Now, Aldrich is introducing a new class of quench reagents: palladium scavengers on silica gel:
3-(Diethylenetriamino)propyl-functionalized silica gel
3-Mercaptopropyl-functionalized silica gel
Does anyone have experience using these or other scavengers for recovering PdCL2 from the wacker oxidation?
Also, on Rhodiums page there is a write up for the improved wacker, using mineral acids as co-catalysts and increasing speed of the reaction by 50 times in some instances. Has anyone tryed this on our favorite olefin yet?
http://www.sigmaaldrich.com/Area_of_Interest/Drug_Discovery/Combinatorial_Chemistry/Palladium_Scavengers.html (http://www.sigmaaldrich.com/Area_of_Interest/Drug_Discovery/Combinatorial_Chemistry/Palladium_Scavengers.html)
https://www.thevespiary.org/rhodium/Rhodium/chemistry/wacker.improvement.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/wacker.improvement.html)