| 摘要 |
PURPOSE:To obtain the subject compound in an industrially advantageous way by acyloxylating a conjugated diene compound by using a highly and sustainedly active catalyst carried on a solid carrier having special structure. CONSTITUTION:This unsaturated glycol diester is obtained by reaction between a conjugated diene (e.g. butadiene, isoprene), carboxylic acid (e.g. acetic acid, propionic acid, butyric acid) and molecular oxygen at 20-150 deg.C under a pressure of 5-100kg/cm<2> by using a catalyst (with both palladium and tellurium as active ingredients) carried on a solid carrier with the volume of the pores 5-50nm in radius accounting for >=80% (pref. >=90%) of the total volume of the pores 1.8-10000nm in radius. It is preferable that the specific surface area of the solid carrier be <200m<2>/g (esp. 30-190m<2>/g), the solid carrier being e.g. silica, alumina, titania, zeolite, silica-alumina. The level of the Pd in the catalyst stands at 0.5-10 (pref. 2-6)wt.% and the amount of the Te carried 0.15-0.5 gram atom per gram atom of the Pd. |
