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Natural products often serve as sources of new drugs, either directly or after synthetic modification, but site-selective functionalization of complex small molecules is challenging. Now, a method has been developed that enables selective modification of a wide range of natural products by engaging a benzyne intermediate in a variety of reaction modes.
Helium, the 'most noble' of the noble gases, had only been coaxed into forming molecular ions or van der Waals compounds. It has now been seen in a stable solid compound, Na2He, under high pressure.
Gluing materials together underwater is a mighty challenge faced — and overcome — by mussels. It requires good adhesion and cohesion. Molecular-level mechanical measurements have now shown that cation–π interactions provide surprisingly strong cohesive abilities.
Life has evolved elaborate means of communicating essential chemical information across cell membranes. Inspired by biology, two new artificial mechanisms have now been developed that use synthetic messenger molecules to relay chemical signals into or across lipid membranes.
Using chiral modifiers on the surfaces of heterogeneous catalysts is a potentially fruitful route to practical stereoselective chemistry. Now, a study of the dynamics of prochiral adsorbates on modified surfaces has shown that they can rapidly interconvert between adsorption states of different prochirality.
A unique transformation for the site-selective cleavage of one C–C single bond and two C–H bonds in sequence has now been developed. This enables a simple carbon skeleton to be reorganized into a significantly more complex form with remarkable efficiency.
Biomimetic molecules that can be easily tailored offer numerous opportunities. Now, boron-based clusters have been shown to be excellent biomimetics. The ease with which the cluster surfaces can be modified stands to change how chemists might go about preparing materials for imaging, drug delivery and other applications.
Free radicals are notorious for unselective coupling reactions; however, the coupling of free radicals generated from acyl tellurides has now been shown to form C–C bonds with remarkable fidelity, which enables easy one-step assembly of densely oxygenated natural product motifs.
The process of electronic energy transfer between molecules has long fascinated chemists. Femtosecond spectroscopy measurements of a series of molecular dimers now reveal signals that arise from non-Born–Oppenheimer coupling, suggesting a new mechanism to enhance energy transfer.
Planar molecules may break mirror symmetry when aligned on a surface, but both right- and left-handed forms will be created. Starting with a single-handed precursor, chiral adsorbates of planar hydrocarbons with a single handedness are formed in on-surface reactions.
Strong interactions between oxide supports and catalytic metal particles can lead to inhibitive oxide layers forming over the active metal catalyst. Now, adsorbate-induced metal–support interactions have been shown to lead to a porous overlayer in the Rh/TiO2 system that tunes catalyst activity, improving its selectivity for the partial reduction of CO2.
Attempts to build lifelike synthetic protocells must consider extracellular influences in order to accurately reflect the behaviours and characteristics of real ecosystems. Now, this concept has been demonstrated by the synthesis of a community of protocells in which one cell type preys upon another.
