To the best of our knowledge, this last example constitutes the first of this class of substrates to be catalytically hydrofluorinated in an efficient and selective manner.[ 22] To fully exploit this strategy, we applied these reaction conditions to a highly functionalised unsymmetrical alkyne.
A novel highly selective chemosensor S1 for cyanide based on unsymmetrical azine derivative was successfully designed and synthesized, which showed both colorimetric and fluorescence turn-on responses for cyanide ions in aqueous.
In addition, SAXS analysis of the bulk material reveals the formation of different highly ordered structures demonstrating complex hydrogen bonding of these unsymmetrical materials.
This anion species was proved to be of low nucleophilicity and was shown to be a highly useful base particularly for regioselective alkylation of an unsymmetrical cyclic ketone.
Certain ladderphanes, whether symmetrical or unsymmetrical, can readily assemble on HOPG surface to exhibit highly ordered patterns.
Everything made by human hands looks terrible under magnification crude, rough and unsymmetrical.
The Markovnikov rule expresses the regioselectivity to be expected in the addition of unsymmetrical reagents (such as HX) to unsymmetrical alkenes (such as H2C=CHR).
