Amino functionalized bipyridine–heteropolyacid ionic hybrid: A recyclable catalyst for solvent-free oxidation of benzyl alcohol with H2O2

Direct catalytic synthesis of ε-caprolactam from cyclohexanol using [n-C16H33N (CH3)3]H2PW12O40 as a catalyst

“…1, CTAPMo, CTAHPMo, CTAH 2 PMo) as a catalyst. Actually, the different catalytic activities resulted from different heteropoly anions with a similar organic modifier have been also observed in the oxidation of benzyl alcohol with aqueous H 2 O 2 previously [26]. In order to determine the role of long-chain alkylammonium cations in the oxidation of cyclohexanol, same mol of H 3 PW 12 O 40 was used as a catalyst under the same reaction condition (Fig.…”

“…Small particle size facilitates the permeation of the organic intermediates into the bulk of the hybrid. This proposal consists with the wellestablished view point of "pseudo-liquid behavior" for the bulk-type catalysis of a HPA catalyst [26,30]. The fresh catalyst and recovered catalysts in oxidation stage and Beckmann rearrangement stage were characterized by 31 P NMR (Fig.…”

Visible‐Light‐Mediated Addition of α‐Aminoalkyl Radicals to [60]Fullerene by Using Photoredox Catalysts

“…Basic TSILs, functionalized with tertiary amines, can be synthesized following the strategy illustrated in Scheme . Clearly, the neutralization reaction can be performed even after isolation of the initially formed protonated salt 15…”

Heteropoly Tungstate Supported on Metal Oxide Catalysts for Liquid Phase Oxidation of Benzyl Alcohol with Hydrogen Peroxide

“…Among them, heteropolyacids (HPAs) with Keggin-type structure, which possess unique features such as low volatility, noncorrosive, non-toxic, strong Brønsted acidic strength, and excellent redox properties, have been extensively studied and utilized as solid acid catalyst for heterogeneous reactions. [11][12][13][14] Nonetheless, owing to their high solubility in polar solvents, HPA-based catalyst systems are drawback by their difficulty in catalyst separation and recycling. As such, modified HPA catalysts, particularly those that may be easily prepared using a feasible support, open up a wide new possibilities to unravel the aforementioned problems.…”