Hmc. Ferraz et al., Reaction of beta,gamma-unsaturated carboxylic acids with thallium triacetate (TTA): Lactonization vs oxidative decarboxylation, SYN COMMUN, 29(11), 1999, pp. 1953-1964
The reaction of six beta,gamma-unsaturated carboxylic acids with thallium t
riacetate (TTA) was studied. The nature of the products is highly sensitive
to the substitution pattern of the substrates. Aliphatic acids gave mainly
lactones, while those bearing an aromatic ring furnished only decarboxylat
ion products.