Table 1. Variation of the silyl alkyl group³⁴ .

^aYield based on ¹H NMR peak integration relative to methyl-4-nitro-benzoate.

^bIsolated yields (average of 2 trials).

^c1 mol% Rh₂(esp)₂.

^d2 mol% Cp*RuCl(cod).