The catalytic CO/styrene and ethylene/methyl acrylate copolymerizations are compared for the first time by applying the same precatalysts. With this aim, PdII neutral, [Pd(CH3)Cl(N–N)], and monocationic, [Pd(CH3)(L)(N–N)][PF6] (L=CH3CN, DMSO), complexes with 1-naphthyl- and 2-naphthyl-substitued α-diimines with both an acenaphthene and a diazabutadiene skeleton as chelating nitrogen-donor ligands (N–N) have been studied. In the case of the complexes with the 1-naphthyl-substituted ligands, syn and anti isomers are found both in solid state and in solution. All the monocationic complexes generate active catalysts for the CO/styrene copolymerization leading to atactic or isotactic/atactic stereoblock copolymers depending on the ligand bonded to palladium. Instead, in the case of the ethylene/methyl acrylate copolymerization only the complexes with the 1-naphthyl-substituted ligands generate catalysts for this reaction.

Analogies and Differences in Palladium-Catalyzed CO/Styrene and Ethylene/Methyl Acrylate Copolymerization Reactions / Rosar, Vera; Meduri, Angelo; Montini, Tiziano; Fini, Francesco; Carfagna, Carla; Fornasiero, Paolo; Balducci, Gabriele; Zangrado, Ennio; Milani, Barbara. - In: CHEMCATCHEM. - ISSN 1867-3899. - 6:8(2014), pp. 2403-2418. [10.1002/cctc.201402192]

Analogies and Differences in Palladium-Catalyzed CO/Styrene and Ethylene/Methyl Acrylate Copolymerization Reactions

FINI, Francesco;
2014

Abstract

The catalytic CO/styrene and ethylene/methyl acrylate copolymerizations are compared for the first time by applying the same precatalysts. With this aim, PdII neutral, [Pd(CH3)Cl(N–N)], and monocationic, [Pd(CH3)(L)(N–N)][PF6] (L=CH3CN, DMSO), complexes with 1-naphthyl- and 2-naphthyl-substitued α-diimines with both an acenaphthene and a diazabutadiene skeleton as chelating nitrogen-donor ligands (N–N) have been studied. In the case of the complexes with the 1-naphthyl-substituted ligands, syn and anti isomers are found both in solid state and in solution. All the monocationic complexes generate active catalysts for the CO/styrene copolymerization leading to atactic or isotactic/atactic stereoblock copolymers depending on the ligand bonded to palladium. Instead, in the case of the ethylene/methyl acrylate copolymerization only the complexes with the 1-naphthyl-substituted ligands generate catalysts for this reaction.
10-lug-2014
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8
2403
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Analogies and Differences in Palladium-Catalyzed CO/Styrene and Ethylene/Methyl Acrylate Copolymerization Reactions / Rosar, Vera; Meduri, Angelo; Montini, Tiziano; Fini, Francesco; Carfagna, Carla; Fornasiero, Paolo; Balducci, Gabriele; Zangrado, Ennio; Milani, Barbara. - In: CHEMCATCHEM. - ISSN 1867-3899. - 6:8(2014), pp. 2403-2418. [10.1002/cctc.201402192]
Rosar, Vera; Meduri, Angelo; Montini, Tiziano; Fini, Francesco; Carfagna, Carla; Fornasiero, Paolo; Balducci, Gabriele; Zangrado, Ennio; Milani, Barbara
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1122095
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