“…The dehydrogenation of saturated N-heterocycles to their corresponding N-heteroaromatic compounds is a fundamental and fascinating transformation in synthetic, materials, and medicinal chemistry. 1 The dehydrogenation of saturated N-heterocycles is conventionally conducted using stoichiometric amounts of oxidants such as DDQ, 2 metal oxides, 3 and others, 4 however, these methods are less attractive because of the toxicity and waste disposal associated with the oxidants. In recent years, transition metal-catalyzed acceptorless dehydrogenation has been regarded as a promising route for the synthesis of N-heteroaromatic compounds, 5 because acceptorless dehydrogenation requires no stoichiometric oxidants and produces only molecular hydrogen as a byproduct.…”