Attention:

Certain features of Sigma-Aldrich.com will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Supported/Encapsulated Palladium Catalysts

By: William Sommer, Aldrich ChemFiles 2007, 7.10, 23.

Aldrich ChemFiles 2007, 7.10, 23.

Palladium has become one of the most commonly used metal for cross-coupling transformations. However, the use of homogeneous palladium presents several drawbacks that can be overcome by attaching the desired palladium complex to a functionalized polystyrene resin. Aldrich offers a portfolio of polystyrene supported palladium complexes that showed good results for Heck, Suzuki, and Sonogashira transformations.

In partnership with Reaxa, Sigma-Aldrich offers a variety of supported catalysts, Pd(II) EnCat™ and LaPCat™. Pd(II) EnCat™ covers a wide range of immobilized palladium acetate catalysts with or without activating ligands contained in a robust, porous polyurea matrix which allows easier, faster, and cleaner reaction processes to be developed. The recyclable catalysts have demonstrated superb activity in cross-couplings, Heck couplings, and carbonylations.1–3

The LaPCat™ kit is an exclusive collection of six palladium and/or copper containing perovskite heterogeneous catalysts for use in a wide range of organic reactions. LaPCat™ catalysts demonstrate superb catalytic activity in many coupling reactions with a wide variety of substrates.

back to top Back to Top

Materials

     

References

  1. Ladlow, M. et al. Org. Biomol. Chem. 2003, 1, 2419.
  2. Ley, S. V. et al. Org. Biomol. Chem. 2004, 2, 611.
  3. Ley, S. V. et al. Chem. Commun. 2005, 2175.

back to top Back to Top

Related Links