warm to room temperature. Water and ethyl acetate were added. The aqueous layer was extracted twice with ethyl acetate. The combined organic layers were dried over sodium sulfate, filtered and concentrated in vacuo. The crude oil was purified on silica gel (Eluent: Heptane/ethyl acetate 0 to 100%) to provide 58 mg (54%) of the title compound as a light yellow solid. MS (m/e): 253.2 (M+H).

Provenance & Evidence