Another one is Crabtree's catalyst, a homogeneous catalyst for hydrogenation reactions.

Steric effects are the most important consideration in many cases, however electronic effects dominate in hydrogenation reactions where one adsorbate (hydrogen) is relatively small.

Nickel and its alloys are frequently used as catalysts for hydrogenation reactions.

Crabtree is noted for his work in iridium-catalyzed hydrogenation reactions, and particularly for his work on the so-called Crabtree's catalyst.

The final, commercial route to Tipranavir does not feature a chiral auxiliary; instead, this stereocenter is set by an asymmetric hydrogenation reaction.

It can be used as a catalyst for hydrogenation reactions.

One noteworthy derivative is Crabtree's catalyst, a homogeneous catalyst for hydrogenation reactions.

Amino acids have been investigated as precursors chiral catalysts, e.g., for asymmetric hydrogenation reactions, although no commercial applications exist.

An illustrative example of a hydrogenation reaction is the addition of hydrogen to maleic acid to form succinic acid.

However, the reaction rate for most hydrogenation reactions is negligible without extremely high temperatures or pressures.