For 10 points, name this metal used in the Negishi and Suzuki couplings as well as Lindlar's Catalyst.
Dialkylbiaryl phospine ligands are used as pre-catalysts containing this metal and include the BrettPhos line. An alternative to the Ullmann reaction in synthesizing aryl ethers can use those catalysts, as can a reaction to produce aryl amines. This metal is re-oxidized using copper in a reaction to convert ethylene to acetaldehyde, and it can also be used for allylation of nucleophiles. Both of those reactions are co-named for Jiro Tsuji. Either nickel or this metal can be used to catalyze a reaction between (*) organohalides and organozinc compounds that allows synthesis of non-symmetric biaryl compounds. This metal can be used to catalyze the reaction of aryl halides and an organoboronic acid, and along with lead it can be used to reduce alkynes to alkenes without further reduction. For 10 points, name this metal used in the Negishi and Suzuki couplings as well as Lindlar's Catalyst.
Dialkylbiaryl phospine ligands are used as pre-catalysts containing this metal and include the BrettPhos line.
Palladium