Electrochemical Synthesis of Fluorinated Ketones from Enol Acetates and Sodium Perfluoroalkyl Sulfinates
作者:Vera A. Vil’、Valentina M. Merkulova、Alexey I. Ilovaisky、Stanislav A. Paveliev、Gennady I. Nikishin、Alexander O. Terent’ev
DOI:10.1021/acs.orglett.1c01643
日期:2021.7.2
fluorinated ketones fromenolacetates and RfSO2Na in an undivided cell under constant current conditions was developed. The electrosynthesis proceeded via perfluoroalkyl radical generation from sodium perfluoroalkyl sulfinate followed by addition to the enolacetate and transformation of the resulting C radical to a fluorinated ketone. The method is applicable to a wide range of enolacetates and results
开发了在恒流条件下在未分隔的电池中由烯醇乙酸酯和 R f SO 2 Na电化学合成氟化酮。电合成通过从全氟烷基亚磺酸钠产生全氟烷基自由基,然后加入烯醇乙酸酯并将所得 C 自由基转化为氟化酮来进行。该方法适用于范围广泛的烯醇乙酸酯,并以 20% 至 85% 的产率获得所需的产品。
Studies on organic fluorine compounds. XXX. Ring opening reaction of acetoxydifluorocyclopropanes with various nucleophiles.
Ring opening reactions of acetoxydifluorocyclopropanes with various nucleophiles were investigated. Alkaline hydrolysis of acetoxydifluorocyclopropane afforded the α, α-difluoro ketone, α-fluoro enone and, in the case of 4, α-fluoro-β-methoxy ketone (8), while reactions with CH3Li, Grignard reagent and LiAlH4 gave the corresponding fluoro allyl alcohol derivatives (15) exclusively, in good yields. The reaction of 3 with CH3MgI in the presence of CuBr afforded 2-fluoro-3-methylcyclotridecanone (21).
Electrochemical Radical Reactions of Enol Acetates and Free Alcohols Directly Access to α-Alkoxylated Carbonyl Compounds
作者:Fan Wu、Yu Guo、Zihao Ren、Zixuan Chen、Xiaoqin Liu、Chang Wang、Liangce Rong
DOI:10.1021/acs.joc.3c00635
日期:2023.7.7
The efficient intermolecular alkoxylation reactions of various enolacetates and different alcohols are developed in the electrochemical process for the first time. Enolacetatesderivedfrom either aromatic, alkyl, or alicyclic ketones, and abundant free alcohols directly used in this synthetic strategy, make this transformation very valuable in synthesis and application in the future.