A modular family of phosphine-phosphoramidite ligands and their hydroformylation catalysts: steric tuning impacts upon the coordination geometry of trigonal bipyramidal complexes of type [Rh(H)(CO)(2)P boolean AND P*)]

作者：How Rebecca C^*; Hembre Robert; Ponasik James A; Tolleson Ginette S; Clarke Matthew L

来源：Catalysis Science & Technology, 2016, 6(1): 118-124.

DOI：10.1039/c5cy00886g

Four new phosphine-phosphoramidite bidentate ligands have been synthesised and studied in rhodium-catalysed hydroformylation. Variable temperature NMR studies have been used along with HPIR to investigate the coordination mode of the trigonal bipyramidal complexes formed from [Rh(acac)CO)(2)], ligand and syngas. It was found that small changes to the ligand structure have a large effect on the geometry of the active catalytic species. The rhodium catalysts of these new ligands were found to give unusually high iso-selectivity in the hydroformylation of propene and 1-octene.

• 出版日期2016