Summary Thiosemicarbazones (TSCs) are a class of strong metal ion ligands, which are currently being investigated for several applications, such as anticancer treatment. In addition to these ligands only, which exert their activity upon interaction with metal ions in cells, preformed metal–TSC…
Abstract Plant exudates have been extensively used in the past for different applications related to their olfactory, physical or medical properties. Their identification in archaeological samples relies, notably, on the characterisation of chemotaxonomic molecular markers but is often hampered by…
Non-noble metal catalysis: Molecular approaches and Reactions, Wiley-VCH, edited by Robertus Klein Gebbink and Marc-Etienne Moret, Utrecht University, The Netherlands. The study and development of new homogeneous catalysts based on first-row metals (Mn, Fe, Co, Ni, and Cu) has grown significantly…
Abstract The emergence of N-heterocyclic carbenes as ligands across the Periodic Table had an impact on various aspects of the coordination, organometallic, and catalytic chemistry of the 3d metals, including Cu, Ni, and Co, both from the fundamental viewpoint but also in applications, including…
Abstract We present the synthesis of novel rotaxanes based on mechanically interlocked porphyrins and fullerene and their advanced investigations by means of photophysical measurements. To this end, a fullerene-capped dumbbell-type axle containing a central triazole was threaded through strapped…
Abstract Gross–Oliveira–Kohn density-functional theory (GOK-DFT) for ensembles is the DFT analog of state-averaged wavefunction-based (SA-WF) methods. In GOK-DFT, the SA (so-called ensemble) exchange-correlation (xc) energy is described by a single functional of the density which, for a fixed…
CHAPTER 27 Noncovalent Interactions in Key Metal-centred Catalytic Intermediates: Structure–Electronic Relationship Mustapha Hamdaoui and Jean-Pierre Djukic This chapter covers the most recent advances in investigations of the most critical intermediates in transition metal-promoted processes…
Abstract Two unprecedented domino reactions are described, starting from ketospiro-enesulfonamides. By treatment with ZrCl4 and allylsilane, an intramolecular electrophilic aromatic substitution and subsequent allylation is observed. By treatment with TiCl4 and allylsilane, a double enamine-type…
Abstract Natural, non-natural and ent-14β-hydroxyandrostane derivatives closely related to the cardenolide and bufadienolide skeletons were readily available through highly diastereo-/enantioselective Diels–Alder reactions calling for high pressure or Lewis acid activation. Moreover, in the…
Abstract Functionalization of a methylviologen with four methyl ester substituents significantly facilitates the first two reduction steps. The easily generated radical cation shows markedly improved air stability compared to the parent methylviologen, making this derivative of interest in organic…
Abstract The allosteric control of the receptor properties of two flexible covalent cages is reported. These receptors consist of two zinc(II) porphyrins connected by four linkers of two different sizes, each incorporating two 1,2,3-triazolyl ligands. Silver(I) ions act as effectors, responsible…
Abstract As multidrug resistant pathogenic microorganisms are a serious health menace, it is crucial to continuously develop novel medicines in order to overcome the emerging resistance. The methylerythritol phosphate pathway (MEP) is an ideal target for antimicrobial development as it is absent…
Abstract Copper-induced alkyne-azide cycloaddition (CuAAC), popularly known as the click-reaction, is one of the most widely used synthetic methods in the design of supramolecular scaffoldings. Whether its catalytic or stoichiometric version is concerned, the involvement of two metals in the…
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