Cu(II)-amino acid–CaAl-layered double hydroxide complexes, recyclable, efficient catalysts in various oxidative transformations

Base-Free Selective Oxidation of Glycerol over LDH Hosted Transition Metal Complexes Using 3% H2O2 as Oxidant

“…Thus, it was of significance to design highly effective catalysts, especially a low-cost heterogeneous catalyst, for the oxidation reaction of GLY. LDHs were often considered as catalysts or catalyst supports owing to their adjustable surface basicity, high surface and thermal stability, along with the adjustable variability of their laminate cations, and the exchangeability of their interlayer anions [21][22][23][24]. In our previous report, we prepared an LDH-hosted chromium complex, which was an active catalyst for the oxidation reaction of GLY to DHA with 3% H2O2 [17].…”

Syntheses, characterization and catalytic activities of CaAl-layered double hydroxide intercalated Fe(III)-amino acid complexes

“…For constructing the Fe(III)-amino acid anions among the layers, two methods were used adopted from those applied for the syntheses of Mn(II)-amino acid anion−CaAl-LDH and Cu(II)-amino acid−CaAl-LDH composites [27,28]. In brief, the preparation method consisted of the following steps.…”

Catalytic use of layered materials for fine chemical syntheses

“…In both reactions, the oxidant was iodosylbenzene [PhIIJOH) 2 ] in situ formed from (diacetoxy)iodobenzene (Scheme 13). 67 Recently, composites have been prepared where CaAl-LDH was the host and the anionic forms of MnIJII)-, 68 CuIJII)-, 69 Fe (III)- 70 and NiIJII)-amino acid (L-histidine, L-tyrosine, L-cysteine) 71 were the guests. The composites were tested in the oxidation reactions of cyclohexene and two oxidants (peracetic acid and PhIIJOH) 2 ) (Scheme 14).…”

“…The CuIJII)-, 69 the FeIJIII)- 70 and MnIJII)-containing 72 composites were probed in the Ullmann-type etherification (Scheme 15), 73 and they were found to be efficient catalysts in these transformations, too. The composites also displayed very good recycling abilities.…”