Piperidine → HCID 68818214, compound

Participants

Reaction Steps

Add piperidine (0.013 g, 0.151 mmol) to a solution of (R)-2-[(4S,5S)-3-Acetyl-4-(3,5-difluoro-benzyl)-2,2-dimethyl-oxazolidin-5-yl]-4-carboxymethyl-pyrrolidine-1-carboxylic acid tert-butyl ester (mixture of isomers) (0.05 g, 0.101 mmol), bromo tris-pyrrolidinophosphonium hexafluorophosphate (0.094 g, 0.201 mmol), dimethylamino-pyridine (0.001 g, 0.01 mmol) and triethylamine (0.021 mL, 0.151 mmol) in 2.2 mL of dichloromethane. Stir the reaction overnight. Concentrate under reduced pressure and subject the residue to silica gel chromatography, eluting with hexane/ethyl acetate (70% gradient to 100%) to provide both isomers of the desired compound. The 4(R) isomer is the slower eluting (0.033 g, 60%).

Provenance & Evidence