Ethylene → 5,6-Dihydrodicyclopentadiene Norbornene Ethylene

Participants

Reaction Conditions

Reaction Steps

5,6-dihydrodicyclopentadiene (2.7 g, 20 mmol), norbornene (1.9 g, 20 mmol) and magnetic bars were added into a polymerization reactor in a nitrogen atmosphere, after which toluene was added thereto so as to obtain a total amount of 28 ml. This polymerization reactor was heated to 70° C. with stirring. A catalyst (0.7 mg, 2 μmol) represented by Formula 6, [Ph3C]+[B(C6F5)4]− (7.4 mg, 8 μmol), and triisobutylaluminum (160 mg, 800 μmol) were mixed with 2.0 in of toluene in a dry box, after which the resulting mixture was added into the reactor using a syringe while being stirred at 70° C., and also ethylene gas was fed thereto at a pressure of 40 psig. After 7 min, the ethylene pressure was released, and the reactor was opened, and 30 ml of methanol was added and thus the reaction product precipitated. Filtration was performed, thus obtaining a powder. The powder was decompressed to a vacuum at 100° C., so that the remaining solvent was removed from the precipitate, thereby obtaining 1.8 g of a polymer material.

Provenance & Evidence