Hypervalent Iodine Reagents Enable C–H Alkynylation with Iminophenylacetic Acids via Alkoxyl Radicals
作者:Zhengyi Liu、Yue Pan、Peng Zou、Hanchu Huang、Yali Chen、Yiyun Chen
DOI:10.1021/acs.orglett.2c02210
日期:2022.8.19
δ-C–H alkynylation to synthesize various δ-alkynols from iminophenylacetic acids. The hypervalent iodine-coordinated benziodoxole-alkoxyl-iminophenylacetic acid complex was the key intermediate and was characterized by X-ray crystallography for the first time. δ-C–H alkynylation is compatible with sensitive functional groups, including azides, aldehydes, and free alcohols, for the synthesis of δ-alkynols
在这里,我们报告了 δ-C-H 炔基化以从亚氨基苯乙酸合成各种 δ-炔醇。高价碘配位的苯并氧唑-烷氧基-亚氨基苯乙酸络合物是关键中间体,首次通过X射线晶体学对其进行了表征。δ-C-H 炔基化与敏感官能团相容,包括叠氮化物、醛和游离醇,用于合成具有优异区域选择性的多种取代基的 δ-炔醇。该反应扩展到 δ-羟基烯烃和 δ-羟基腈的合成,δ-炔醇产物很容易衍生为其他有价值的双功能结构单元。