For 10 points, name this class of reactions which adds a light diatomic molecule across a double bond.
When this type of reaction is applied to coal liquefaction, tetralin is commonly used as the donor solvent - that is the transfer type of this reaction. A rhodium atom complexed to a cyclo-hexa-diene ring and two tri-phenyl-phosphine (try-FEN-ill-FOS-feen) groups acts as a high-turnover catalyst in this type of reaction. A di-phosphine chelating agent bearing anisyl, phenyl, and ethylene substituents acts as a ligand in the first industrial scale example of the asymmetric version of this reaction. A rhodium containing catalyst named for (*) Crabtree has a higher turnover rate than a similar catalyst named for Wilkinson when performing this reaction. DIBAL-H and LAH are commonly used for performing this type of reaction on carbonyls, and a solution of sodium in liquid ammonia reacts in this way with alkynes to give trans-substituted products. For 10 points, name this class of reactions which adds a light diatomic molecule across a double bond.
When this type of reaction is applied to coal liquefaction, tetralin is commonly used as the donor solvent - that is the transfer type of this reaction.
hydrogenation [prompt on "reduction"]