N-heterocyclic carbene-catalysed pentafluorophenylation of aldehydes
作者:Guang-Fen Du、Fen Xing、Cheng-Zhi Gu、Bin Dai、Lin He
DOI:10.1039/c5ra05487g
日期:——
N-heterocyclic carbenes have been utilized as highly efficient organocatalysts to catalyse multifluorophenylation of aldehydes with fluorinated aryltrimethylsilanes to afford the corresponding adducts in 49–99% yields.
Copper-Bisphosphine-Initiated Pentafluorophenylation of Aldehydes and Ketones
作者:Hon Lam、Samantha Brogan、Neil Carter
DOI:10.1055/s-0029-1219159
日期:2010.3
In the presence of substoichiometric quantities of a copper-bisphosphine complex, a variety of aldehydes and reactive ketones undergo pentafluorophenylation using pentafluorophenyltrimethylsilane.
在次化学计量的铜-双磷配合物存在下,各种醛和活泼酮与五氟苯基-三甲基硅烷发生五氟苯基化反应。
Transition Metal Catalyst‐Free, Base‐Promoted 1,2‐Additions of Polyfluorophenylboronates to Aldehydes and Ketones
作者:Zhiqiang Liu、Goutam Kumar Kole、Yudha P. Budiman、Ya‐Ming Tian、Alexandra Friedrich、Xiaoling Luo、Stephen A. Westcott、Udo Radius、Todd B. Marder
DOI:10.1002/anie.202103686
日期:2021.7.19
A novel protocol for the transition metal-free 1,2-addition of polyfluoroaryl boronate esters to aldehydes and ketones is reported, which provides secondary alcohols, tertiary alcohols, and ketones. Control experiments and DFT calculations indicate that both the ortho-F substituents on the polyfluorophenyl boronates and the counterion K+ in the carbonate base are critical. The distinguishing features
报道了一种将多氟芳基硼酸酯与醛和酮进行无过渡金属 1,2-加成的新方案,可提供仲醇、叔醇和酮。对照实验和 DFT 计算表明,多氟苯基硼酸酯上的邻位 F 取代基和碳酸盐碱中的抗衡离子 K +都很关键。该方法的显着特点包括使用市售起始原料以及与多种羰基化合物进行广泛的反应,从而获得中等至优异的产率。在这一系列外消旋多氟芳基甲醇中,涉及 O−H⋅⋅⋅O 和 O−H⋅⋅⋅N 氢键以及芳烃-全氟芳烃相互作用的有趣结构特征也得到了解决。