反应详情

38.4 g of 2-hydroxybenzylalcohol from TOKYO KASEI KOGYO Co., Ltd. and 80 ml of o-xylene were put in a reaction reservoir having a mixer, a thermometer and a dropping funnel. Under a nitrogen stream, 62.8 g of triethylphosphite were slowly dropped therein at 80° C., and the reaction therein is further performed for 1 hr at the same temperature. Then, the produced ethanol, o-xylene and unreacted triethyl phosphite were removed from the reaction by reduced-pressure distillation to prepare 66 g of 2-diethylhydroxybenzylphosphonate at a yield of 90%, having a boiling point of 120.0° C./1.5 mm Hg.

1. customat 80° C., and the reaction
2. customThen, the produced ethanol, o-xylene and unreacted triethyl phosphite were removed from the reaction by reduced-pressure distillation
3. customto prepare 66 g of 2-diethylhydroxybenzylphosphonate at a yield of 90%