Petroleum Chemistry, Vol.52, No.6, 422-425, 2012
Hydromenthoxycarbonylation of isobutylene in the presence of Tetrakis(triphenylphosphine)palladium-based catalyst systems
The catalytic activity of the Pd(PPh3)(4)-TsOH and Pd(PPh3)(4)-PPh3-TsOH systems in the reaction of isobutylene hydromenthoxycarbonylation with carbon monoxide and l-menthol has been examined. It has been found that the reaction proceeds regioselectively yielding the linear product l-menthyl isovalerate. Optimal conditions have been found for running the process. The spatial structure of l-menthyl isovalerate synthesized via the isobutylene hydromenthoxycarbonylation reaction has been established by H-1 and C-13 NMR techniques. DOI: 10.1134/S0965544112060126