The field of catalysis is a wide and diverse field that attempts to emulate the exquisite function of Nature′s catalysts, enzymes. One attractive feature of catalysis is that the catalytic species is not consumed during the chemical transformation. While conceptually catalysis has a uniform meaning, there can be metal catalysis, photocatalysis, organocatalysis. Catalysis by metals can be further subdivided into heterogeneous metal catalysis or homogeneous metal catalysis. Photocatalysis chemistry has been gaining in popularity in recent years while non-metal catalysis, organocatalysis, has been undergoing a renaissance in the catalysis chemistry area. Within the field of transition metals chemistry, there are several classes of transformations that have become a mainstay in the toolkit of the synthetic and increasing non-synthetic chemist alike. While only several of which are mentioned, these methods have taken on the names of the laboratories from which they have been developed and include but are not limited to: Stille, Buchwald-Hartwig, Negishi, Heck, Miyaura-Suzuki, and Sonogashira.
Regardless of the application, there is an extensive selection of catalysts available in the Sigma-Aldrich product portfolio.