Triphenylphosphine → HCID 89590639, compound

Participants

Reaction Conditions

Reaction Steps

A reaction tube was charged with the product of step 5 (200 mg, 0.326 mmol) and triphenylphosphine (855 mg, 3.26 mmol). The tube was sealed and THF (3259 μl) was added via syringe at 0° C. 3-dimethylamino-1-propanol (381 μl, 3.26 mmol) was added followed by slow addition of diisopropyl azodicarboxylate (631 μl, 3.26 mmol). After 5 minutes 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. for 3 hours. The reaction mixture was concentrated to dryness in rotavap and the residue was purified on a gold cap silica gel (80 g) column (gradient: 0 to 60% solvent B in dichloromethane (solvent B: 20% methanol in ethyl acetate)) to give the title compound (210 mg, 0.300 mmol, 92% yield) as a white powder.

Provenance & Evidence