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The three-component reaction of aryl boronic acids with 1,2,4,5-tetrahydroxybenzene and 1,2-bis(4-pyridyl)ethylene or 4,4-bipyridine leads to the formation of dark-purple boronate ester polymers. Crystallographic analyses show that the polymer strands have ...
We report a simple chemical-route to BN multiwall nanotubes decorated with nanosheets. These nanostructures have been prepared on a large scale from a simple unique chemical process under an ammonia flow onto the surface of an alumina substrate, using carb ...
This work describes the synthesis and characterization of boronic acid-based supramolecular structures. Macrocycles, dendritic structures, polymers, rotaxanes, and cages were assembled using four types of reversible reactions. The key point of the strategy ...
The nickel pincer complex 1 catalyzes the cross-coupling of the title compounds with remarkable substrate scope and functional group tolerance. A nickel/alkynyl species was isolated and shown to be catalytically competent. THF=tetrahydrofuran, O-TMEDA=bis[ ...
A clear description of the paths of thermal decomposition of complex borohydrides represents a crucial step forward to their utilisation as a reservoir of hydrogen and hence as materials for solid state hydrogen storage. We present in this work a theoretic ...
The title reaction is realized by using an isolated NiII complex (1). The catalysis tolerates a wide range of important functional groups that are often incompatible with Grignard reagents in cross-coupling reactions. ...
An alc. instead of an aldehyde was found to be an effective reaction partner in the three-component Passerini reaction (P-3CR) in the presence of o-iodoxybenzoic acid (IBX). Thus, by simply heating a soln. of an alc. R1CH2OH [R1 = n-Pr, Ph, PhCH2, AcO(CH2) ...
The present invention concerns an intermediate of the following formula (I) in which R1 and R2 represent independently of each other a C1-C12 alkyl group, a (C1-C12 alkoxy)carbonyl group, optionally substituted by one, two or three halogen atom, a (C2-C12 ...
Triethyl[(2-trifluoromethyl)phenyl]silane reacts with the superbasic LIC-KOR mixt. of butyllithium and potassium tert-butoxide exclusively at the 4-position ("meta-metalation") and not at all at the 3-position ("ortho-metalation"). Two further substrates w ...
Boronic acids are versatile building blocks for the construction of complex molecular architectures. Using reversible condensation reactions, it is possible to obtain macrocycles, cages, dendritic structures, and rotaxanes, as well as 1-, 2-, and 3-dimensi ...
