Cyclic Iodine Reagents Enable Allylic Alcohols for Alkyl Boronate Addition/Rearrangement by Photoredox Catalysis
作者:Mingshang Liu、Hanchu Huang、Yiyun Chen
DOI:10.1002/cjoc.201800461
日期:2018.12
iodine(III) reagents enable the synthesis of cyclopentanones, cyclohexanones, and dihydrofuranones bearing α‐quaternary centers by photoredox catalysis. The reaction proceeds by the formation of the novel cyclic iodine(III) reagent‐allylic alcohol complex, which enables the first alkyl boronate addition and semi‐pinacol rearrangement of allylic alcohols with dual alcohol and olefin activation. The reaction
Modular synthesis of α-arylated carboxylic acids, esters and amides <i>via</i> photocatalyzed triple C–F bond cleavage of methyltrifluorides
作者:Sifan Li、Paul W. Davies、Wei Shu
DOI:10.1039/d2sc01905a
日期:——
operationally simple strategy features a unified access to functionally diverse α-arylated carboxylic acids, esters, and primary, secondary, and tertiary amides through backbone assembly from simple starting materials enabled by consecutive C–F bond functionalization at roomtemperature. Preliminary mechanistic investigations reveal that the reaction operates through a radical-triggered three-step cascade