Chemo- and Site-Selective Alkyl and Aryl Azide Reductions with Heterogeneous Nanoparticle Catalysts
作者:Venkatareddy Udumula、S. Hadi Nazari、Scott R. Burt、Madher N. Alfindee、David J. Michaelis
DOI:10.1021/acscatal.6b01217
日期:2016.7.1
to generating new leads for drug discovery. Herein, we show that heterogeneous nanoparticle catalysts enable site-selective monoreduction of polyazide substrates for the generation of aminoglycoside antibiotic derivatives. The nanoparticle catalysts are highly chemoselective for reduction of alkyl and aryl azides under mild conditions and in the presence of a variety of easily reduced functional groups
Base-Induced Radical Carboamination of Nonactivated Alkenes with Aryldiazonium Salts
作者:Stephanie Kindt、Karina Wicht、Markus R. Heinrich
DOI:10.1021/acs.orglett.5b03143
日期:2015.12.18
transition-metal-free version of the Meerweinarylation has been developed. The key feature of this carboamination-type reaction is the slow base-controlled generation of arylradicalsfrom aryldiazonium tetrafluoroborates, so that a sufficient quantity of diazonium ions remains to enable efficient trapping of the alkyl radical adduct resulting fromarylradical addition to the alkene. Under strongly
[EN] NEW CLASS OF GAMMA DELTA T CELLS ACTIVATORS AND USE THEREOF<br/>[FR] NOUVELLE CLASSE D'ACTIVATEURS DE LYMPHOCYTES T GAMMA-DELTA ET LEUR UTILISATION