Visible-Light Photoredox-Catalyzed Hydroalkoxymethylation of Activated Alkenes Using α-Silyl Ethers as Alkoxymethyl Radical Equivalents
作者:Nilufa Khatun、Myeong Jun Kim、Sang Kook Woo
DOI:10.1021/acs.orglett.8b02721
日期:2018.10.5
electron oxidation (SET) of α-TMS-substituted ethers, followed by subsequent conjugate addition to activated alkenes. Various functional groups were tolerated both under mild metal and metal-free conditions to provide good to excellent yields. Furthermore, the addition products were transformed to valuable synthetic building blocks, such as carboxylic acids, γ-butyrolactones, and complex aryl alkyl ethers
提出了一种新型的基于中性硅的无痕活化基团(TAG),用于可见光的光氧化还原催化的烯烃的加氢烷氧基甲基化。该反应涉及通过α-TMS-取代的醚的单电子氧化(SET)原位产生的烷氧基甲基自由基,随后将共轭物加成至活化的烯烃中。在温和的金属和不含金属的条件下都可以耐受各种官能团,从而提供了良好的优异收率。此外,将加成产物转化为有价值的合成构件,例如羧酸,γ-丁内酯和复杂的芳基烷基醚。