“…This finding supported mechanisms that propose the active participation of gold(I) hydrides in the dehydrogenative silylation of alcohols [10,11] [the hydrolysis of IPrAuH [8] (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) would nicely fit into that picture], the formation of hexabutyldistannane by intermolecular dehydrogenative dimerization, [12] the hydrosilylation of ketones and imines, [11,13] the hydroboration of imines, [14] C À H activation, [15] and the enantioselective hydrogenation of alkenes and imines. [16] And it also could explain reactions for which the intermediacy of gold hydrides could be assumed, like the first reported homogeneous gold-catalyzed hydrogenation [17] and the goldcatalyzed synthesis of pyridines, in which the final step is the dehydrogenation of the initially formed dihydropyridine intermediate. [18] Corma et al have suggested gold(III) monohydrides as intermediates in homogeneous gold-catalyzed hydrogenation reactions, a pathway supported by DFT calculations.…”