Light-mediated cyanomethylation of cycloalkenes with acetonitrile
作者:Harikisan R. Sonawane、Nanjundiah S. Bellur、Virendra G. Shah
DOI:10.1039/c39900001603
日期:——
Addition of cyanomethyl radicals generated from acetonitrile involving initiation by photoinduced decomposition of hydrogen peroxide, to cycloalkenes has been achieved; a method for the synthesis of two homologous nitriles is first reported.
cyanomethyl radical species is generated from a cyanomethylphosphonium ylide by irradiation with visible light in the presence of an iridium complex, a thiol, and ascorbic acid. The cyanomethyl radical species then adds across the C=C double bond of an alkene to form an elongated alkyl radical species that accepts a hydrogen atom from the thiol to produce an elongated aliphaticnitrile. The ascorbic
Visible-light-driven 1,2-hydro(cyanomethylation) of alkenes with chloroacetonitrile
作者:Keito Fuke、Tomoya Miura
DOI:10.1039/d3ob01533e
日期:——
A regioselective 1,2-hydro(cyanomethylation) of unactivated aliphatic alkenes is reported. A cyanomethyl radical is generated from haloacetonitriles. This radical adds onto alkenes to form alkyl radicals, which undergo hydrogen atom transfer from thiol to produce one-carbon-extended nitriles. Furthermore, the alkyl radicals are applied to cascade cyclization.