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Catalytic Stereoselective [2,3]-Rearrangement Reactions

Thomas H. West, Stéphanie S. M. Spoehrle, Kevin Kasten, James E. Taylor, and Andrew D. Smith

[2,3]-Sigmatropic rearrangement processes of allylic ylides or their equivalents can be applied to a variety
of different substrates and generate products of wide interest/applicability to organic synthesis. This review describes the
development and applications of stereoselective [2,3]-rearrangement reactions in which a substoichiometric amount of a catalyst
is used in either the formation of the reactive intermediate or the [2,3]-rearrangement step itself.

Bioinspired Catalyst Design and Artificial Metalloenzymes

Deuss PJ, den Heeten R, Laan W, Kamer PC.

Many bioinspired transition-metal catalysts have been developed over the recent years. In this review the progress in the design and application of ligand systems based on peptides and DNA and the development of artificial metalloenzymes are reviewed with a particular emphasis on the combination of phosphane ligands with powerful molecular recognition and shape selectivity of biomolecules. The various approaches for the assembly of these catalytic systems will be highlighted, and the possibilities that the use of the building blocks of Nature provide for catalyst optimisation strategies are discussed.

Alternative approaches for the aqueous–organic biphasic hydroformylation of higher alkenes

Lorenz Obrecht, Paul C. J. Kamer, Wouter Laan

The biphasic hydroformylation of linear alkenes using the Rh–TPPTS catalyst system is one of the cornerstones of aqueous biphasic catalysis, but due to mass-transfer limitations its application is restricted to short alkenes. This perspective provides an overview of various alternative approaches which have been developed to extend the aqueous biphasic methodology to the hydroformylation of higher alkenes.

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