An efficient in situ prepared superacid BF3–H2O promoted benzylation of arenes using benzyl alcohols and acetates achieves various diarylalkanes.
一种高效的原位制备的超强酸BF3-H2O促进的芳烃苄基化反应,使用苄醇和醋酸酯制备各种二芳基烷烃。
N‐heterocyclic carbene–palladium complexes for Suzuki–Miyaura coupling reaction with benzyl chloride and aromatic boronic acid leading to diarylmethanes
作者:Ming‐Tsz Chen、Wan‐Rong Wang、Yi‐Jun Li
DOI:10.1002/aoc.4912
日期:2019.6
A family of N‐heterocyclic carbene–palladium(II)–N,N‐dimethylbenzylamine complexes ((NHC)LPdCl2; L = N,N‐dimethylbenzylamine) were synthesized as well as characterized using single‐crystal X‐ray diffraction and spectroscopic data. These complexes exhibited higher catalytic activities for the Suzuki reaction of benzyl chlorides to afford diarylmethanes under milder conditions than other efficient (NHC)LPdCl2
合成了N-杂环卡宾-钯(II)-N,N-二甲基苄胺络合物((NHC)LPdCl 2 ; L = N,N-二甲基苄胺)并使用单晶X射线衍射和光谱进行了表征数据。与其他有效的(NHC)LPdCl 2络合物相比,这些络合物在温和的条件下对苄基氯的Suzuki反应表现出更高的催化活性,从而生成二芳基甲烷。使用最佳条件,可以以中等至高收率获得预期的偶联产物。所有反应均在空气中进行,所有起始原料均不经纯化直接使用。
Palladium-Catalyzed Desulfitative Cross-Coupling Reaction of Sodium Sulfinates with Benzyl Chlorides
作者:Feng Zhao、Qi Tan、Fuhong Xiao、Shufeng Zhang、Guo-Jun Deng
DOI:10.1021/ol400295z
日期:2013.4.5
A palladium-catalyzed approach for the synthesis of diarylmethanes from sodium sulfinates and benzyl chlorides is described. Various aromatic sodium sulfinates were used as aryl sources via extrusion of SO2 and gave the diarylmethanes in moderate to good yields.
A Study of <i>N</i>-Nitrosoamide-Mediated Friedel−Crafts Type Benzylation of Benzene−Toluene and Benzene−Anisole<sup>1</sup><sup>a</sup>
作者:Ron W. Darbeau、Emil H. White
DOI:10.1021/jo9916378
日期:2000.2.1
deuterium rearrangements (or coupled benzyl rearrangements) in the arenium ion intermediate. Kinetic isotope effects were not detected. The methyl substituent on toluene appears to affect intermolecular selectivity (k(T)/k(B)) and intramolecular selectivity (o, m, p distribution) to similar degrees. A mechanism is proposed in which both selectivities are determined by activation energy differences in
Synthesis of diarylmethane derivatives from Stille cross-coupling reactions of benzylic halides
作者:Tatiana Z. Nichele、Adriano L. Monteiro
DOI:10.1016/j.tetlet.2007.08.072
日期:2007.10
catalyst precursor prepared in situ from palladium acetate and a phosphine ligand was used for the Stille cross-couplingreaction of benzylic bromides and chlorides with aryltributyltin analogues. The reactions were performed at 80 °C using dppf as ligand in the presence of KF, or more conveniently using PPh3 in the absence of base, furnishing diarylmethane derivatives in high yields (86–99%). Using