Retro Claisen cleavage of α-nitrocycloalkanones using trimethylsilylmethylmagnesium chloride (Peterson reagent): Synthesis of functionalized β-keto-trimethylsilanes.
Beta-ketosilanes, bearing a nitro functionality, can be prepared by nucleophilic ring cleavage of alpha-nitrocycloalkanones with the Peterson reagent. This high yielding process shows considerable chemoselectivity but fails with large rings (C(n)>7). This unusual reactivity is tentatively explained considering the silicon beta effect.
ROSINI, GOFFREDO;BALLINI, ROBERTO;MAROTTA, EMANUELA, TETRAHEDRON, 45,(1989) N8, C. 5935-5942