Heavy terminal alkenes can be hydroformylated at a significant rate by using the water-soluble catalyst precursor [Rh 2 (µ-StBu) 2 (CO) 2 (TPPTS) 2 ] and β-cyclodextrin or its dimethylated form as phase-transfer agent. A study of the recycling has shown that the aqueous phase can be directly reintroduced into catalysis and also that each new run presents a slightly
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