Colloidal polymer particles as catalyst carriers and phase transfer agents in multiphasic hydroformylation reactions

Multiphasic aqueous hydroformylation of 1-alkenes with micelle-like polymer particles as phase transfer agents

“…The monomers and the polymer particles used as phase transfer agents and catalyst carriers in multiphasic hydroformylation reactions were synthesized according to the literature. 22 Multiphasic hydroformylation reactions 1-Octene hydroformylation. [Rh(acac)(CO) 2 ] and the phosphine ligands were introduced in the autoclave under argon, together with the polymer particles suspended in 20 ml of water.…”

“…18,19 Colloidal, micelle-like polymer particles have been shown to be viable phase transfer agents for multiphasic hydroformylation reactions, although their role in enabling mass transfer has not been fully understood yet. [22][23][24] The particles have a cross-linked polystyrene core, a polyethylene glycol (PEG) shell, making them water soluble, and are functionalized with cationic ammonium salts. This means that any anionic ligand will interact with them, making them exible in terms of applicability.…”

“…The products were extracted with diethylether, which enabled the recycling of the particles and catalyst but still required an undesired cosolvent. 22 In this work, the performance of functionalized polymer particles as phase transfer agents and catalyst carriers has been further investigated for the hydroformylation of long chain alkenes. Ligands with different stereoelectronic properties have been evaluated.…”

Reusable Catalysts for Hydroformylation‐Based Reactions

“…Vogt et al [102,104] reported the combination of Rh/sulfonated phosphines with colloidal, micelle-like polymer particles (Figure 17), which were used as phase transfer agents in the hydroformylation of oct-1-ene. The catalytic application of the Rh/tppts system 23, using 100 bar of syngas at 80°C, led to 74 % olefin conversion, with selective formation of the aldehyde products (95 % chemoselectivity) and a linear/branched ratio of 2.4.…”

“…Adapted from ref. [102] biphasic conditions, some studies on transfer agents have been reported. Several functionalized cyclodextrins were evaluated by Monflier et al [108] The system Rh/tppts was combined with several cyclodextrins in the hydroformylation of hexadec-1-ene (80°C and 50 bar CO/H 2 ) and up to 67 % conversion and 52 % aldehyde chemoselectivity was obtained.…”