Mechanistic Insights into Thermal Stability Improvement of exo-Tetrahydrodicyclopentadiene by 1,2,3,4-Tetrahydroquinoline

We investigated the thermal stability of exo -tetrahydrodicyclopentadiene ( exo -THDCP, C 10 H 16 ) in the absence and presence of 1,2,3,4-tetrahydroquinoline (THQ), which acts as a hydrogen donor (H-donor). It was found that conversion of exo -THDCP was faster at the higher temperature. The increase in the rate of <C 10 product formation with increasing temperature was higher than that of ≥C 10 . Conversion of exo -THDCP was found to be slowed in the presence of THQ. The THQ-induced decrease in the conversion of exo -THDCP was smaller at the higher temperature. In addition, the THQ-induced decrease in the rate of