Cobalt(ii)-catalysed transfer hydrogenation of olefins

Abstract

Catalytic transfer hydrogenation of olefins is achieved by an earth-abundant metal cobalt catalyst. A range of alkene substrates including those with functional groups have been hydrogenated in high yields.

Cobalt–Pincer Complexes in Catalysis

“…Also, the N‐methylated Co–pincer species 10 c displayed similar activity for the transfer hydrogenation of acetophenone as 10 a , showing that metal–ligand cooperativity is not required for this catalysis. This nice work was completed by Zhang demonstrating the catalytic applicability of 10 a for the transfer hydrogenation of substituted terminal and internal olefins under similar conditions (Scheme , reaction c) …”

“…This nice work was completed by Zhang demonstrating the catalytic applicabilityo f10 a for the transfer hydrogenation of substituted terminal and internal olefins under similar conditions (Scheme9,r eaction c). [47] As elective stereo-divergent Co-catalysed transfer hydrogenation of alkynes to Z-a nd E-alkenes was developedb yL iu and co-workers (Scheme10). [48] In more detail,t hey found that the stereocontrol for the semihydrogenation of alkyness trongly depends on the ligand type of the applied Co-pincer catalyst.…”

Cobalt Pincer Complexes for Catalytic Reduction of Carboxylic Acid Esters

“…Cobalt compounds, and here especially cobalt pincer type complexes, have been developed for a number of catalytic transformations such as polymerization, bond‐forming reactions, hydrogenations, transfer hydrogenations, hydrosilylations/hydroborations or N 2 activation . Although cobalt‐based reductions of ketones,, aldehydes , nitriles, or alkenes,,, have been studied, until now, hydrogenation of carboxylic acid esters in the presence of this metal has been scarcely examined…”

Ionic [Ru] complex with recyclability by electro-adsorption for efficient catalytic transfer hydrogenation of aryl ketones

“…FT 4 ]PF 6 (0.75 mmol) were placed into a three-neck fl ask with 30 mL of dry CH 3 CN under nitrogen atmosphere, and the mixture was heated to refl ux with stirring for 0.5 h. After cooling, the solvent was removed under reduced pressure. The oily precipitation produced after the dry CH 2 Cl 2 extraction and hexane addition, and the wet solid was obtained after the supernatant was removed by suction and the solvent was removed by pumping.…”