反应详情

55.4 g (0.2 mol) of ethyl 2-cyano-3,3-diphenylacrylate (Uvinul 3035), 100 ml of 2,2,6-trimethylcyclohexanol and 4 g of Na2CO3 were reacted with one another at 184-186° C. with distillative removal of the ethanol formed, assisted by a stream of nitrogen. After about 3 h, the reaction mixture was filtered hot in order to remove the Na2CO3. After the filtrate had been cooled, it was distilled under reduced pressure, giving 55 g (74%) of 2,2,6-trimethylcyclohexyl 2-cyano-3,3-diphenylacrylate [λmax=304 nm, E11=351] as a colorless solid.

1. customwith distillative removal of the ethanol
2. customformed
3. filtrationthe reaction mixture was filtered hot in order
4. customto remove the Na2CO3
5. temperatureAfter the filtrate had been cooled
6. distillationit was distilled under reduced pressure