Water → HCID 58174738, compound

Participants

Reaction Steps

Sodium hydroxide (1.82 g; 45.5 mol.) is dissolved in 50 mL of methanol and added dropwise under nitrogen to 4-[4-(dicyclohexylphosphino)-cyclohexyl]benzenesulfonic acid (19.86 g; 45.5 mmol.) in 200 mL of methanol. The pH of the resulting system upon mixing with water is about 9.4. The mixture in methanol is filtered, the solvent is evaporated and the residue is dried in vacuum to constant weight. Yield of sodium 4-[4-(dicyclohexyl-phosphino)cyclohexyl]benzenesulfonate, Cy2PC6H10C6H4SO3Na, is 20.4 g (98%). 31P{1H} NMR CD3OD, ppm): −1.28. 1H NMR (δ CD3OD, ppm): 1.2-2.2 (m, 31H, cyclohexyl), 2.74 (m, 1H, PhCH), 7.34 and 7.74 (dd, J=8.2 Hz, 4H, aromatic).

Provenance & Evidence