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Université de Fribourg

Regioselective oxidative ring opening of cyclopropyl silyl ethers: a quantum chemical study

Rinderhagen, Heiko ; Mattay, Jochen ; Nussbaum, Rafael ; Bally, Thomas

In: Chemistry, a European Journal, 2010, vol. 16, no. 24, p. 7121–7124

In contrast to the structurally and configurationally stable alkyl- or aryl-substituted cyclopropyl radical cations, cyclopropyl silyl ethers undergo spontaneous ring opening upon oxidation whereby the endocyclic C-C(O-TMS) bond is cleaved with remarkable selectivity. DFT calculations on 1-trimethylsilyloxybicyclo[4.1.0]heptane show that this selectivity arises from the topology of the potential...