Roelen reaction

Rodium complexes Rod-like liquid crystals Rod nulls Roelen reaction Rohypnol Roica... 

C-19 dicarboxyhc acid can be made from oleic acid or derivatives and carbon monoxide by hydroformylation, hydrocarboxylation, or carbonylation. In hydroformylation, ie, the Oxo reaction or Roelen reaction, the catalyst is usually cobalt carbonyl or a rhodium complex (see Oxo process). When using a cobalt catalyst a mixture of isomeric C-19 compounds results due to isomerization of the double bond prior to carbon monoxide addition (80). 

Cornils, B., Hydroformylation, Oxo Synthesis, Roelen Reaction New Synthesis with Carbon Monoxide, Springer Verlag, Berlin, New York, 1980, pp. 1-224. 

Frohning CD, Kohlpaintner CW, Bohnen H-W (2002) Hydroformylation (Oxo Synthesis, Roelen Reaction) In Cornils B, Herrmann WA (eds) Applied homogeneous catalysis with organometallic compounds, vol 1. Wiley, Weinheim, p 31 Htocu D, Beckman E (2001) Green Chem 3 80... 

Roelen reaction -C-19 dicarboxylic acids from [DICARBOXYLIC ACIDS] (Vol 8)... 

Due to the observation that ethylene yields not only propanal but also some diethyl ketone, it was assumed at first that as well as aldehydes and ketones, ergo, 0x0 compounds can be generated, and the reaction was termed 0x0 synthesis or oxonation. The correct expression, hydroformylation, was introduced later by Adkins [3]. Some tentative approaches to link the discoverer s name to the reaction ( Roelen Reaction ) have earned only a limited response. The ratio of linear in-) and branched iso-) aldehydes is referred to as n/iso (or n/i) ratio. 

Hydroformylation refers to the addition of hydrogen and carbon monoxide to unsaturated systems. The hydroformylation of olefins is also known as the oxo synthesis or the Roelen reaction in honor of its inventor. It is one of the major industrial processes. Technical plants use cobalt- or rhodium-based catalysts the active species are supposed to be mononuclear complexes (194). The most desired oxo product is butanal, generated by the hydroformylation of propylene (195). 

The most important and oldest application of aqueous biphasic, homogeneous catalysis is hydroformylation (oxo process, Roelen reaction). This process is used to produce n-butyraldehyde, the desired main product of the reaction of propylene, which is converted by aldolization into 2-ethyUiexenal and this is finally hydrogenated to give 2-ethylhexanol (2-EH), the most economically important plasticizer alcohol (Scheme 1) ... 

The Hydf oformylation Reaction Oxo Reacdon/Roelen Reaction... 

A reaction closely related to olefin hydroformylation is the Reppe alcohol synthesis [239, 1003]. It is carried out in alkaline media with Fe(CO)5 catalyst and differs from the Roelen reaction in that water is used instead of hydrogen, with the result that alcohols are obtained directly at lower temperatures. The active catalyst is believed to be a salt of the iron hydrocarbonyl. 

The Hydroformylation Reaction Oxo Reaction/Roelen Reaction 6.4. Unsaturated Esters... 

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