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Solid‐Liquid Biphasic Hydroformylation of Olefins Catalyzed by Rhodium Carbonyl Complexes
Author(s) -
Marchetti M.,
Botteghi C.,
Paganelli S.,
Taddei M.
Publication year - 2003
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200303053
Subject(s) - hydroformylation , chemistry , rhodium , aldehyde , xantphos , dichloromethane , catalysis , trifluoroacetic acid , regioselectivity , organic chemistry , polymer chemistry , cyclohexene , palladium , solvent
Some polymer‐anchored alkenes have been hydroformylated by carrying out the reaction in a high‐pressure reactor equipped with a suitably designed vial. The solid substrates are converted to the corresponding oxo ‐aldehydes in high yields. In all cases the regioselectivity was strongly shifted towards the linear aldehyde when the rhodium carbonyl complex was modified with xantphos (3 : 1 or 4 : 1 P/Rh molar ratio). Treatment with 5% of trifluoroacetic acid in dichloromethane at room temperature removed quantitatively the oxo ‐product from the polymer support, which can be purified and reused.