通过使用双功能试剂 Me 2 (CH 2 Cl)SiCF 3实现了前所未有的串联三氟甲基硅烷化/分子内 S N 2 取代序列,从而可以高效构建已知方法难以获得的有价值的三氟甲基化硅氧烷环己烷。开发不对称变体的初步尝试表明,使用辛可宁衍生的二聚 PTC 催化剂可以提供高达 92% 对映体过量的手性硅氧烷环己烷。
Facile Synthesis of γ‐Ketonitriles in Water via C(sp
<sup>2</sup>
)–H Activation of Aromatic Aldehydes over Cu@g‐C
<sub>3</sub>
N
<sub>4</sub>
under Visible‐Light
作者:Vijai K. Rai、Fooleswar Verma、Smita R. Bhardiya、Harendra Sheshma、Ankita Rai、Manorama Singh
DOI:10.1002/ejoc.202000945
日期:2020.9.30
Photocatalytic synthesis of γ‐ketonitriles using various aromaticaldehydes and acrylonitrile is disclosed. The reaction is catalyzed by Cu@g‐C3N4 in waterundervisible‐light reaction conditions at room‐temperature.
公开了使用各种芳族醛和丙烯腈光催化合成γ-乙腈。在室温下可见光反应条件下,Cu @ g‐C 3 N 4在水中催化该反应。
Copper-Catalyzed Decarboxylative Oxyalkylation of Alkynyl Carboxylic Acids: Synthesis of γ-Diketones and γ-Ketonitriles
作者:Yi Li、Jia-Qi Shang、Xiang-Xiang Wang、Wen-Jin Xia、Tao Yang、Yangchun Xin、Ya-Min Li
DOI:10.1021/acs.orglett.9b00520
日期:2019.4.5
A novel copper-catalyzed decarboxylative oxyalkylation of alkynyl carboxylic acids with ketones and alkylnitriles via direct C(sp3)–H bond functionalization to construct new C–C bonds and C–O double bonds was developed. This transformation is featured by wide functionalgroup compatibility and the use of readily available reagents, thus affording a general approach to γ-diketones and γ-ketonitriles
Stetter Reaction in Room Temperature Ionic Liquids and Application to the Synthesis of Haloperidol
作者:Siddam Anjaiah、Srivari Chandrasekhar、René Grée
DOI:10.1002/adsc.200404123
日期:2004.9
Imidazolium-type roomtemperatureionic liquids (RTILs) have been used for the Stetter reaction, affording the desired 1,4-dicarbonyl compounds in good yields. Thiazolium salts and Et3N are efficient catalysts for this reaction performed in ionic liquid. The possibility to recycle and reuse the solvent has been demonstrated, although it was not possible to recycle the thiazolium catalyst. This method
A Novel Ketonitrile Synthesis by Palladium-Catalyzed Carbonylative Coupling Reactions of Amides with Arylboronic Acids
作者:Wen-Peng Mai、Yang Liu、Hong-Dai Sui、Yong-Mei Xiao、Pu Mao、Kui Lu
DOI:10.1002/ejoc.201901396
日期:2019.12.31
A novel, efficient, and simple procedure to synthesize diverse ketonitriles by palladium‐catalyzed Suzuki coupling of amides through N–C cleavage has been developed. This procedure features mild conditions, a broad substrate scope, and easily prepared substrates, providing a simple and efficient access to a variety of ketonitriles.