A good bargain: An inexpensive, air-stable ruthenium metathesis catalyst derived from α-asarone

European Journal of Organic Chemistry

Volumn , Issue 6, 2003, Pages 963-966

  Grela, Karol ^a   Kim, Mikhail ^a  

^a INSTITUTE OF ORGANIC CHEMISTRY   (Poland)

Author keywords

Homogeneous catalysis; Metathesis; Olefins; Ruthenium

Indexed keywords

ALPHA ASARONE; CARBENE; FUNCTIONAL GROUP; RUTHENIUM;

AIR QUALITY STANDARD; ARTICLE; CATALYST; RECYCLING; SYNTHESIS;

EID: 0037355464     PISSN: 1434193X     EISSN: None     Source Type: Journal    
DOI: 10.1002/ejoc.200390151     Document Type: Article

References (44)

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37. Extensive studies described in ref. 8a and 8b suggest that steric bulk adjacent to the chelating isopropoxy moiety of 4 and 5 is the crucial factor securing the unusually high activity of these complexes.
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40. The ruthenium carbene 7 can be prepared in similar yield (96%) from the isomeric β-asarone, -6. Taking into account, however, the lower price and higher purity of the commercial material, the use of the (E)-isomer is preferred. The asarones are available from Fluka AG.
41. Catalysts 1a and 1b are available from Aldrich Chemical Co.
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43. 2iPr instead of -OiPr) reduce the catalytic activity of the corresponding complex: A. Fürstner, O. R. Thiel, C. W. Lehmann, Organometallics 2002, 21, 331-335.
44. Phoshane-free complex 2b is now available from Aldrich Chemical Co.