本文对Hckel—Mbius芳香过渡态理论在周环反应中的应用作了较系统的讨论。提出了反位相重选数概念。克服了“前线轨道理论”和“能级相关理论”在缺乏对称元素的周环反应立体选择性所遇到的困难。认为周环反应是经历了一个环状过渡态,并且反应能否进行,取决于过渡状态的芳香性。 In this paper, the application of Hckel-Mbius aromatic transition state theory in the cycle reaction is discussed in more detail. Proposed the concept of inverse phase reselection number. Overcomes the difficulties encountered in the frontal orbital theory and the theory of energy level in the stereospecific reaction of the pericyclic reaction which lacks symmetry elements. It is considered that the pericyclic reaction undergoes a cyclic transition state, and whether the reaction can proceed depends on the aromaticity of the transitional state.