Triphenylphosphine → (5-Carboxypentyl)triphenylphosphanium bromide

Participants

Reaction Steps

A solution of 6-bromohexanoic acid (10.00 g, 51.27 mmol) and triphenyl phosphine (14.12 g, 53.83 mmol) in freshly distilled acetonitrile (50 mL) was vigorously stirred and refluxed for 48 hours. The solution was allowed to come to ambient temperature and the Wittig salt was precipitated upon scratching the inside wall of the glass reaction vessel with a spatula. The white solid product was collected, washed with ether and filtered to provide the title compound in 98% yield (22.87 g): 1H NMR (400 MHz, CD3OD) δ 1.62-1.72 (m, 6H), 2.29 (t, 2H), 3.40-3.47 (m, 2H), 7.76-7.91 (m, 15H).

Provenance & Evidence