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Titolo:
Synthesis of aromatic carbonates by oxidative carbonylation: Development of efficient palladium complex catalyst systems and their application to one-step polycarbonate synthesis
Autore:
Ishii, H; Takeuchi, K; Asai, M; Ueda, M;
Indirizzi:
Natl Inst Mat & Chem Res, Joint Res Ctr Precis Polymerizat Tsukuba, Japan Chem Innovat Inst, Tsukuba, Ibaraki 3058565, Japan Natl Inst Mat & Chem Res Tsukuba Ibaraki Japan 3058565 aki 3058565, Japan
Titolo Testata:
JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN
fascicolo: 8, volume: 59, anno: 2001,
pagine: 790 - 799
SICI:
0037-9980(200108)59:8<790:SOACBO>2.0.ZU;2-R
Fonte:
ISI
Lingua:
JPN
Soggetto:
SOLID-STATE POLYMERIZATION; PD DINUCLEAR COMPLEX; DIPHENYL CARBONATE; DIMETHYL CARBONATE; BISPHENOL-A; REDOX CATALYST; MELT TRANSESTERIFICATION; SUPERCRITICAL CO2; PHENOL; LIGANDS;
Keywords:
oxidative carbonylation; Pd complex; carbon monoxide; phenol; diphenylcarbonate; bisphenol A; polycarbonate; one-step synthesis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Ishii, H Natl Inst Mat & Chem Res, Joint Res Ctr Precis Polymerizat Tsukuba, Japan Chem Innovat Inst, 1-1-1 Higashi, Tsukuba, Ibaraki 3058565, Japan Natl Inst Mat & Chem Res 1-1-1 Higashi Tsukuba Ibaraki Japan 3058565
Citazione:
H. Ishii et al., "Synthesis of aromatic carbonates by oxidative carbonylation: Development of efficient palladium complex catalyst systems and their application to one-step polycarbonate synthesis", J SYN ORG J, 59(8), 2001, pp. 790-799

Abstract

New catalyst systems for the direct synthesis of diphenyl carbonate (DPC) from carbon monoxide (CO) and phenol were investigated. Palladium-tin complexes [Pd-2(dppm)(2)(SnCl3)CI and Pd2 (dPPM)(2)(SnCl3)(2), dppm: bis (diphenylphospino) methane] with manganese redox catalyst [Mn (TMHD)(3), TMHD: 2,2,6,6-tetramethyl-3,5-heptanedionate] were found to produce DPC effectively without any addition of ammonium halide. Furthermore, palladium catalyst systems such as, palladium dinuclear complexes, palladium-diimine complexes, and palladium-6,6 ' -disubstituted-2,2 ' -bipyridyl complexes promoted the oxidative carbonylation of phenol more effectively in the presence of ammonium halide. Especially, the efficiencies of Pd-2(Ph2PPy)(2)(NO2)(2) (Ph2PPy: 2-pyridyldiphenylphosphine) and Pd(6,6 ' -Me(2)bpy)Cl-2 (6,6 ' -Me(2)bpy:6,6 ' -dimethyl-2,2 ' -bipyridyl) were highest among these palladium complexes. These palladium catalyst systems were applied for the direct synthesis of polycarbonate (PC) from bisphenol A and CO. PC with the number- and weight-average molecular weights of 5600 and 12900 respectively, was successfully obtained using Pd(6,6 ' -Me(2)bpy)Cl-2 catalyst system. These molecular weights were highest among the direct syntheses of PC by oxidative carbonylation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/07/20 alle ore 15:45:34