New bimetallic rhodium-zirconium catalysts for homogeneous olefin hydroformylation

✍ Scribed by Anna M. Trzeciak; Józef J. Ziółkowski; Robert Choukroun

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 474 KB
• Volume: 110
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/1381-1169(96)00200-2

✦ Synopsis

Catalytic activity of bimetallic system composed with Rh(acacXCO), and cp,Zr(CH,PPh,), or cpJrH(CH,PPh,) (cp = C,H,)

in hex-1-ene, l&hexadiene and 1,7-octadiene hydroformylation have been studied at 8O"C, 10 atm of Hz/CO = 1. Hydroformylation of hex-1-ene produces normal and branched aldehydes of 6945% yield and n/ho ratio 1 X-2.0. Hydroformylation of dienes gives unsaturated monoaldehydes (ca. 30% yield). Applying 'H, 3'P NMR, UV-VIS and IR spectroscopy the following complexes have been identified: Rh(acacXCO),L (11, Rh(acacxCOxL) (21, and Rh,(CO),L,,_X (3) (where: L = cp2Zr(CH2PPh:,)2, cp,ZrH(CH,PPh,),

x = 8-11).