Table 1. Alkaline Hydrolysis of Aryltriphenylphosphonium Bromides.

^aReaction conditions:¹⁸ reflux, 20% NaOH. The yields of Ph₃PO are in the parentheses.

^bReaction conditions:²⁵ reflux, 1 M NaOH. nd = not detected.

^cReaction conditions: phosphonium bromide 1 (0.5 mmol), 3 M NaOH (2 mL), rt, overnight or refluxed for 3 h.

^dPhCOOH was also isolated in 97% yield.

^ePhenanthracene was also isolated in 93%.