Ligand-free Cu(<scp>ii</scp>)-catalyzed aerobic etherification of aryl halides with silanes: an experimental and theoretical approach
作者:Muhammad Naeem Ahmed、Khalil Ahmad、Khawaja Ansar Yasin、Tayyaba Farooq、Bilal Ahmad Khan、Soumendra K. Roy
DOI:10.1039/c9nj01777a
日期:——
remained a focus of interest. In contrast to the conventional/traditional methods of etherification, herein, we have reported a more efficientmethod, which is better yielding and more general in application. The etherification of aryl halides by alkoxy/phenoxy silanes was catalyzed by copper acetate in the presence of cesium carbonate and oxygen in DMF at 145 °C. All the as-synthesized compounds were
Desilylation of<i>tert</i>-Butyldimethylsilyl Ethers of Phenols
作者:Achintya K. Sinhababu、Masami Kawase、Ronald T. Borchardt
DOI:10.1055/s-1988-27681
日期:——
Treatment of tert-butyldimethylsilyl ethers of phenols and diphenols with potassium fluoride in the presence of catalytic amounts of hydrobromic acid in dimethylformamide generates the corresponding phenols or diphenols in high yields.
primary and secondary alcohols and phenols can be converted efficiently to their corresponding TBDMS ethers using TBDMCS/imidazole undersolvent-freeconditions. Elimination of DMF, accompanied with an easy non-aqueous work-up and a high rate enhancement of the reaction are worthy to be mentioned for the presented method. The reactions show absolute chemoselectivity for the protection of primary in the