SmI2-Mediated Reductive Cross-Coupling Reactions of alpha-Cyclopropyl Nitrones

[摘要]：Three new alpha-cyclopropyl nitrones have been synthesized as mechanistic probes for reductive cross-coupling reactions of nitrones. The alpha-cyclopropylcarbinyl radical intermediate formed by single electron transfer from SmI2 to these nitrones is not prone to ring opening, due to a unique stabilization by the vicinal N-O-Sm system. Consequently, beta-cyclopropyl hydroxylamines could be prepared in high yield from alpha-cyclopropyl nitrones.

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