Palladium-Catalyzed Decarboxylative Carbonylative Transformation of Benzyl Aryl Carbonates: Direct Synthesis of Aryl 2-Arylacetates
作者:Jian-Xing Xu、Xiao-Feng Wu
DOI:10.1021/acs.orglett.8b02631
日期:2018.9.21
A procedure on palladium-catalyzed decarboxylative alkoxycarbonylation of carbonates for the synthesis of aryl 2-arylacetates has been developed. A broad range of aryl 2-arylacetates were obtained in good yields under mild conditions under a carbon monoxide atmosphere. Interestingly, other alcohols can be added as nucleophiles as well, and the corresponding esters were also obtained in good yields
Solvent- and transition metal-free amide synthesis from phenyl esters and aryl amines
作者:Sergey A. Rzhevskiy、Alexandra A. Ageshina、Gleb A. Chesnokov、Pavel S. Gribanov、Maxim A. Topchiy、Mikhail S. Nechaev、Andrey F. Asachenko
DOI:10.1039/c8ra10040c
日期:——
A general, economical, and environmentally friendly method of amide synthesis from phenyl esters and arylamines was developed. This new method has significant advantages compared to previously reported palladium-catalyzed approaches. The reaction is performed transition metal- and solvent-free, using a cheap and environmentally benign base, NaH. This approach enabled us to obtain target amides in
开发了一种由苯酯和芳基胺合成酰胺的通用、经济和环保的方法。与先前报道的钯催化方法相比,这种新方法具有显着优势。该反应在无过渡金属和无溶剂的情况下使用廉价且对环境无害的碱 NaH 进行。这种方法使我们能够以高产率和高原子经济性获得目标酰胺。
Modular Synthesis of Arylacetic Acid Esters, Thioesters, and Amides from Aryl Ethers via Rh(II)-Catalyzed Diazo Arylation
作者:Daniel Best、Mickaël Jean、Pierre van de Weghe
DOI:10.1021/acs.joc.6b01426
日期:2016.9.2
One-pot formation of arylacetic acid esters, thioesters, and amides via Rh(II)-catalyzed arylation of a Meldrum’s acid-derived diazo reagent with electron-rich arenes is described. The methodology was used to efficiently synthesize an anticancer compound.
Sulfoximidations of Benzylic C−H bonds by Photocatalysis
作者:Han Wang、Duo Zhang、Carsten Bolm
DOI:10.1002/anie.201801660
日期:2018.5.14
An efficient photocatalytic functionalization of compounds with benzylic C−Hbonds by sulfoximidation in visible light is described. The mild reaction conditions allow the use of a broad array of substrates, including diarylmethane, alkyl arenes, arylacetonitrile, 2‐arylacetate, and alkynyl aryl methanes. The sulfoximidation process is highly chemoselective and leads to the corresponding sulfoximines
Rhodium-Catalyzed Oxygenative Addition to Terminal Alkynes for the Synthesis of Esters, Amides, and Carboxylic Acids
作者:Insu Kim、Chulbom Lee
DOI:10.1002/anie.201303669
日期:2013.9.16
A gem of a couple: The title reaction of terminalalkynes with O and N nucleophiles proceeds in the presence of [Rh(cod)Cl}2], P(4‐FC6H4)3, and 4‐picoline N‐oxide. Alcohols, amines, and water add to the terminalalkynes to give esters, amides, and carboxylic acids, respectively. The reaction involves formation of a rhodium vinylidene, oxidation to a ketene by oxygen transfer, and nucleophilic addition
一对夫妇的宝石:与O和N亲核试剂在[的Rh(COD)氯}存在所得末端炔烃的标题反应2 ],P(4-FC 6 H ^ 4)3,和4-甲基吡啶ñ -氧化物。醇,胺和水加到末端炔烃中,分别得到酯,酰胺和羧酸。该反应包括形成亚乙烯基铑,通过氧转移氧化成烯酮,以及亲核加成。