1,3-双極子と金属イオンとの相互作用-1,3-双極付加環化反応の立体・レギオ制御
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This review focuses on our own attempts of metal ion-assisted stereo- and regiocontrol of 1, 3-dipolar cycloaddition reactions : <I>N</I>-Metalated azomethine ylides, or metal enolates, of alkylideneamino nitriles and esters undergo endo-selective cycloadditions to α, β-unsaturated carbonyl acceptors to give 1-pyrrolines and pyrrolidines. Magnesium allylic alkoxides are highly reactive in nitrile oxide cycloadditions which are exclusively <I>syn</I>-selective and regioselective. Equally fruitful are nitrone cycloadditions to allylic alkoxides and Lewis acidcatalyzed nitrone reactions with allylic alcohols and enones.
- 社団法人 有機合成化学協会の論文
- 1995-02-01
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- 1,3-双極子と金属イオンとの相互作用-1,3-双極付加環化反応の立体・レギオ制御