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Cascade Reactions in Polymeric Nanoreactors: Mono (Rh)‐ and Bimetallic (Rh/Ir) Micellar Catalysis in the Hydroaminomethylation of 1‐Octene
Author(s) -
Gall Barbara,
Bortenschlager Martin,
Nuyken Oskar,
Weberskirch Ralf
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700634
Subject(s) - chemistry , rhodium , hydroformylation , catalysis , selectivity , bimetallic strip , polymer chemistry , 1 octene , yield (engineering) , amine gas treating , organic chemistry , ethylene , materials science , metallurgy
The concept of micellar catalysis was transferred to the hydroaminomethylation of 1‐octene with N,N ‐dimethylamine. In the first series of experiments a rhodium( I ) complex with amphiphilic triphenylphosphane functionalized poly(2‐oxazoline)s as macroligand was applied as catalyst. Results obtained under standard hydroformylation conditions ( T = 100 °C, p = 50 bar) were not satisfying with regard to activities and selectivities of the hydroaminomethylation reaction. Rising the temperature to 150 °C increased the yield of amine to 22% with a corresponding n/iso selectivity of 7.5 and a TOF number of 461 h −1 . Best results were obtained by applying a dual Rh/Ir catalyst within the polymeric micelles leading at lower temperature of 130 °C to an amine yield of 24% with a corresponding n/iso selectivity of 11 and TOF numbers of about 600 h −1 .