نتایج جستجو برای: hypervalent iodine

تعداد نتایج: 22019  

Journal: :Current Opinion in Electrochemistry 2022

The “ex-cell” approach to organic electrosynthesis has enabled important progression be made in numerous systems. Separating out the electrochemical step from subsequent chemical means that substrate scopes can expanded and a broader scope of reagents are more easily prepared. Moieties included otherwise readily undergo single-electron transfer redox events at electrode surface. We detail sever...

2016
Gergely L Tolnai Jonathan P Brand Jerome Waser

The selective functionalization of peptides containing only natural amino acids is important for the modification of biomolecules. In particular, the installation of an alkyne as a useful handle for bioconjugation is highly attractive, but the use of a carbon linker is usually required. Herein, we report the gold-catalyzed direct alkynylation of tryptophan in peptides using the hypervalent iodi...

Journal: :Organic letters 2015
Maria Victoria Vita Paola Caramenti Jerome Waser

Azides and nitriles are important building blocks for the synthesis of nitrogen-containing bioactive compounds. The first example of enantioselective palladium-catalyzed decarboxylative allylation of α-azido and cyano β-ketoesters is reported. Indanone derivatives were obtained in 50-88% yield/77-97% ee and 46-98% yield/78-93% ee for azide and nitrile substituents, respectively. The required st...

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