Catalytic, Enantioselective <i>Syn</i>-Oxyamination of Alkenes
作者:Emily M. Mumford、Brett N. Hemric、Scott E. Denmark
DOI:10.1021/jacs.1c06750
日期:2021.8.25
2-oxyamination of alkenes using selenium(II/IV) catalysis with a chiral diselenide catalyst is reported. This method uses N-tosylamides to generate oxazoline products that are useful both as protected 1,2-amino alcohol motifs and as chiral ligands. The reaction proceeds in good yields with excellent enantio- and diastereoselectivity for a variety of alkenes and pendant functional groups such as sulfonamides
Straightforward Route! [RuCl2(p‐cymene)]2 promoted amide‐directed hydroarylation of aldimines in the presence of a catalytic amount of base gives the corresponding isoindolinone derivatives. A variety of amides and saldimines participated in the present Ru‐catalyzed reaction to furnish the corresponding isoindolinones in moderate to high yield. A variety of amides and aldimines participated in the
Practical copper(i)-catalysed amidation of aldehydes
作者:Joyce Wei Wei Chang、Thi My Uyen Ton、Stefani Tania、Paul C. Taylor、Philip Wai Hong Chan
DOI:10.1039/b918588g
日期:——
The direct synthesis of amides by insertion into the C-H bond of aldehydes is shown to be a practical procedure through application of cheap, readily available catalysts generated in situ from copper(i) halides and pyridine.
Efficient synthesis of carbon-11 labelled acylsulfonamides using [<sup>11</sup>C]CO carbonylation chemistry
作者:Berend van der Wildt、Bin Shen、Frederick T. Chin
DOI:10.1039/c8cc09661a
日期:——
Herein, a novel method for carbon-11 labeling of acyl sulfonamides by a one-step insertive [11C]CO carbonylative cross-coupling reaction between aryl halides and sulfonamides is presented. Various model compounds as well as drug molecules LY573636 (tasisulam) and ABT-199 were obtained in excellent yields. This method provides a valuable and widely applicable contribution to the continuously expanding
from aldehydes by an iron-catalyzed nitreneinsertionreaction has been developed. Both aryl and aliphatic aldehydes can directly afford the corresponding amides with an iron(II)-terpyridine (tpy) complex formed in situ as catalyst, and PhI=NTs as nitrogen source under mild reaction conditions. An ESI-MS study revealed the formation of [Fe(tpy) 2 (NTs)] 2+ as a reaction intermediate.