Copper-Catalyzed Direct Arylselenation of Anilines by CH Bond Cleavage
作者:Vanessa G. Ricordi、Samuel Thurow、Filipe Penteado、Ricardo F. Schumacher、Gelson Perin、Eder J. Lenardão、Diego Alves
DOI:10.1002/adsc.201400804
日期:2015.3.23
efficient and regioselective synthesis of arylselanyl anilines by copper‐catalyzed directarylselenation of arylamines. Using a catalytic amount of copper iodide in dimethyl sulfoxide at 110 °C under an air atmosphere, a range of arylselanyl anilines was obtained directly from substituted diaryl diselenides in moderate to good yields via CHbondcleavage of aryl amines.
DMSO/iodine-catalyzed oxidative C–Se/C–S bond formation: a regioselective synthesis of unsymmetrical chalcogenides with nitrogen- or oxygen-containing arenes
作者:Sumbal Saba、Jamal Rafique、Antonio L. Braga
DOI:10.1039/c5cy01503k
日期:——
greener protocol to access different types of unsymmetrical chalcogenides with nitrogen- or oxygen-containing arenes through oxidative C–Se/C–S formation via direct C(sp2)–H bond activation was developed. The products were obtained in good to excellent yields using [O or N]-containing arenes, half equiv. of various odorless diorganyl dichalcogenides (S/Se), iodine (20 mol%) as the catalyst and 3 equiv
Metal and base-free synthesis of arylselanyl anilines using glycerol as a solvent
作者:S. Thurow、F. Penteado、G. Perin、R. G. Jacob、D. Alves、E. J. Lenardão
DOI:10.1039/c4gc00874j
日期:——
We describe here a metal and base-free straightforward method to access arylselanyl anilines using glycerol as a solvent. Starting from N,N-disubstituted anilines and arylselanyl chloride, the protocol is general and was successfully applied to a sort of anilines with different substitution patterns in both the aromatic ring and the nitrogen atom. As desirable for a green synthetic procedure, the non-toxic, low volatile, renewable glycerol was used as a solvent at room temperature.
Electrochemical Oxidative C(sp<sup>2</sup>
)-H Bond Selenylation of Activated Arenes
作者:Anne G. Meirinho、Vinícius F. Pereira、Guilherme M. Martins、Sumbal Saba、Jamal Rafique、Antonio L. Braga、Samuel R. Mendes
DOI:10.1002/ejoc.201900992
日期:2019.10.17
Electrochemical C–H bondselenylation of (hetero)arenes: By using an electrochemicaloxidativeC(sp2)–Hselenylation of activated arenes approach, the desired selenylated products were regioselectively obtained in good to excellent yields. The reaction is mediated by the iodine, obtained from the oxidation of KI at the anode.