Aqueous-biphasic hydroformylation of higher alkenes promoted by alkylimidazolium salts.

Aqueous-biphasic hydroformylation of higher alkenes (>C5) can be greatly accelerated by addition of 1-octyl-3-methylimidazolium bromide without affecting the phase separation and with good catalyst retention in the aqueous phase.

Synthesis and characterization of a novel cobalt carbonyl N-heterocyclic carbene salt. Crystal structure of [Co(CO)(3)(IMes)(2)](+)[Co(CO)(4)](-).

The disproportionation of dicobalt octacarbonyl induced by the free carbene 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) and the X-ray characterization of the cyclohexane solvate of the resulting cobalt carbonyl N-heterocyclic carbene salt, [Co(CO)3(IMes)2]+[Co(CO)4]-.1/4C6H12, is reported. The crystal structure represents the first example of a [Co(CO)3(L)2][Co(CO)4] disproportionate salt reported to date.

Highly selective formation of linear esters from terminal and internal alkenes catalysed by palladium complexes of bis-(di-tert-butylphosphinomethyl)benzene.

The methoxycarbonylation of terminal or internal alkenes catalysed by palladium complexes of bis-(di-tert-butylphosphinomethyl)benzene under mild conditions leads to linear esters in 99% selectivity via a hydride mechanism.

The synthesis and X-ray structure of the first cobalt carbonyl-NHC dimer. implications for the use of NHCs in hydroformylation catalysis.

The synthesis, X-ray structure, and catalytic properties of the first cobalt carbonyl dimer supported by a N-heterocyclic carbene ligand Co(2)(CO)(6)(IMes)(2) [IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene] is reported.

Hydroformylation in fluorous solvents.

Triaryl-phosphines and -phosphites bearing fluorous ponytails give high rates, good linear selectivity and good retention of catalyst in the fluorous phase during hydroformylation of alkenes in fluorous solvents.