Catalyst-Free Selective Oxidation of Diverse Olefins to Carbonyls in High Yield Enabled by Light under Mild Conditions

Abstract

The selective oxidation of olefins, in particular, aromatic olefins to carbonyls, is of significance in organic synthesis. In general, stoichiometric toxic oxidants or a highcost catalyst is required. Herein we report a novel and practical light-enabled protocol for the synthesis of carbonlys in high yield through a catalyst-free oxidation of olefins using H 2 O 2 as a clean oxidant. A broad scope of carbonyls can be synthesized in high yield, and no catalyst or toxic oxidant is required.

V2O5@TiO2 Catalyzed Green and Selective Oxidation of Alcohols, Alkylbenzenes and Styrenes to Carbonyls

“…Successively, the generated intermediate is attached by the peroxy oxygen and formed di‐hydroxyl intermediate XV . In the end, the aldehyde XVI was formed by the decomposition of di‐hydroxyl intermediate XV (Figure 2, C ) [39] . Based on previously reported studies and obtained results, we hypothesized the plausible mechanistic pathway for the selective oxygenation reactions (Figure 2, A – C ).…”

Syntheses and Structures of trans‐bis(Alkenylacetylide) Ruthenium Complexes

“…Oxidation of organic alkenes resulting in C=C bond cleavage and formation of a carbonyl moiety using O 2 as an oxidant is generally achieved either photo‐ [30] or thermo‐catalytically [31] . Alkene oxidation under catalyst free conditions is currently of interest in organic chemistry, [32] with the formation of 3 c an unanticipated example of such a process.…”

Photo‐Induced Cleavage of Alkenes to Carbonyls in Water

“…Polycyclic aromatic hydrocarbon α ‐Methyl naphthalene ethylene ( 24 ) was also oxidated to the corresponding ketones in mild yield. In 2019, Zhao's team used H 2 O 2 as an oxidant to oxidize olefins to aldehydes or ketones under photocatalytic conditions [17] . Liu′s team in 2021 reported an oxidation cracking reaction of aromatic olefins at high temperatures [16] .…”