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- ItemEfficient Synthesis of Novel Plasticizers by Direct Palladium-Catalyzed Di- or Multi-carbonylations(Weinheim : Wiley-VCH, 2022) Hu, Yuya; Sang, Rui; Vroemans, Robby; Mollaert, Guillaume; Razzaq, Rauf; Neumann, Helfried; Junge, Henrik; Franke, Robert; Jackstell, Ralf; Maes, Bert U. W.; Beller, MatthiasDiesters are of fundamental importance in the chemical industry and are used for many applications, e.g. as plasticizers, surfactants, emulsifiers, and lubricants. Herein, we present a straightforward and efficient method for the selective synthesis of diesters via palladium-catalyzed direct carbonylation of di- or polyols with readily available alkenes. Key-to-success is the use of a specific palladium catalyst with the “built-in-base” ligand L16 providing esterification of all alcohols and a high n/iso ratio. The synthesized diesters were evaluated as potential plasticizers in PVC films by measuring the glass transition temperature (Tg) via differential scanning calorimetry (DSC).