Synthesis of a Strained Spherical Carbon Nanocage by Regioselective Alkyne Cyclotrimerization

A general approach to chemo- and regioselective cyclotrimerization reactions.

Synthesis and electrochemical properties of fullerene-rich nanoclusters synthesized by cobalt-catalyzed cyclotrimerization of bis(aryl)alkyne fullerodendrimers.

Buckling Analysis of Spherical Composite Panels Reinforced by Carbon Nanotube

In this study, the buckling behavior of moderately thick Carbon Nano-Tube (CNT)-reinforced spherical composite panels subjected to both uniaxial and biaxial loads is examined. The uniform and various kinds of functionally graded distributions of the CNT are considered. The mechanical properties of the nanocomposite panels are estimated using the modified rule of mixture. Based on the first-orde...

Regioselective functionalisation of dibenzothiophenes through gold-catalysed intermolecular alkyne oxyarylation.

A protocol has been developed for direct Csp(3)-Csp(2) bond formation at the 4- and 6-positions of dibenzothiophenes using a gold(I) catalyst with terminal alkynes and dibenzothiophene-S-oxides. The sulfoxide acts as a traceless directing group to avoid the need to prefunctionalise at carbon. The iterative use of this protocol is possible and has been employed in the preparation of novel macroc...

Highly Regioselective Synthesis of Substituted Isoindolinones via Ruthenium-Catalyzed Alkyne Cyclotrimerizations

(Cyclooctadiene)(pentamethylcyclopentadiene)ruthenium chloride [Cp*RuCl(cod)] has been used to catalyze the regioselective cyclization of amide-tethered diynes with monosubstituted alkynes to give polysubstituted isoindolinones. Notably, the presence of a trimethylsilyl group on the diyne generally led to complete control over the regioselectivity of the alkyne cyclotrimerization. The cyclizati...