HCID 12010730, compound → HCID 12010731, compound

Participants

Reaction Steps

29 mg (0.05 mmol) of (−)-2-benzoylamino-2′-diphenylphosphinyl-1,1′-binaphthyl (the formula (1-2c-1)) was dissolved in 1.3 ml of tetrahydrofuran under the flow of nitrogen. To the solution, 88 μl (0.18 mmol) of tetrahydrofuran solution (2M) of borane-dimethyl sulfide complex was added at 0° C., followed by the stirring for 18 hours at 88° C. The reaction solution was extracted with 50 ml of ethyl acetate. The extract was washed with 10 ml of saturated solution of ammonium chloride and 10 ml of brine, and then dried over anhydrous sodium sulfate. The solvent was evaporated under a reduced pressure. To the residue, 1.5 ml of diethylamine was added and stirred under room temperature for 5 hours. Diethylamine was evaporated under a reduced pressure and the residue was purified using a silica gel column chromatography (eluent: 1:20 mixture of ethyl acetate and hexane) to obtain 24 mg of the titled compound.

Provenance & Evidence