Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – Triple-bond product
Patent
1986-06-17
1987-10-06
Davis, Curtis R.
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
Triple-bond product
502162, 502169, 502171, 526285, C07C 200, B01J 3100
Patent
active
046984518
ABSTRACT:
Described are novel bimetallic complexes particularly useful as homogeneous catalysts for the metathesis of alkynes, and methods for the preparation of such complexes. The complexes are formed from (i) a dirhenium halide having (a) a double or triple bond between a pair of rhenium atoms, and (b) a bis(dihydrocarbylphosphino)alkane coordinated therewith, and (ii) a Group III-A alkoxide in which the alkoxy groups are perfluorinated or are substantially perfluorinated. The complexes can be produced very easily and quickly. All that is required is to establish intimate contact between components (i) and (ii), preferably in an innocuous liquid organic solvent. 3-Heptyne was metathesized in good yields by means of the complex formed from Re.sub.2 Cl.sub.4 (dppm).sub.2 and Al(OCH(CH.sub.3).sub.2).sub.3, and the complex formed from Re.sub.2 Cl.sub.6 (dppm).sub.2 and Al(OCH(CF.sub.3).sub.2).sub.3 (dppm=bis(diphenylphosphino))methane).
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Davis Curtis R.
Ethyl Corporation
Johnson Donald L.
Sieberth John F.
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