2-Ethylhexyl acrylate → Octinoxate

関与物質

反応条件

反応手順

Charge 6.8 gallons of molten 4-iodoanisole from step 1, 11.4 gallons 2-ethylhexylacrylate (83.8 pounds), 7.3 gallons triethylamine (44 pounds), and 0.6 pounds of 5% palladium on carbon catalyst (dry) to a 50 gallon tank. With good agitation, begin heating. Heat to 100° -105° C. to reflux. The reflux temperature will gradually increase to about 140-145° C. The total time of reaction above 100° C. will be about 2-4 hours. After the reaction is complete, as determined by gas chromatography, cool the reaction mixture to 25° -30° C. Filter to collect the palladium catalyst and the resulting triethylamine hydroiodide salt. Wash the filtered product with 20 gallons of water to remove any soluble salt. Allow the phases to separate. The top organic product phase is ready for distillation. Its volume is about 15 gallons containing about 119 pounds of product.

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