Gold complexes, catalysis

Edward Tiekink and gold complexes in liquid crystals by Pablo Espinet. Homogenous catalysis by gold complexes is not included here since a book dedicated especially to this topic edited by Stephen Hashmi will also appear in 2009 from this publishing house. 

Until 1998, only gold(III) was believed to be effective for catalyzing these processes because, as mentioned previously, only the gold(I) compound K[Au (CN)2] was tested and it was inert to catalysis. Fortunately, Teles et al. reported very strong activity in the addition of alcohols to alkynes when they used cationic gold( I) -phosphane complexes [14]. In this study, the aforementioned authors tested for the first time the suitability of nucleophilic carbenes that displayed even greater activity than other gold complexes, but they were unable to synthesize the subsequent cationic derivatives. 

Ferrocenylphosphine-gold complexes, 225 Formaldehyde oligomerization, 332 Formic acid, transfer hydrogenation, 123 Formulas, chiral compounds, xiii-xvii Four-dimensional chemistty. See Asymmetric catalysis... 

Multinuclear (isocyanide)gold complexes, reactivity, 2, 287 Multi-phase organometallic catalysis, in ionic liquids, 1, 856 Multiple-quantum MAS, half-integer spin quadrupolar nuclei central transition NMR studies, 1, 466 Multistate magnetization transfer, in dynamic NMR magnetization, 1, 410 Multistep catalytic cycles... 

While these reactions with the simple alkenes have little practical significance, they epitomise those experienced by more complex molecules, as well as being a source of entertainment for academic scientists, and informative of the basic properties of gold in catalysis. 

Guzman J, Gates BC (2004) A mononuclear gold complex catalyst supported on MgO Spectroscopic characterization during ethylene hydrogenation catalysis. J Catal 226 111... 

Scheme 3.39 Enantioselective relay catalysis by gold complex/chiral phosphoric acid bina system.

Table 11 Enantioselectivity and Diastereoselectivity in the Aldol Reactions of Methyl Isocyanoacetate Under Catalysis by Chiral Ferrocenylphosphine-Gold Complexes (equation 22)...

Catalysis by Chiral Ferrocenylphosphine-Gold Complexes (equation 22)... 

L. Pignolet, in Catalysis by Di- and Polynuclear Metal Cluster Complexes Catalysis by Mixed-Metal Clusters Containing Gold Phosphine Groupings, (Eds, R. D, Adams, F, A, Cotton), Wiley-VCH, New-York, 1998, pp. 95. 

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