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.