Dimaval as an efficient ligand for binding Ru(III) on cross-linked chitosan aerogel: synthesis, characterisation and catalytic investigation

Ru(III)/dimaval was deposited on chitosan aerogel through the ionic interactions of the proton exchange between the dimaval sulfonic acid and chitosan aerogel amine group. After characterization, the composite was used in the oxidation reaction of certain alkylarenes, aliphatic and benzylic alcohols as well as cyclohexanol. High conversions and excellent selectivities were obtained for the solvent-free reactions using a low catalyst amount under aerobic conditions at 80 degrees C for 2-5 h. The organometallic compound is applicable as a heterogeneous catalyst having high chemical stability and recyclability up to eight times. [GRAPHICS] .