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- W3094810151 abstract "Abstract The ring‐opening of epoxidized methyl oleate by aqueous H 2 O 2 has been studied using tungsten and molybdenum catalysts to form the corresponding fatty β‐hydroxy hydroperoxides. It was found that tungstic acid and phosphotungstic acid gave the highest selectivities (92–93 %) towards the formation of the desired products, thus limiting the formation of the corresponding fatty 1,2‐diols. The optimized conditions were applied to a range of fatty epoxides to give the corresponding fatty β‐hydroxy hydroperoxides with 30–80 % isolated yields (8 examples). These species were fully characterized by 1 H and 13 C NMR spectroscopy and HPLC‐HRMS, and their stability was studied by differential scanning calorimetry. The thermal cleavage of the β‐hydroxy hydroperoxide derived from methyl oleate was studied both in batch and flow conditions. It was found that the thermal cleavage in flow conditions gave the highest selectivity towards the formation of aldehydes with limited amounts of byproducts. The aldehydes were both formed with 68 % GC yield, and nonanal and methyl 9‐oxononanoate were isolated with 57 and 55 % yield, respectively. Advantageously, the overall process does not require large excess of H 2 O 2 and only generates water as a byproduct." @default.
- W3094810151 created "2020-11-09" @default.
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- W3094810151 date "2020-11-12" @default.
- W3094810151 modified "2023-09-26" @default.
- W3094810151 title "Biobased Aldehydes from Fatty Epoxides through Thermal Cleavage of β‐Hydroxy Hydroperoxides**" @default.
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- W3094810151 doi "https://doi.org/10.1002/cssc.202002364" @default.
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