The Mechanism of Diene Polymerisation by Organolanthanide Catalysts Deduced from Microwave Experiments

Autor:	Philippe Zinck, Denise Barbier-Baudry, André Loupy
Rok vydání:	2005
Předmět:	Reaction mechanism Polymers and Plastics Diene Organic Chemistry Alkylation Catalysis chemistry.chemical_compound Monomer chemistry Materials Chemistry Physical chemistry Organic chemistry Reactivity (chemistry) Selectivity Isoprene
Zdroj:	Macromolecular Rapid Communications. 26:46-51
ISSN:	1521-3927 1022-1336
DOI:	10.1002/marc.200400434
Popis:	Isoprene polymerisation performed under microwave irradiation with [Nd(BH 4 ) 3 (THF) 3 ]/Mg(Bu) 2 and [Nd-(BH 4 ) 3 (THE) 3 ]/Al(Et) 3 showed an enhancement in reactivity, with selectivity being only slightly modified. An explanation of the observed effect is proposed based on our current knowledge of the catalytic mechanism and by considering the alkylated complex as an ion pair. An analogy is proposed with the pseudoanionic polymerisation of oxygenated monomers. Finally, depolymerisation is observed under microwave irradiation at high temperature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a277f13455075c175d7c9d1c9ea9fa53 https://doi.org/10.1002/marc.200400434 Zobrazit plný text záznamu Plný text