Triphenylphosphine → HCID 69270257, compound

Participants

Reaction Conditions

Reaction Steps

Add triphenylphosphine (600 mg, 2.29 mmol) to a solution of diethyl azodicarboxylate (0.36 mL, 2.29 mmol) in methylene chloride (10 ml) at 0° C. followed by ethylene glycol mono-t-butyl ether (0.30 mL, 2.29 mmol), and stir the mixture for 20 minutes at 0° C. Add 5-hydroxyindole (200 mg, 1.5 mmol), remove the cold bath, and stir for 5 hours. Add water (2 mL), transfer the resultant mixture to a separatory funnel, and separate the layers. Wash the organic layer with 0.1 N aqueous HCl and brine, then dry over sodium sulfate, filter, and concentrate. Purification by flash chromatography and eluting with hexane:ethyl acetate gives 127 mg (36%) of the title compound as a light yellow solid. Mass spectrum: electrospray (m/z) 232 (M−−1).

Provenance & Evidence