ChemInform Abstract: Efficient Synthesis of Eight‐Membered Nitrogen Heterocycles from O‐Propargylic Oximes by Rhodium‐Catalyzed Cascade Reactions.

Nakamura, Itaru; Sato, Yoshinori; Takeda, Keisuke; Terada, Masahiro

doi:10.1002/chin.201507250

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Reaction Of Oximes1

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2019

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“…Optically active oximes undergo the reaction with good levels of chirality transfer (eq 29). 105 Five-membered cyclic nitrones are prepared simply by hydroamination of alkenyl ketoximes mediated by inorganic base, K 3 PO 4 (eq 30). 106 Various five-menbered nitrones can be prepared also from allenyl oximes upon treatment of 2,2dimethylpentane-3,4-dienal oxime with aqueous KOH or with aqueous NH 3 (eq 31).…”

Section: Reaction Of Oximesmentioning

confidence: 99%

Synthesis and Transformations of Nitrones for Organic Synthesis

2019

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Nitrones are important compounds and are highly useful in many aspects. The first part describes the methods for synthesis of nitrones, which are useful and environmentally friendly. Catalytic oxidations, condensations, and other useful reactions are described. The nitrones thus obtained are key intermediates for the synthesis of biologically important nitrogen compounds. The second part describes the fundamental transformations of nitrones, which will provide the strategies and means for the construction of nitrogen compounds. The reactions with nucleophiles or radicals, C–H functionalization, and various addition reactions are described. The last reactions are particularly important for highly selective carboncarbon bond formations. 1,3-Dipolar cycloaddition reactions are excluded because the size of the review is limited and excellent reviews have been published in Chemical Reviews.

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Section: Reaction Of Oximesmentioning

confidence: 99%