Effects of the ponytails of arylphosphines on the hydroformylation of higher olefins in supercritical CO2

Authors
Osuna, AMB Chen, WP Hope, EG Kemmitt, RDW Paige, DR Stuart, AM Xiao, JL Xu, LJ
Citation
Amb. Osuna et al., Effects of the ponytails of arylphosphines on the hydroformylation of higher olefins in supercritical CO2, J CHEM S DA, (22), 2000, pp. 4052-4055
Citations number
40
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
ISSN journal
1470479X → ACNP
Issue
22
Year of publication
2000
Pages
4052 - 4055
Database
ISI
SICI code
1470-479X(2000):22<4052:EOTPOA>2.0.ZU;2-E
Abstract
A series of ponytail-appended arylphosphines P(C6H4R-m)(3) (m=4, R=n-C6F13 1, n-CH2CH2C6F13 3, n-C6H13 4, n-C10H21 5 or n-C16H33 6; m=3, R=n-C6F13 2) have been studied in the rhodium-catalysed hydroformylation of higher olefi ns in supercritical CO2 (scCO(2)), with the perfluoroalkylated ligands exhi biting the highest and the alkylated one the lowest activities. The high ra tes derived from 1 and 2 probably originate from the strong electron-withdr awing effect of their ponytails, while the slow rates observed with 4-6 are mainly due to the low solubility of these ligands in scCO(2).