Interest in the chemistry of ferrocene remains intense, largely due to applications within catalysis. New synthetic routes to unsymmetrical ferrocene ligands have provided another facet to this area, as substituents can be designed to be electronically- and/or sterically-distinct in order to affect the environment around the catalytically-active metal centre. This critical review provides a concise summary of the synthetic routes that have been applied to the synthesis of unsymmetrical ferrocene ligands, along with a systematic survey of the applications of these ligands in homogeneous catalysis. The aim is to help the reader select a suitable ferrocenediyl ligand for a particular synthetic application, and in the synthesis of ligands that require particular structural and/or electronic features. (186 references.)

The syntheses and catalytic applications of unsymmetrical ferrocene ligands.

Palladium-catalyzed carbonylation reactions of alkenes and alkynes with different nucleophiles have undergone rapid development ever since the seminal work of Reppe back in the 1930s. Nowadays, a plethora of palladium catalysts and various synthetic protocols are available for the synthesis of valuable carboxylic acids and acrylic acids as well as their derivatives. Herein, we summarize the recent catalyst developments and selected organic applications in this area.

Palladium-Catalyzed Carbonylation Reactions of Alkenes and Alkynes

Synthesis of a Novel C2-Symmetric Thiourea and Its Application in the Pd-Catalyzed Cross-Coupling Reactions with Arenediazonium Salts under Aerobic Conditions

Performances of symmetrical achiral ferrocenylphosphine ligands in palladium-catalyzed cross-coupling reactions: A review of syntheses, catalytic applications and structural properties

Emmanuelle Bentabet

Papers

Structural diversity in coordination chemistry of tridentate and tetradentate polyphosphines of Group 6 to 10 transition metal complexes

New 1,1%- or 1,2- or 1,3-bis(diphenylphosphino)ferrocenes

Rhodium and palladium complexes from 1,1′ and 1,2 ferrocenylphosphine as bidentate ligands. Versatile coordination

1,1′,2,2′-Tetrakis(diphenylphosphino)-4,4′-di-tert-butylferrocene, a new cisoid arrangement of phosphino groups