Lindlar Catalyst - Catalysts / Alfa Chemistry

Storage

In
particular, palladium on carbon should always be handled under an inert atmosphere
(preferably argon), and reaction vessels should be flushed with inert gas before the
catalyst is added. Dry catalyst should never be added to an organic solvent in the
presence of air. Palladium on carbon recovered from catalytic hydrogenation
reactions by filtration requires careful handling because it is usually saturated with
hydrogen and will ignite spontaneously on exposure to air. The filter cake should
never be allowed to dry, and the moist material should be added to a large quantity
of water and disposed of properly.Store at RT.

Application

The Lindlar Catalyst is a specialized palladium catalyst designed to facilitate the selective hydrogenation of alkynes to cis-alkenes without further reduction to alkanes. This is achieved by using palladium on calcium carbonate, which is then poisoned with lead acetate and quinoline. This modification prevents the catalyst from fully saturating the alkynes, instead halting the hydrogenation process at the desired alkene stage. The purpose of the Lindlar Catalyst is to provide chemists with a precise tool for controlling the stereochemistry of hydrogenation reactions, which is particularly useful in organic synthesis where specific molecular configurations are necessary. Its effectiveness is largely due to palladium's unique properties, such as its high hydrogen absorption capacity and ability to form stable complexes, making it an ideal choice for targeted chemical transformations.

December 15, 2024

Highly Efficient Catalyst for Hydrogenation in Research

After using Alfa Chemistry's Lindlar Catalyst for selective hydrogenation, I am impressed with its efficiency. It's ideal for my research, offering consistent results. Easy application makes it indispensable in organic synthesis labs.