Table 5.

Relative B3LYP/6-31G^* energies of the intermediates C for R=Ph and R=TMS.

Entry	CA	CB	CC	CA	CB	CC
R	TMS	TMS	TMS	Ph	Ph	Ph
ΔE [kcal mol−1]	0	−2.4	−2.2	0	−1.4	−1.5