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Table 1 Oxidation of alcohols with H2O2 over SiliaCat Au

From: Sol–gel encapsulation of Au nanoparticles in hybrid silica improves gold oxidation catalysis

Entry Substrate Au (mol%) H2O2 (eq.) Yield Time (h)
1 Cinnamyl alcohol 0.5 3.2 53.6 % (aldehyde only) 3
2 1-phenylethanol 0.5 3.2 94.2 % (ketone only) 3
3 1-phenylethanol 0.5 1.5 69.5 % (ketone only) 3
4 4-methylbenzyl alcohol 1.0 3.2 31 % (aldehyde)
6 % (acid)
3
5 4-methoxybenzylalcohol 1.0 3.2 80 % (aldehyde)
6 % (acid)
3
6 1-nonanol 1.0 3.2 13 % (aldehyde)
4 % (acid)
3
7 Cyclohexanol 1.0 3.2 10 % (ketone) 3
  1. Reaction conditions: 10 mmol substrate, 10 mL H2O, 90 °C, 5 % H2O2 added dropwise during 30 min; the catalyst amount was determined following ICP-MS analysis of the Au load in the catalyst