Tandem Hydroformylation–Hydrogenation of 1‐Decene Catalyzed by Rh‐Bidentate Bis(trialkylphosphine)s
2008; Wiley; Volume: 3; Issue: 8-9 Linguagem: Inglês
10.1002/asia.200800163
ISSN1861-4728
AutoresTakeo Ichihara, Koji Nakano, Masaya Katayama, Kyoko Nozaki,
Tópico(s)Carbon dioxide utilization in catalysis
ResumoA series of 2,2'-bis[(dialkylphosphino)methyl]biphenyls (alkyl-BISBIs) were synthesized and applied to the tandem hydroformylation-hydrogenation of 1-decene. The alkyl-BISBI ligands with "small" primary alkyl groups such as methyl or n-hexyl groups on the phosphorus atoms provided 1-alkanols selectively, whereas those with larger alkyl groups such as isopropyl or neopentyl groups showed much lower conversion from alkanals to alkanols. Observation of rhodium complexes of the BISBI-type ligands under H(2)/CO atmosphere revealed that the presence of a stable [RhH(CO)(2)(ligand)] species seems to be less favorable for the second step, the hydrogenation of aldehydes.
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