反应详情

温度

110 °C

345 g of 4-acetoxy-4'-acetylbiphenyl were suspended in 2.6 l of propionic acid. 2.6 g of cobalt(II) acetate, 10.1 g of manganese(II) acetate and 375 g of acetic anhydride were added to this suspension, and the mixture was heated to 110° C. The mixture was stirred for 15 minutes at 110° C., after which it was gassed with air via a valve in the base. After gassing had been carried out for 90 minutes at 110° C., the reaction was complete; the reaction mixture was discharged through the valve in the base, and the product was filtered off under suction and washed with petroleum ether. 291.3 g (84% yield) of acetoxybiphenylcarboxylic acid having a purity of 99.9% (HPLC) were obtained.

1. customafter which it was gassed with air via a valve in the base
2. waitAfter gassing had been carried out for 90 minutes at 110° C.
3. filtrationthe product was filtered off under suction
4. washwashed with petroleum ether