Alkylation of Allyl/Alkenyl Sulfones by Deoxygenation of Alkoxyl Radicals
作者:Jia-Bin Han、Ao Guo、Xiang-Ying Tang
DOI:10.1002/chem.201806138
日期:2019.2.26
challenging deoxygenation of alkoxyl radicals from readily accessible alcohol derivatives was developed, affording facile synthesis of functionalized alkenes with good functional group tolerance under mild reaction conditions. Because alkoxyl radicals can easily undergo β‐fragmentations or hydrogen abstractions, this new strategy for deoxygenation of alkoxyl radicals is highly valuable. Moreover, mechanistic
Organocatalytic synthesis of β-enaminyl radicals as single-electron donors for phenyliodine(<scp>iii</scp>) dicarboxylates: direct one-pot alkylation–aminoxidation of styrenes
derivatives was achieved using in situ-generated alkyl and N-oxyl radicals. The corresponding O-alkylated hydroxylamine derivatives were obtained in moderate to good yields. The reaction features the generation of the alkyl radicals fromphenyliodine(III) dicarboxylates via an organocatalytic process, the use of phenyliodine(III) dicarboxylates as the source of the alkyl radicals and oxidants for the generation
使用原位生成的烷基和N -氧基自由基实现了苯乙烯衍生物的直接一锅烷基化-氨基氧化。相应的O-烷基化羟胺衍生物以中等至良好的收率获得。该反应的特点是通过有机催化过程从苯碘( III )二羧酸盐生成烷基自由基,使用苯碘( III )二羧酸盐作为烷基源和氧化剂产生N-氧基自由基,以及第一代通过HAT 过程生成 β-烯胺基自由基及其作为单电子供体的用途。
Galagher, Peter T.; Hunt, James C. A.; Lightfoot, Andrew P., Journal of the Chemical Society. Perkin transactions I, 1997, # 17, p. 2633 - 2637
作者:Galagher, Peter T.、Hunt, James C. A.、Lightfoot, Andrew P.、Moody, Christopher J.