TS5-P1-1’A
In this reaction, the β -hydride elimination product monoketoneP1’ was not found. The electronic effect could account for this selectivity. As indicated in the given NBO charges of correspondingβ -hydride elimination transition states depicted in Figure 4, the strong attraction between Cβ and Hβ , and repulsion between Rh and Hβ restrain the β -hydride elimination jointly.