Regioselective Synthesis of Substituted Imidate N-[1-Methyleneisobenzofuran-3(1H)-ylidene]benzenamines via Palladium-Catalyzed Tandem Heteroannulation of o-(1-Alkynyl)benzamides with Iodobenzene
A variety of substituted imidate N-[1-methyleneisobenzofuran-3(1H)-ylidene]benzenamines have been prepared in good to excellent yields by the palladium-catalyzed tandem heteroannulation of o-(1-alkynyl)benzamides with iodobenzene. The products obtained from this process were unusual substituted N-[isobenzofuran-3(1H)-ylidene]benzenamines. The tandem cyclization of readily available o-(1-alkynyl)benzamides
Controlled Photochemical Synthesis of Substituted Isoquinoline-1,3,4(2<i>H</i>)-triones, 3-Hydroxyisoindolin-1-ones, and Phthalimides via Amidyl Radical Cyclization Cascade
We report a controlled radicalcyclizationcascade of isoquinoline-1,3,4(2H)-triones, 3-hydroxyisoindolin-1-ones, and phthalimides from o-alkynylated benzamides by metal-free photoredox catalyzed amidyl N-centered radicaladdition to the C–C triple bond using the proton-coupled electron transfer (PCET) process under mild reaction conditions. A time tunable synthesis of 3-hydroxyisoindolin-1-ones and
An unprecedented reductive hydroamidative/hydroquinazolinative cascade cyclization of o-alkynylated derivatives was achieved via proton-coupled electron transfer (PCET) under electrolysis. In a single step, the rapid assembly of isoindolinones and novel isoindole-fused quinazolinones were achieved through electrolysis by the hydroamidation of amidyl/quinazolinone aminyl radicals with C–C triple bond