Intramolecular amination of olefins. Synthesis of 2-substituted-4-quinolones from 2-nitrochalcones catalysed by ruthenium

Abstract

2-Substituted-4-quinolones 2 and the corresponding 2,3-dihydro-2-substituted-4-quinolones 3 have been obtained by reduction with CO at 170 °C and 30 atm of 2-nitrochalcones 1, catalysed by Ru₃(CO)₁₂ with DIAN-Me as co-catalyst in ethanol–water.