Polymeric reagents. 3. Poly[vinyl(pyridinium chlorochromate)]: a new recyclable oxidizing agent

Solid State Oxidation of Alcohols Using 1-Butyl-4-aza-1-azoniabicyclo[2.2.2]octane Chlorochromate

“…[12][13][14][15] Very recently, we have introduced new reagents for oxidation of alcohols under solvent-free or non-aqueous conditions. 10,11 In recent years, there has been an increasing interest in reactions that proceed in the absence of solvents due to their reduced pollution, low costs and simplicity in process and handling.…”

“…In order to show the oxidative ability of this reagent (BAAOC), we compared some of our results with those reported for pyridinum chlorochromate (PCC), 12 pol[vinyl-(pyridinum chlorochromate)] (PVPCC), 13 4-(dimethylamino)-pyridinum chlorochromate (DMAPCC), 14 and 2,2'-bipyridinum chlorochromate (BPCC) 15 (Table 2). This reagent is superior to pyridinum chlorochromate (PCC), 10 poly[vinyl-(pyridinum chlorochromate)] (PVPCC), 13 4-(dimethylamino)-pyridinum chlorochromate (DMAPCC), 14 and 2,2'-bipyridinum chlorochromate (BPCC) 15 in term of selectivity, high yields, cost, purity of products and easy of work-up.…”

“…This reagent is superior to pyridinum chlorochromate (PCC), 10 poly[vinyl-(pyridinum chlorochromate)] (PVPCC), 13 4-(dimethylamino)-pyridinum chlorochromate (DMAPCC), 14 and 2,2'-bipyridinum chlorochromate (BPCC) 15 in term of selectivity, high yields, cost, purity of products and easy of work-up.…”

Quaternization reaction of 2-vinylpyridine and 4-vinylpyridine network copolymers for 4-nitrophenol adsorption

“…6,[10][11][12] These copolymers have the advantage of complexing different oxidizing agents by immobilizing them. [13][14][15] The 2VP or 4VP-DVB copolymer beads are synthesized by suspension polymerization technique and the porosity in the beads is controlled by mixing some inert organic liquid named diluent with monomers. [12][13][14][15][16][17][18] Two of the most desirable properties of any ion-exchanger are: high ionexchange capacity and fast ion-exchange kinetics.…”

“…[13][14][15] The 2VP or 4VP-DVB copolymer beads are synthesized by suspension polymerization technique and the porosity in the beads is controlled by mixing some inert organic liquid named diluent with monomers. [12][13][14][15][16][17][18] Two of the most desirable properties of any ion-exchanger are: high ionexchange capacity and fast ion-exchange kinetics. These characteristics could be obtained in the network materials by the functional groups present in the chemical structure and by their porosity.…”