Synthesis of Aryl Ethers from Aromatic Carboxylic Acids
作者:Lukas Gooßen、Sukalyan Bhadra、Wojciech Dzik
DOI:10.1055/s-0033-1339470
日期:——
meta-substituted carboxylates are converted into para-substituted alkoxyarenes and vice versa. The combined processes provide a convenient synthetic entry to the important class of aromatic ethers from widely available carboxylicacids. A silver/copper bimetallic catalyst system promotes the decarboxylative Chan–Evans–Lam alkoxylation of ortho-substituted aromatic carboxylate salts with tetraalkyl orthosilicates
Surfactant-mediated solvent-free dealkylative cleavage of ethers and esters and trans-alkylation under neutral conditions
作者:Apurba Bhattacharya、Nitin C. Patel、Tomas Vasques、Ritesh Tichkule、Gaurang Parmar、Jiejun Wu
DOI:10.1016/j.tetlet.2005.11.048
日期:2006.1
A simple, surfactant-mediated, one-pot, solvent-free dealkylative cleavage of aryl ethers and esters followed by subsequent optional trans-alkylation under essentially neutral conditions has been developed.
Synthesis of Aryl Ethers from Benzoates through Carboxylate-Directed CH-Activating Alkoxylation with Concomitant Protodecarboxylation
作者:Sukalyan Bhadra、Wojciech I. Dzik、Lukas J. Gooßen
DOI:10.1002/anie.201208755
日期:2013.3.4
copper/silver bimetallic catalyst system, aromatic carboxylate salts undergo ortho CH alkoxylation with concomitant loss of the carboxylate directing group in a protodecarboxylation step (see scheme, FG=functional group). This process provides a convenient synthetic access to the important class of aromatic ethersfrom widely available carboxylic acids.
The Zinc(II)-Catalyzed Henkel Reaction of Dipotassium 1,8-Naphthalenedicarboxylate in a Dispersion Medium
作者:Koichi Fujishiro、Shuichi Mitamura
DOI:10.1246/bcsj.62.786
日期:1989.3
The Henkel reaction of dipotassium 1,8-naphthalenedicarboxylate in naphthalene as a dispersion medium gave dipotassium 2,6-naphthalenedicarboxylate (1) in a higher yield and with a better reproducibility than the reaction without a dispersion medium. Catalysts, particularly zinc catalysts, were examined in detail. The anion moiety of zinc catalysts affected the reaction, and the halide anion was effective
Arene Exchange in the Ruthenium–Naphthalene Complex [CpRu(C
<sub>10</sub>
H
<sub>8</sub>
)]
<sup>+</sup>
作者:Dmitry S. Perekalin、Eduard E. Karslyan、Pavel V. Petrovskii、Alexandra O. Borissova、Konstantin A. Lyssenko、Alexander R. Kudinov
DOI:10.1002/ejic.201100928
日期:2012.3
[B(3,5-(CF3)2C6H3)4]– < PF6– < BF4– < CF3SO3–. Acceptor or bulky substituents in the incoming arene slow down the exchange. Complexes with acceptor arenes C6H5COMe, C6H5COOH, and C6H4(COOH)2 were obtained by the exchange reaction in water. Complexes [CpRu(η6-cycloheptatriene)]+ and [CpRu(η6-cyclooctatetraene)]+ were obtained by irradiation of 1 with the corresponding cyclic polyenes. A similar reaction