Hydrogenation & Isomerization of Alkenes
Published Online: 15 DEC 2011
Copyright © 2011 John Wiley & Sons, Ltd. All rights reserved.
Encyclopedia of Inorganic and Bioinorganic Chemistry
How to Cite
Jardine, F. H. 2011. Hydrogenation & Isomerization of Alkenes. Encyclopedia of Inorganic and Bioinorganic Chemistry. .
- Published Online: 15 DEC 2011
Alkenes are isomerized by complexes of late, second or third series transition metals. This occurs either by successive β-hydride abstraction reactions or, more rarely, by a π–allylic mechanism. Both decyclization and annulation reactions of strained, cyclic hydrocarbons are catalyzed by these complexes. Palladium complexes are active catalysts for the Cope- and Claisen rearrangements. Homogeneous, catalytic hydrogenation can occur via three possible routes. Ruthenium complexes catalyze transfer hydrogenation. Catalyst modifications can be made to minimize by-product formation during hydrogenation or deuteriation.
- cyclization and annulation;
- hydrido complexes;
- iridium complex catalysts;
- rhodium complex catalysts;
- ruthenium complex catalysts;
- sigmatropic rearrangements;
- tertiary phosphine complexes