Nickel-Catalyzed Reversible Functional Group Metathesis between Aryl Nitriles and Aryl Thioethers
作者:Tristan Delcaillau、Philip Boehm、Bill Morandi
DOI:10.1021/jacs.1c00529
日期:2021.3.17
We describe a new functional group metathesis between aryl nitriles and aryl thioethers. The catalytic system nickel/dcype is essential to achieve this fully reversible transformation in good to excellent yields. Furthermore, the cyanide- and thiol-free reaction shows high functional group tolerance and great efficiency for the late-stage derivatization of commercial molecules. Finally, synthetic applications
Palladium-Catalyzed Aminocarbonylation Reaction to Access 1,3,4-Oxadiazoles using Chloroform as the Carbon Monoxide Source
作者:Zhengyi Li、Liang Wang
DOI:10.1002/adsc.201500778
日期:2015.11.16
A palladium-catalyzedaminocarbonylation reaction of aryl halides with chloroform and tetrazoles has been developed, where chloroform was employed as the carbon monoxide (CO) source in the presence of cesium hydroxide. The in situ generated N-acylated tetrazoles were unstable and easily decomposed to afford 2,5-disubstituted 1,3,4-oxadiazoles. A wide range of tetrazoles and aryl halides reacted smoothly
One-Pot Synthesis of 2,5-Diaryl 1,3,4-Oxadiazoles via Di-<i>tert</i>-butyl Peroxide Promoted<i>N</i>-Acylation of Aryl Tetrazoles with Aldehydes
作者:Liang Wang、Jing Cao、Qun Chen、Mingyang He
DOI:10.1021/acs.joc.5b00207
日期:2015.5.1
A metal- and base-free protocol for one-pot synthesis of 2,5-diaryl1,3,4-oxadiazoles via a radical-promoted cross-dehydrogenative coupling strategy was developed. This reaction involved the N-acylation of aryl tetrazoles with aryl aldehydes, followed by thermal rearrangement. A wide range of aryl tetrazoles and aryl aldehydes survived the reaction conditions to deliver the corresponding products in
Organocatalytic Oxidative Amidation of Aldehydes with Tetrazoles to Construct 2,5-Diaryl 1,3,4-Oxadiazoles
作者:Jing Cao、Liang Wang
DOI:10.1002/cjoc.201500598
日期:2015.11
A practical and metal‐free oxidativeamidation of aldehydes with tetrazoles into 1,3,4‐oxadiazoles has been developed by employing tetrabutylammonium iodide (TBAI) as catalyst and tert‐butyl hydroperoxide (TBHP) as oxidant. A wide range of 2,5‐disubstituted 1,3,4‐oxadiazoles can be conveniently generated in moderate to good yields. Gram‐scale reaction was also realized in this catalytic system.