Triphenylphosphine → HCID 89590849, compound

Participants

Reaction Conditions

Reaction Steps

A reaction tube was charged with the product of step 5 (400 mg, 0.674 mmol) and triphenylphosphine (1414 mg, 5.39 mmol). The tube was sealed and THF (6737 μl) was added via syringe at 0° C. 4-hydroxy-1-methylpiperidine (633 μl, 5.39 mmol) was added followed by slow addition of diisopropyl azodicarboxylate (1044 μl, 5.39 mmol). After 5 min, the cooling bath was removed and the mixture was allowed to reach room temperature and stirred for 10 minutes. The reaction tube was heated at 40° C. LCMS showed complete reaction after 2 hours. The reaction mixture was concentrated to dryness in rotavap and the residue was purified on a gold cap silica gel (120 g) column (gradient: 0 to 50% solvent B in dichloromethane (solvent B: 20% methanol in ethyl acetate)) to give the title compound (450 mg, 0.651 mmol, 97% yield) as a white powder.

Provenance & Evidence