Substituted pyrazines have gained increased attention in recent years due to their usefulness as important constituents either of biologically active compounds 1., , , , , , and or functional materials. 2 In particular, substituted 2-aminopyrazines are key synthetic intermediates to the luciferins and their analogues, 3 which have long been known as chemiluminescent and/or bioluminescent agents. 4., , , , , , 5., , and Irrespective of their importance, an efficient synthetic route to ...