To prevent excessively intense reactions or excessively long reaction
times under the boundary conditions of reaction time, the upper and
lower limits of superior reaction time are set at 0.1h and 1.5h
respectively. As for the boundary conditions of reaction temperature,
the temperatures near the room temperature are considered as superior
reaction temperatures, while temperatures exceeding the boiling point of
water and temperatures requiring artificial cooling are considered as
inferior reaction ones.
According to the distribution of reaction yields recorded in the ORD
database, it can be observed that most of the reaction yield are
distributed between 90% and 100% (Fig. 3) , with only a small
portion distributed below 50%. Therefore, we set the upper and lower
boundaries for yield as 90% and 50% respectively to enhance
differentiation between variations. Furthermore, reactions with notably
low yields and reasonably moderate reaction times are also classified as
inferior reactions.