Synthesis of novel heteroditopic carbene–pyridine palladium(II) chloro vinyl complexes. Comparative reactivity of different palladium vinyl derivatives toward transmetalation with alkynyl stannane

Autor:	Luciano Canovese, Claudio Santo, Fabiano Visentin, Carlo Levi
Rok vydání:	2013
Předmět:	Steric effects chemistry.chemical_element Stannane Stille reaction Inorganic Chemistry chemistry.chemical_compound Transmetalation chemistry Pyridine Polymer chemistry Materials Chemistry Organic chemistry Reactivity (chemistry) Physical and Theoretical Chemistry Carbene Palladium
Zdroj:	Inorganic Chemistry Communications. 32:74-77
ISSN:	1387-7003
DOI:	10.1016/j.inoche.2013.03.026
Popis:	DeC-activated alkynes such as di-t-butyl-ethyne-dicarboxylate (DTA) or the more reactive dimethyl-ethyne-dicarboxylate (DMA) do not react with palladium(II) chloro methyl complexes bearing heteroditopic carbene–pyridine (C–N) as spectator ligands to give the corresponding vinyl derivatives. In order to prepare this type of derivatives we resorted to a dedicated synthetic protocol based on the displacement of labile pyridine-thioether ligands of vinyl palladium pyridine-thioeter species by the carbene–pyridine ligand of carbene–pyridine silver chloride complexes. However, the novel carbene–pyridine vinyl complexes obtained by such synthetic protocol, if compared with other palladium vinyl species with similar steric requirements, display a markedly reduced reactivity toward transmetalation with ethynyl-stannane.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5efbfb91dbea369e16e9be659549cfea https://doi.org/10.1016/j.inoche.2013.03.026 Zobrazit plný text záznamu Full Text from ScienceDirect