Among a variety of heteroaromatics, 1, 2, 3, 4-tetrahydroquinolines,-isoquinolines and- quinoxalines are three significant substructures in many bioactive compounds and have attracted a great deal of attention in research concerning pharmaceuticals, agrochemicals, dyes and fragrances, as well as hydrogen-storage materials.[1] They can be directly accessed by hydrogenation from commercially available quinolines, isoquinolines and ...
