This can be done to benzene using Raney nickel, and lead acetate is used to poison Lindlar's catalyst as it performs this operation gently on alkynes, giving the cis product.
A high-pressure reaction of this type carried out on bituminous coal is the Bergius process. Ruthenium complexed with an enantiomer of BINAP is used for Noyori's asymmetric one. Other organometallic catalysts of this process include Crabtree's and chlorotris(triphenylphosphine) rhodium, which is Wilkinson's catalyst for accomplishing this. This can be done to benzene using Raney nickel, and lead acetate is used to poison Lindlar's catalyst as it performs this operation gently on alkynes, giving the cis product. The subject of many studies on small-molecule activation, for 10 points, name this process, which involves adding the simplest diatomic gas to an unsaturated compound.
A high-pressure reaction of this type carried out on bituminous coal is the Bergius process.
{hydrogenation} [prompt on {reduction}]