Stereoselective Addition of N-Alkylhydroxylamines to α,β-Unsaturated Nitro Compounds

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N-Alkylhydroxylamines have been shown to undergo a stereospecific cis addition to 1-phenyl-2 -nitropropene compounds, whereas the corresponding O-alkylhydroxylamines give no diastereoselectivity. The concerted addition mechanism was provided to explain the difference.
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