Asymmetric hydrogenation of an α-unsaturated carboxylic acid catalyzed by intact chiral transition metal carbonyl clusters – diastereomeric control of enantioselectivity

Abstract

<p>Asymmetric hydrogenation catalysis by [(μ-H)₂Ru₃(μ₃-S)(CO)₇(μ-P–P*)] (P–P* = chiral diphosphine) indicates intact chiral clusters as active catalysts.</p>

Synthesis, molecular structure and fluxional behavior of the elusive [HRu4(CO)12]3−carbonyl anion

“…Somehow this is correlated with the involvement of Ru-H complexes, molecular carbonyl clusters and nanoparticles in catalytic processes using hydrogen. [28][29][30][31][32][33][34][35][36][37][38]…”

“…28 Phosphine derivatives of H 4 Ru 4 (CO) 12 as well as other Ru-H-CO clusters are active in homogeneous catalysis. [29][30][31][32] For instance, H 4 Ru 4 (CO) 12-2x (P-P) x (x = 1 and 2; P-P = chiral diphosphine) species catalyze several asymmetric isomerization, hydroformylation and hydrogenation reactions. [33][34][35][36] Molecular Ru hydride carbonyl clusters may serve also as models in order to help the location of the hydride ligands within Ru nanoparticles employed for hydrogenation.…”

Mercurophilic interactions in heterometallic Ru-Hg carbonyl clusters

“…Among the different classes of inorganic and organometallic compounds displaying metallophilicity, some interesting examples have been also reported for heterometallic carbonyl clusters [20][21][22][23][24][25][26][27][28]. In addition, heterometallic clusters can be employed for the activation of small organic molecules [29][30][31][32][33][34][35][36][37][38], for applications in homeogeneous catalysis and as precursors of metal nanoparticles and heterogeneous nanostructured catalysts [39][40][41][42][43][44][45][46][47][48][49][50][51][52].…”