A recyclable nanoparticle-supported rhodium catalyst for hydrogenation reactions.
Catalytic hydrogenation under mild conditions of olefins, unsaturated aldeydes and ketones, nitriles and nitroarenes was investigated, using a supported rhodium complex obtained by copolymerization of Rh(cod)(aaema) [cod: 1,5-cyclooctadiene, aaema-: deprotonated form of 2-(acetoacetoxy)ethyl methacrylate] with acrylamides. In particular, the hydrogenation reaction of halonitroarenes was carried out under 20 bar hydrogen pressure with ethanol as solvent at room temperature, in order to minimize hydro-dehalogenation. The yields in haloanilines ranged from 85% (bromoaniline) to 98% (chloroaniline).
Dell'Anna
Maria Michela
MM
Dipartimento di Ingegneria delle Acque e di Chimica del Politecnico di Bari, via E.Orabona, 4 I-70125 Bari, Italy. mm.dellanna@poliba.it
Gallo
Vito
V
Mastrorilli
Piero
P
Romanazzi
Giuseppe
G
D000447:Aldehydes / Q000737:chemistry; D000475:Alkenes / Q000737:chemistry; D000814:Aniline Compounds / Q000138:chemical synthesis; D002384:Catalysis; D006865:Hydrogenation; D007659:Ketones / Q000737:chemistry; D053758:Nanoparticles; D009570:Nitriles / Q000737:chemistry; D012238:Rhodium / Q000737:chemistry*
D000447:Aldehydes; D000475:Alkenes; D000814:Aniline Compounds; D007659:Ketones; D009570:Nitriles; D012238:Rhodium; C023650:aniline