Highly selective generation of vanillin by anodic degradation of lignin: a combined approach of electrochemistry and product isolation by adsorption

The oxidative degradation of lignin into a variety of valuable products has been under investigation since the first half of the last century. Especially, the chance to claim this cheap, abundant and renewable source for the production of the important aroma chemical vanillin (1) was one of the major driving forces of lignin research. So far most of the developed methods fail in technical application since no viable concept for work-up is included. This work represents a combined approach of electrochemical conversion of Kraft lignin and product recovery by adsorption on a strongly basic anion exchange resin. Electrolysis conditions are optimized regarding reaction temperatures below 100 °C…

Effiziente und stereodivergierende elektrochemische Synthese von optisch reinen Menthylaminen

Innentitelbild: Effiziente und stereodivergierende elektrochemische Synthese von optisch reinen Menthylaminen (Angew. Chem. 24/2011)

Efficient and stereodivergent electrochemical synthesis of optically pure menthylamines.

Inside Cover: Efficient and Stereodivergent Electrochemical Synthesis of Optically Pure Menthylamines (Angew. Chem. Int. Ed. 24/2011)

Highly selective electrosynthesis of biphenols on graphite electrodes in fluorinated media.

The direct and selective phenol coupling reaction that provides biphenols still represents a challenge in organic synthesis. The recently developed electrosynthesis on boron-doped diamond anodes with fluorinated additives was developed further to allow the application to less-expensive electrodes and fluorinated media. This advanced protocol allows the highly selective anodic phenol coupling reaction on graphite with a broad scope.