2026-04-22T15:07:10Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/60912022-11-10T11:59:12Zcom_10259_3596com_10259_5086com_10259_2604com_10259_3593col_10259_3597col_10259_3594

00925njm 22002777a 4500 dc Hernández Ruiz, Raquel author Rubio Presa, Rubén author Suarez Pantiga, Samuel author Pedrosa Sáez, María de los Remedios author Fernández Rodríguez, Manuel A. author Tapia Estévez, M" José author Sanz Díez, Roberto author 2021-09 A catalytic domino reduction–imine formation– intramolecular cyclization–oxidation for the general synthesis of a wide variety of biologically relevant N-polyheterocycles, such as quinoxaline- and quinoline-fused derivatives, and phenanthridines, is reported. A simple, easily available, and environmentally friendly dioxomolybdenum(VI) complex has proven to be a highly efficient and versatile catalyst for transforming a broad range of starting nitroarenes involving several redox processes. Not only is this a sustainable, stepeconomical as well as air- and moisture-tolerant method, but also it is worth highlighting that the waste byproduct generated in the first step of the sequence is recycled and incorporated in the final target molecule, improving the overall synthetic efficiency. Moreover, selected indoloquinoxalines have been photophysically characterized in cyclohexane and toluene with exceptional fluorescence quantum yields above 0.7 for the alkyl derivatives. 1521-3765 http://hdl.handle.net/10259/6091 10.1002/chem.202102000 Dioxomolybdenum N-heterocycles Nitroaromatics Photophysical properties Reuse of waste Mo–Catalyzed One-Pot Synthesis of N-Polyheterocycles from Nitroarenes and Glycols with Recycling of the Waste Reduction Byproduct. Substituent-Tuned Photophysical Properties