In order to confirm the existence of this dynamic effect, we used the quasi-classical molecular dynamic software PROGDYN to simulate the reaction when X=H and X=OMe, and investigated the dynamics effect through the shape of the trajectory. Due to limited computing power, we simplified the group complexed with cyclic amide O to dimethylamino lithium and the O complexing group of urea to lithium ion. The trajectory shapes of the two compounds are similar. We scheme a typical set to compare(Fig. ). It can be seen that when X=H, the system will stay at the dynamic intermediate for longer than X=OMe, and the other trajectories basically conform to this phenomenon. We believe that in this system with a gradual change in mechanism, the dynamics effect may be one of the reasons why the reaction constant is smaller than the classical stepwise or concerted reaction. However, since the real system is far more complicated than the model used for calculation, we still cannot assert that this is decisive, and only one possibility is proposed here. We will continue the research and look forward to further arguments and counterarguments.