Catalytic Asymmetric Homologation of 4‐Substituted Cyclohexanones with CF
<sub>3</sub>
CHN
<sub>2</sub>
: Enantioselective Synthesis of α
<i>‐</i>
Trifluoromethyl Cycloheptanones
作者:Shu‐Sen Li、Shuo Sun、Jianbo Wang
DOI:10.1002/anie.202115098
日期:2022.2
reaction of cyclic ketones with CF3CHN2 as the trifluoromethylation reagent. This reaction could be applied to construct silicon-stereogenic centers with moderate diastereoselectivities and high enantioselectivities.
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。
Synthesis of Trifluoroethyl-Substituted Ketones from Aldehydes and Cyclohexanones
作者:Bill Morandi、Erick M. Carreira
DOI:10.1002/anie.201103526
日期:2011.9.19
A trifluoromethylated symphony! A new transformation involving trifluoromethyl diazomethane generated in situ has been developed that allows direct access to trifluoroethyl ketone derivatives from aldehyde and cyclohexanone compounds (see scheme).
Macrocyclic pyrimidine compounds, compositions comprising such compounds, methods for making the compounds, and methods of treating and preventing the progression of diseases, conditions, and disorders using such compounds and compositions are described herein.
[reaction: see text] The radical trifluoromethylation of ketonesilylenolethers gave alpha-CF(3) ketones in good yields with wide scope of the ketonic substrates including acyclic ketones and cyclopentanone. The use of dialkylzinc to activate the silylenolethers is the key to the efficient radical trifluoromethylation.