Reaction of vinyl acetate with tricyclo[5.2.1 2.5 .1.0 2.6 ]deca-3,8-diene in the presence of nano-TiO 2 (20 nm) catalyst was studied. 8-Acetoxytetracyclo[4.4.1 2.5 .1 7.10 .0 1.6 ]dodec-3-ene was obtained in 88.5% yield. Addition of saturated monobasic acids C 1 -C 5 to the obtained unsaturated monoester in the presence of the boron trifluoride etherate catalyst was investigated. Corresponding diesters were obtained in 68.1-93.0% yield. They can be used as the additives to synthetic oils and as components of perfumes.Diesters of polycyclic diols and hydroxy acids are known to be successfully used as the plasticizers of polymer materials significantly improving the physicochemical properties [1].Diesters of saturated asids are also used to improve the quality of mineral oils and their operating properties [2].