Metal-free electrochemical [3 + 2] heteroannulation of anilines with pyridines enabled by dual C–H radical aminations
作者:Mu-Jia Luo、Xuan-Hui Ouyang、Yan-Ping Zhu、Yang Li、Jin-Heng Li
DOI:10.1039/d1gc02922c
日期:——
electrochemical intermolecular [3 + 2] heteroannulation of anilines with electron-deficient pyridines enabled by dual C–H radicalaminations for producing functionally diverse benzo[4,5]imidazo[1,2-a]pyridines is described. The site-selectivity of aminations of aryl C(sp2)–H bonds relies on the electronic effect of two reaction partners: each contributed two reactive sites (a C(sp2)–H bond and a nitrogen
Non-Acidic Free Fatty Acid Receptor 4 Agonists with Antidiabetic Activity
作者:Carlos M. G. Azevedo、Kenneth R. Watterson、Ed T. Wargent、Steffen V. F. Hansen、Brian D. Hudson、Małgorzata A. Kępczyńska、Julia Dunlop、Bharat Shimpukade、Elisabeth Christiansen、Graeme Milligan、Claire J. Stocker、Trond Ulven
DOI:10.1021/acs.jmedchem.6b00685
日期:2016.10.13
The free fatty acid receptor 4 (FFA4 or GPR120) has appeared as an interesting potential target for the treatment of metabolic disorders. At present, most FFA4 ligands are carboxylicacids that are assumed to mimic the endogenous long-chain fatty acid agonists. Here, we report preliminary structure–activity relationship studies of a previously disclosed nonacidic sulfonamide FFA4 agonist. Mutagenesis
visible-light-induced cascade arylazidation of activatedalkenes with trimethylsilyl azide (TMSN3) has been developed. Mechanistic investigations reveal that the single electron transfer (SET) of TMSN3 with the excited photocatalyst was involved in the initial step, followed by radical addition/aryl migration/desulfonylation to furnish valuable α-aryl-β-azido amides and azidated oxindoles under mild conditions