Thermally activated olefin metathesis catalyst precursor

Details Thermally activated olefin metathesis catalyst precursor Thermally activated olefin metathesis catalyst precursor

1993-12-29

1996-03-26

Nazario-Gonzales, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

556 58, 502162, C07F 1100, B01J 3100

Patent

active

055022286

ABSTRACT:
Molybdenum and tungsten compounds that are useful as catalyst precursors in the metathesis of olefins have the general formula:

REFERENCES:
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Oskam, J. H. et al., "Ligand Variation in Alkylidene Complexes of the Type Mo(CHR)(NR')(OR").sub.2 ", J. Organometallic Chemistry, 459 (1993), pp. 185-198.
Fox, H. H. et al., "Synthesis of Five- and Six-Coordinate Alkylidene Complexes of the Type Mo(CHR) (NAr) OCMe(CF.sub.3).sub.2 !.sub.2 S.sub.x and Their Use as Living ROMP Initiators or Wittig Reagents", Organometallics, 12 (1993), pp. 759-768.
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Quignard, F. et al., "Synthesis and Catalytic Properties of W(OAr).sub.2 Cl.sub.2 (CHCMe.sub.3) (OR.sub.2) and W(OAr).sub.2 Cl(CHCMe.sub.3) (CH.sub.2 CMe.sub.3) (OR.sub.2) (AR=2,6-disubstituted phenyl; R=Et or Pr.sup.i), New Unicomponent Catalysts for Metathesis of Acyclic and Cyclic Olefins, with or without Functional Groups", J. Chem. Soc., Chem. Commun., 1985, pp. 1816-1817.
Kress J. and Osborn, J. A., "Tungsten Carbene Complexes in Olefin Metathesis: A Cationic and Chiral Active SPecies", J. Am. Chem. Soc., 105 (1983), pp. 6346-6347.
Schrock, R. R. et al., "Further Studies of Imido Alkylidene Complexes of Tungsten, Well-Characterized Olefin Metathesis Catalysts with Controllable Activity", Organometallics, 9 (1990), pp. 2262-2275.
Quignard, F. et al., "Aryloxide Ligands in Metathesis of Olefins and Olefinic Esters: Catalytic Behavior of W(OAr).sub.2 Cl.sub.4 Complexes Associated with Alkyl-Tin or Alkyl-Lead Cocatalysts; Alkylation of W(OAr).sub.2 Cl.sub.4 by SnMe.sub.4, Sn(n-Bu).sub.4, Pb(n-Bu).sub.4, Mg Np.sub.2 : Synthesis of W(OAr).sub.2 Cl.sub.2 (CHCMe.sub.3) (OR.sub.2) and W(OAr).sub.2 Cl(CHCMe.sub.3) (CH.sub.2 CMe.sub.3) (OR.sub.2)", J. Molecular Catalysis, 36 (1986), pp. 13-29.
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Fu, G. C. and Grubbs, R. H., "The Application of Catalytic Ring-Closing Olefin Metathesis to the Synthesis of Unsaturated Oxygen Heterocycles", J. Am. Chem. Soc., 114 (1992), pp. 5426-5427.
Ser. No. 08/174,994, filed Dec. 29, 1993, Bell Case 10, "Olefin Metathesis Catalyst Precursors Activated with Alcohols and Phenols".

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