p-Toluenesulfonic acid → HCID 86734482, compound

Participants

Reaction Steps

39.8 g of 4,4-bis(4'-hydroxy-3'-tert.-butyl-phenyl) pentanoic acid were dissolved in 222 g of n-bitanol and 228 g of toluene and 1 g of p-toluene-sulfonic acid was added as an esterification catalyst. Azeotropic distillation was continued until no more water distilled over. After toluene and butanol had been distilled off, a resin-like residue was obtained. After recrystallization from hexane, the 4,4-bis(4'-hydroxy-3'-tert.-butyl-phenyl)pentanoic acid n-butyl ester was obtained as a white crystallized substance.

Provenance & Evidence