反应详情

Approximately 86 g of 1,2-hexadecanediol and approximatel 200 g toluene solvent was charged to a 1 liter reactor equipped with agitator, heater and Dean-Stark tube with condenser. The contents wee heated up to ~80°-90° C. to dissolve the diol and approximately 11 g boric acid was added. The mixture was heated up to 155° C. until water evolution stopped over a period of ~4 hours. Approximately 9 ml water was removed by azeotropic distillation. The solvent was removed by vacuum distillation and the product was filtered at 100° C. through diatomaceous earth. The product became waxy after cooling.

1. customequipped with agitator, heater and Dean-Stark tube with condenser
2. temperatureThe contents wee heated up to ~80°-90° C.
3. additionwas added
4. waitstopped over a period of ~4 hours
5. customApproximately 9 ml water was removed by azeotropic distillation
6. customThe solvent was removed by vacuum distillation
7. filtrationthe product was filtered at 100° C. through diatomaceous earth
8. temperatureafter cooling