Abstract
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Highlights
The formation of long chain linear aldehydes by hydroformylation of terminal alkenes is a very important industrial process in the production of plasticisers, soaps and detergents.[1,2] If the problem of catalyst separation could be overcome, rhodium based catalysts would be preferred over the currently used cobalt because of the milder operating conditions they require and their better selectivity to the desired linear products.[1,2] A promising approach to the separation involves reactions in the fluorous biphase
The catalyst is designed to be preferentially soluble in the fluorous phase and the product is contained in the organic phase
We report that triaryl-phosphines or -phosphites containing fluorous ponytails can give higher rates and linear selectivities, if the organic co-solvent is omitted
Summary
The formation of long chain linear aldehydes by hydroformylation of terminal alkenes is a very important industrial process in the production of plasticisers, soaps and detergents.[1,2] If the problem of catalyst separation could be overcome, rhodium based catalysts would be preferred over the currently used cobalt because of the milder operating conditions they require and their better selectivity to the desired linear products.[1,2] A promising approach to the separation involves reactions in the fluorous biphase. We report that triaryl-phosphines or -phosphites containing fluorous ponytails can give higher rates and linear selectivities, if the organic co-solvent (toluene) is omitted.
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