A Tetraorganyl-Alumaborane with An Al-B σ-Bond and Two Adjacent Lewis-Acidic Centers.

A tetraorganyl-alumaborane () that contains an Al-B bond and twisted Al and B planes was synthesized and structurally characterized. UV-vis absorption spectroscopy, electrochemical measurement, and DFT calculations were employed to reveal the electronic properties of . The reactivity of toward DMSO and CO was studied to demonstrate its deoxygenating abilities.

A meta-Selective C-H Alumination of Mono-Substituted Benzene by Using An Alkyl-Substituted Al Anion through Hydride-Eliminating S Ar Reaction.

Reaction of an Al-centered anion with toluene proceeded to form C-H cleaved product with a perfect meta-selectivity and a relatively small kinetic isotope effect (KIE, k /k =1.51). DFT calculations suggested a two-step reaction mechanism and electronically controlled meta-selectivity arising from the electron-donating methyl group.

An alkyl-substituted aluminium anion with strong basicity and nucleophilicity.

Aluminium anions with an unoccupied orbital are generally considered as highly difficult synthetic targets, as aluminium is the most electropositive element in the p block. Stabilizing effects from two nitrogen substituents and/or the coordination of a Lewis base were recently used to synthesize the first examples of anionic nucleophilic aluminium species. Here we show the synthesis and properties of a potassium salt of a non-stabilized dialkylaluminium anion that exhibits very strong basicity, which reflects the electropositive character of aluminium.