Triphenylphosphine → 3-(3-Bromopropoxy)benzonitrile

Participants

Reaction Steps

3-Cyanophenol (10.0 g, 84 mM), 3-bromopropanol (20.3 mL, 114 mM), triphenylphosphine (29.7 g, 114 mM) were stirred in anhydrous THF (40 mL) at room temperature and treated with diethylazodicarboxylate (17.8 mL, 114 mM) dropwise over 5 min. under an atmosphere of nitrogen. This mixture stirred for about 5 hours then diluted with ether (500 mL) and filtered through Celite™. The filtrate was concentrated to a reddish oil which was again dissolved in ether (250 mL), diluted with hexanes (200 mL) and filtered. The filtrates were concentrated then filtered through a silica pad (300 g) eluting with 35% acetone/hexanes to collect the desired product as a yellow oil, 16.85 g. This material was used in its crude form.

Provenance & Evidence