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Degradation of the Second‐Generation Grubbs Metathesis Catalyst with Primary Alcohols and Oxygen − Isomerization and Hydrogenation Activities of Monocarbonyl Complexes
Author(s) -
Dinger Maarten B.,
Mol Johannes C.
Publication year - 2003
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200200702
Subject(s) - imes , chemistry , isomerization , metathesis , ruthenium , catalysis , medicinal chemistry , salt metathesis reaction , carbene , organic chemistry , polymer , polymerization
Reaction of the second‐generation Grubbs metathesis catalyst [RuCl 2 (=CHPh)(H 2 IMes)(PCy 3 )] ( 2 ) (H 2 IMes = 1,3‐dimethyl‐4,5‐dihydroimidazol‐2‐ylidene) with primary alcohols in the presence of a base produced the complexes [RuClH(CO)(PCy 3 ) 2 ] ( 3 ) and [RuClH(CO)(H 2 IMes)(PCy 3 )] ( 5 ). When benzyl alcohol was used, the ruthenium phenyl complexes [RuClPh(CO)(PCy 3 ) 2 ] ( 4 ) and [RuClPh(CO)(H 2 IMes)(PCy 3 )] ( 7 ) were formed in addition to 3 and 5 . Complex 7 , characterised by an X‐ray structure analysis, was also formed on exposure of 2 to oxygen. The isomerization and hydrogenation activity of 7 was determined and compared with that of 3 and 4 . (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)