Silver-Catalyzed Radical Fluorination of Alkylboronates in Aqueous Solution
摘要:
We report herein an efficient and general method for the deboronofluorination of alkylboronates. Thus, with the catalysis of AgNO3, the reactions of various alkylboronic acids or their pinacol esters with Selectfluor reagent in acidic aqueous solution afforded the corresponding alkyl fluorides under mild conditions. A broad substrate scope and wide functional group compatibility were observed. A radical mechanism is proposed for this site-specific fluorination.
Copper-Promoted Trifluoromethylation of Primary and Secondary Alkylboronic Acids
作者:Jun Xu、Bin Xiao、Chuan-Qi Xie、Dong-Fen Luo、Lei Liu、Yao Fu
DOI:10.1002/anie.201206681
日期:2012.12.7
New couple: The Cu‐promoted trifluoromethylation of primary and secondaryalkylboronicacids with TMSCF3 extends the scope of transition‐metal‐catalyzed trifluoromethylation reactions to sp3‐hybridized carbon centers. It also represents one of the first examples for Cu‐catalyzed CC cross‐coupling reactions of alkylboronicacid derivatives.