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Olefin Metathesis in Compressed Carbon Dioxide
Author(s) -
Fürstner Alois,
Koch Daniel,
Langemann Klaus,
Leitner Walter,
Six Christian
Publication year - 1997
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.199724661
Subject(s) - romp , ring opening metathesis polymerisation , metathesis , supercritical carbon dioxide , supercritical fluid , catalysis , salt metathesis reaction , chemistry , ring closing metathesis , polymerization , organic chemistry , acyclic diene metathesis , olefin metathesis , polymer
The product distribution can be controlled by varying the density of the reaction medium when olefin metatheses of acyclic dienes are carried out in supercritical CO 2 (scCO 2 ), as shown below. Substrates with NH groups, which are generally not tolerated in conventional solvents, are compatible with Ru‐based metathesis catalysts in scCO 2 . Avoidance of potentially hazardous organic solvents, simple isolation of the products, and the recovery of the catalysts in active form are additional practical advantages associated with using compressed CO 2 as reaction medium for ring‐closing metathesis (RCM) and ring‐opening metathesis polymerization (ROMP).