Triphenylphosphine → HCID 68479666, compound

Participants

Reaction Steps

A mixture of 1 g (3 mmol) (3SR,4SR)-3-(3,4-Difluoro-phenyl)-4-hydroxymethyl-piperidine-1-carboxylic acid tert-butyl ester, 0.59 g (4.5 mmol) 5-chloro-2-hydroxy pyridine, 1.1 g (4.8 mmol) di-tert-butyl azodicarboxylate and 2.42 g (5 mmol) triphenylphosphine (polymer bound) in 70 mL THF was stirred at room temperature over night. the mixture was filtered through decalite and evaporated to dryness. The residue was subjected to column chromatography on silica eluting with a gradient formed from ethyl acetate and heptane to afford after evaporation of the product containing fractions 1.2 g (91%) of the title compound as viscous colorless oil. MS (m/e): 439.1 [(M+H)+].

Provenance & Evidence