Spiroketal-Based Phosphorus Ligands for Highly Regioselective Hydroformylation of Terminal and Internal Olefins
作者:Xiaofei Jia、Zheng Wang、Chungu Xia、Kuiling Ding
DOI:10.1002/chem.201203042
日期:2012.11.26
hydroformylation of terminalolefins. Remarkably, the catalysts were also found to be efficient in the isomerization–hydroformylation of some internal olefins, to regioselectively afford the linear aldehydes with TON values of up to 2.0×104 and l/b ratios in the range of 23.4–30.6. X‐ray crystallographic analysis revealed the cis coordination of the ligand in the precatalyst [Rh(3 d)(acac)], whereas
Novel spiroketal-based diphosphite ligands for hydroformylation of terminal and internal olefins
作者:Xiaofei Jia、Zheng Wang、Chungu Xia、Kuiling Ding
DOI:10.1039/c3cy00187c
日期:——
Spiroketal-based diphosphite ligands have been developed for the rhodium-catalyzed hydroformylation reaction. Under the optimized reaction conditions, a turnover number (TON) of up to 2.4 × 104 and a linear to branched ratio (l/b) of up to 93 were obtained in the hydroformylation of terminal olefins. The catalysts were also found to be effective in the isomerization–hydroformylation of some internal olefins.