[EN] HISTONE DEACETYLASE INHIBITORS BASED ON ALPHACHALCOGENMETHYLCARBONYL COMPOUNDS [FR] INHIBITEURS D'HISTONE DESACETYLASE BASES SUR DES COMPOSES ALPHA-CHALCOGENMETHYLCARBONYLE
Visible Light-Induced Methoxycarbonyldifluoromethylation of Trimethylsilyl Enol Ethers and Allyltrimethylsilanes with FSO<sub>2</sub>
CF<sub>2</sub>
CO<sub>2</sub>
Me
作者:Wei Yu、Yao Ouyang、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1002/cjoc.201800318
日期:2018.11
omethylation of trimethylsilyl enol ethers with FSO2CF2CO2Me in the presence of fac‐Ir(ppy)3 was developed. This reaction provided a practical strategy for the construction of various α‐CF2CO2R aromatic ketones, which are difficult to access by other methods. Furthermore, a series of methoxycarbonyldifluoromethylated allylic compounds could also be obtained from allyltrimethylsilanes using the same
在fac -Ir(ppy)3存在下,用FSO 2 CF 2 CO 2 Me对三甲基甲硅烷基烯醇醚进行了光催化甲氧基羰基二氟甲基化反应。该反应的各种α-CF的构造提供了一种实用的策略2 CO 2 - [R芳族酮,这是难以通过其它方法获得。此外,也可以使用相同策略从烯丙基三甲基硅烷获得一系列甲氧基羰基二氟甲基化的烯丙基化合物。所得的含CF 2 CO 2 R的产品是有用的组成部分,在药物化学和材料科学中具有潜在的价值。
Generation of<i>α</i>-Nitroalkyl Radicals by Oxidation of Nitronate Anions with Cerium(IV) Ammonium Nitrate and Their Addition Reaction to Electron-Rich Olefins
作者:Noriyoshi Arai、Koichi Narasaka
DOI:10.1246/cl.1995.987
日期:1995.11
α-Nitroalkyl radicals are generated by oxidation of nitronate anions with cerium(IV) ammonium nitrate. When the reactions are carried out in the presence of electron-richolefins, such as silyl eno...
Oxidative Generation of 1-Nitroalkyl Radicals and Their Addition Reaction to Olefins
作者:Noriyoshi Arai、Koichi Narasaka
DOI:10.1246/bcsj.70.2525
日期:1997.10
1-Nitroalkyl radicals are generated by oxidation of potassium salt of 1-aci-nitroalkanes with ammonium hexanitratocerate(IV). When the oxidation is carried out in the presence of electron-rich olefins, such as silyl enol ethers, intermolecular addition of the radicals onto the olefins proceeds to afford β-nitro ketones, which are further converted to α,β-unsaturated ketones in high yield. Stereoselective
作者:Shlomy Arava、Jayprakash N. Kumar、Shimon Maksymenko、Mark A. Iron、Keshaba N. Parida、Peter Fristrup、Alex M. Szpilman
DOI:10.1002/anie.201610274
日期:2017.3.1
Enolonium species/iodo(III)enolates of carbonyl compounds have been suggested to be intermediates in a wide variety of hypervalent iodine induced chemical transformations of ketones, including α‐C−O, α‐C−N, α‐C−C, and α‐carbon–halide bond formation, but they have never been characterized. We report that these elusive umpoled enolates may be made as discrete species that are stable for several minutes
Treatment of aliphatic carbonylcompounds with trimethylsilyl chloride with Mg turning for Grignard reaction without any pre-treatment in N,N-dimethylformamide at room temperature brought about highly facile, effective and stereoselective coupling to give the corresponding silylenolethers in good yields.