Ene reactions with α‐chloronitroso compounds: Asymmetric synthesis of N‐allylhydroxylamines

Abstract
The α‐chloronitroso mannose derivative 1 undergoes ene reactions with alkenes 2 to yield nitrone hydrochlorides 3 which may be hydrolyzed to allylic hydroxylamines. The enophilic reactivity of 1 is much higher than that of other α‐chloronitroso compounds. The reaction seems to be highly diastereoselective.

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