Highly (regio)selective hydroformylation of olefins using self-assembling phosphines.

Identificador:  imarina:9374797

Handle: https://hdl.handle.net/20.500.11797/imarina9374797

Autors:  Pierre Fablet; M. Martínez; Anke Spannenberg; Haijun Jiao; Ralf Jackstell; Matthias Beller

Resum:
New phosphines with self-assembling 6-pyridinone moities were prepared, characterized, and examined in the hydroformylation of diverse olefins. Testing various known and novel ligands in the presence of [Rh(acac)(CO)2] under industrially relevant conditions, the hydroformylation of 1-octene proceeds best with 6,6'-(phenylphosphanediyl)bis(pyridin-2(1H)-one) (DPONP). Control experiments and modelling studies indicate dimerization of this ligand at higher temperatures (>100 °C). The optimal catalyst system is able to conserve high product linearity (>90%) for a broad range of olefins at industrially-employed temperatures at low ligand loading.