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| This technology provides a simple method for regenerating (homogeneous) palladium catalyst. In many palladium catalyzed formation reactions, the catalyst precipitates at the end of the reaction. Usually, the precipitated palladium cannot be used in this form as catalyst for the next reaction. In the past extra regeneration activities were necessary with disadvantages related to logistics, costs, storage, handling and loss of palladium for different involved parties. It is clear that a simple regeneration process that would allow the reuse of the palladium compound leads to various benefits and cost savings connected to the use of palladium catalyst.innovative palladium catalyst recycle DSM Pharmaceutical Products business simple regenerating (homogeneous) Typical reactions Heck Wacker Suzuki Kumada Negishi Sonogashira Hartwig-Buchwald amination performed batch wise continuous scale integration end markets Fine Chemicals Performance Materials Benefits mild conditions in-house recycling reduction handling costs certain steps transportation incineration and/or disposal eliminated environmentally friendly main vessel thereby times containment Pd catalyzed formation precipitates mostly true ligand-free cases occur ligands present precipitated easily removed filtration carrier material celite silica decalite deposit preferentially added next past extra regeneration activities necessary related logistics storage loss parties clear reuse compound leads various benefits savings connected effected adding small amount (1-3 eq respect palladium) iodine bromine (Figure 1) applied prior loop reoxidation completely restores activity catalysts repeated least reactivity indicating potential rounds Background Literature |
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Interested? This is an abstract of a technology that is available for sale or license. yet2.com can introduce you confidentially to the owner of this technology.
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