Decarboxylative Radical Azidation Using MPDOC and MMDOC Esters
作者:Erich Nyfeler、Philippe Renaud
DOI:10.1021/ol702832x
日期:2008.3.1
An efficient radical-mediated decarboxylative azidation of aliphatic carboxylic acids has been developed. The success of this transformation hinges on the use of a new type of thiohydroxamate esters (MPDOC esters). These esters are more stable than the classical Barton esters and less prone to rearrange under radical conditions. In the case of alpha-alkoxy and alpha-amino acids, optimal results are obtained with the even more stable MMDOC esters developed recently by Kim.
Anti-Markovnikov Hydroazidation of Activated Olefins via Organic Photoredox Catalysis
作者:Nicholas P. R. Onuska、Megan E. Schutzbach-Horton、José L. Rosario Collazo、David. A. Nicewicz
DOI:10.1055/s-0039-1690691
日期:2020.1
bioactive and medicinally relevant molecules. Historically, the formal hydroazidation of simple activatedolefins and styrenes has proven difficult due to the inherent propensity of these compounds to oligomerize. Herein is disclosed a method for the anti-Markovnikov hydroazidation of activatedolefins, catalyzed by an organic acridinium salt under irradiation from blue LEDs. This method is applicable