Ji‐Dong Lou

Selective Oxidation of α‐Hydroxy Ketones to α‐Diketones with Chromium Trioxide Supported on Kieselghur Reagent

Selective oxidation of α‐hydroxy ketones to the corresponding α‐diketones with chromium trioxide supported on kieselghur reagent under heterogeneous conditions and reflux is described, and this procedure is an extension of application for this supported reagent as well. The present oxidations are completed within 30 minutes with the yield between 83–93%. The main advantage of this oxidation is that the reaction time is much shorter as compared to the other reported chromium (VI)‐based reagents.

Ferric(III) Nitrate Supported on Kieselguhr: A New Reagent for Selective Oxidation of Alcohols

Abstract A selective and effective oxidation of alcohols into the corresponding aldehydes and ketones, respectively, with a new reagent, ferric(III) nitrate supported on kieselguhr, under heterogeneous conditions is reported.

A New Efficient Oxidation of Alcohols with Jones Reagent Supported on Kieselguhr

A new and efficient method for the preparation of benzaldehydes and ketones by the way of oxidation of corresponding benzyl and secondary alcohols, respectively, using Jones reagent supported on kieselguhr at room temperature under heterogeneous condition is reported.

Manganese Dioxide Supported on Aluminum Silicate: A New Reagent for Oxidation of Alcohols Under Heterogeneous Conditions

Abstract Manganese dioxide supported on aluminum silicate, under heterogeneous conditions at reflux, selectively oxidized aromatic primary and secondary alcohols into the corresponding aldehydes and ketones, respectively, in yields of 87–96%. The present method failed to oxidize aliphatic alcohols. GRAPHICAL ABSTRACT

New Reagent, Manganese Dioxide Supported on Kieselguhr, for Effective Oxidation of Benzoins

Abstract A new reagent, manganese dioxide supported on kieselguhr, for effective oxidation of benzoins into corresponding benzils under heterogeneous and reflux conditions is described. The present oxidations are completed within 10 h with yields of 86–95%. The main advantages of the present procedure are that the preparation of supported reagent is more convenient and the reaction times are relatively short.

A New Reagent, Ferric (III) Nitrate Supported on Graphite, for Selective Oxidation of Alcohols under Heterogeneous Conditions

The selective and effective oxidation of alcohols into the corresponding aldehydes and ketones under heterogeneous conditions by way of a new reagent, ferric (III) nitrate supported on graphite, is described.

Oxidation of Benzoins to Benzils with Chromium Trioxide Supported on Kieselghur under Viscous Conditions

Selective oxidation of benzoins to corresponding benzils using chromium trioxide supported on kieselghur reagent under viscous conditions at room temperature is described. The present oxidations are completed within 1 hour with the yield between 89 and 98%. The main advantage of present oxidation is that the reaction can be carried out under quite milder reaction conditions as compared to the other reported chromium (VI)-based reagents.

Oxidation of Benzoins with Chromium Trioxide in Dimethyl Sulfoxide

An efficient procedure for oxidation of benzoins to corresponding benzils using chromium trioxide as an oxidant in dimethyl sulfoxide at room temperature is described. The present oxidations are completed within 3 hours with the yields between 87 and 96%. The main advantage of this oxidation is that the reaction is carried out under homogeneous system with very mild conditions.

Selective Oxidation of Benzoins to Benzils with Ferric (III) Nitrate Supported on Graphite Reagent

Selective oxidation of benzoins into corresponding benzils using ferric (III) nitrate nonahydrate supported on graphite reagent under heterogeneous conditions and reflux is described. The present oxidations are completed within 3 hours with the yield between 82–95%. It has the main advantage of being readily available, inexpensive, and relatively non‐toxic oxidation reagent.

Solvent‐Free Oxidation of Secondary Alcohols with Chromium Trioxide

Efficient oxidation of secondary alcohols into the corresponding ketones with chromium trioxide at room temperature under solvent‐free condition is described. This oxidation is generally applicable to a range of secondary alcohols especially including some quite sensitive functionalized alcohols, and gives the corresponding ketones in 85–97% yields.