Electrophotocatalytic C−H Heterofunctionalization of Arenes
作者:He Huang、Tristan H. Lambert
DOI:10.1002/anie.202100222
日期:2021.5.10
The electrophotocatalyticheterofunctionalization of arenes is described. Using 2,3‐dichloro‐5,6‐dicyanoquinone (DDQ) under a mild electrochemical potential with visible‐light irradiation, arenes undergo oxidant‐free hydroxylation, alkoxylation, and amination with high chemoselectivity. In addition to batch reactions, an electrophotocatalytic recirculating flow process is demonstrated, enabling the
Indium-mediated efficient conversion of azides to carbamates
作者:Jhillu S. Yadav、Basi V. Subba Reddy、Garudammagari S. Kiran Kumar Reddy
DOI:10.1039/b002660n
日期:——
A novel and efficient method for the high yield preparation
of carbamates by the reaction of azides with several chloroformates using indium metal in DMF at
ambient temperature is described for the first time.
Nickel(II)- and Silver(I)-Catalyzed C–H Bond Halogenation of Anilides and Carbamates
作者:Ebrahim Kianmehr、Hadi Afaridoun
DOI:10.1055/s-0040-1705972
日期:2021.4
ortho-C–H bond halogenation of anilides and N-aryl carbamates using easily available N-halosuccinimides (NXS) as the active halogenation reagent in the presence of nickel or silver catalyst has been developed. This method provides a new approach to 2-haloanilides and carbamates, which may serve as starting materials for the synthesis of pharmaceutically and biologically active compounds.