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Carbonyl Olefinating Carbene‐Tungsten Complexes and Their Suitability as Catalysts in Olefin‐Metathesis
Author(s) -
Kauffmann Thomas,
Abeln Renate,
Welke Siegfried,
Wingbermühle Dorothea
Publication year - 1986
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198609091
Subject(s) - carbene , tungsten , molybdenum , olefin metathesis , catalysis , metathesis , chemistry , olefin fiber , solvent , salt metathesis reaction , in situ , polymer chemistry , organic chemistry , polymerization , polymer
Noteworthy properties as CH 2 transferring agents are exhibited by the tungsten complexes having the postulated structures 1 and 2 , which are prepared in situ. They are the first tungsten complexes that are suitable for carbonylolefination ( 1 reacts with aldehydes and ketones, 2 preferentially with ketones); they are more stable than the known molybdenum complexes of this kind, and 2 can catalyze olefin metathesis. The solvent has a large effect on all of these reactions.