Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 1H-Pyrazole-5-carbaldehyde, is researched, Molecular C4H4N2O, CAS is 948552-36-1, about Highly active binuclear Cu (II) catalyst bearing an unsymmetrical bipyridine-pyrazole-amine ligand for the azide-alkyne cycloaddition reaction.Related Products of 948552-36-1.
Ligands containing NH groups often show special characteristics. In this paper, a well-defined dinuclear Cu (II) complex bearing an unsym. bipyridine-pyrazole-amine ligand was synthesized by the condensation of N-H to release H2O. Using sodium L-ascorbate as a reductant, the binuclear complex showed excellent activity in 1,3-dipolar cycloaddition reactions between alkynes and azides to obtain 1,4-disubstituted triazoles in 95%-99% isolated yields.
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