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Novel Ruthenium( II ) 2 Carboxylates as Catalysts for Alkene Metathesis
Author(s) -
Buchowicz Wlodzimierz,
Ingold Florent,
Mol Johannes C.,
Lutz Martin,
Spek Anthony L.
Publication year - 2001
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/1521-3765(20010702)7:13<2842::aid-chem2842>3.0.co;2-o
Subject(s) - metathesis , ruthenium , chemistry , alkene , catalysis , salt metathesis reaction , medicinal chemistry , reactivity (psychology) , organic chemistry , stereochemistry , medicine , polymer , alternative medicine , pathology , polymerization
The reactions of [Ru(=CHR)Cl 2 (PCy 3 ) 2 ] ( 1 : R=Ph; 1 a : R=−CH=CPh 2 ) with silver salts of carboxylic acids afforded new dimeric complexes of the general formula [Ru 2 (=CHR) 2 (R′CO 2 ) 2 (μ‐R′CO 2 ) 2 (PCy 3 ) 2 (μ‐H 2 O)] ( 2 : R=Ph, R′=CF 3 ; 3 : R=Ph, R′=C 2 F 5 ; 4 : R=−CH=CPh 2 , R′=CF 3 ; 5 : R=Ph, R′=C 6 F 5 ; 6 : R=−CH=CPh 2 , R′=C 6 F 5 ; 7 : R=‐CH=CPh 2 , R′=CCl 3 ) in good yields. With R′=CF 3 , C 2 F 5 or CCl 3 these complexes are active catalysts for metathesis of acyclic alkenes, including unsaturated fatty acid esters, as well as for ring closing metathesis. The reactivity of these complexes with bases and weak donor solvents has been studied and their half‐life times in several media were determined.