RT info:eu-repo/semantics/article T1 Mo‐Catalyzed Synthesis of N‐Polyheterocycles From Functionalized Nitroarenes and Aldehydes A1 Martínez González, Raúl A1 Rubio Presa, Rubén A1 Pedrosa Sáez, María de los Remedios A1 Suárez Pantiga, Samuel A1 Sanz Díez, Roberto K1 Catalysis K1 Molybdenum K1 Nitroarenes K1 N-polyheterocycles K1 Tandem processes K1 Química orgánica K1 Chemistry, Organic AB The direct preparation of nitrogen-containing polyaromatic heterocycles in a single operational step from readily availablenitroarenes represents an attractive and sustainable alternative to traditional multistep approaches. In this context, this workdescribes an efficient and versatile methodology for the synthesis of fused N-polyheterocyclic scaffolds from functionalizednitroarenes and aldehydes catalyzed by dioxomolybdenum(VI) complexes and employing pinacol as a readily available andenvironmentally benign reductant. The protocol integrates nitro reduction, imine formation, and intramolecular cyclization ina single operational sequence. Careful fine-tuning of the reaction conditions proved crucial to minimizing competing pathways.This molybdenum-catalyzed strategy exhibits broad substrate scope, accommodating aromatic, aliphatic, and α,β-unsaturatedaldehydes, and enabling access to a variety of pharmaceutically relevant frameworks, such as pyrrolo[1,2-a]quinoxalines,indoloquinoxalines, γ-carbolines, imidazoquinolines, and phenanthridines. PB Wiley SN 2193-5807 YR 2026 FD 2026-05 LK https://hdl.handle.net/10259/11626 UL https://hdl.handle.net/10259/11626 LA eng NO We gratefully acknowledge Ministerio de Ciencia, Innovación y Universidades (PID2023-148198NB-C21) and Junta de Castilla y León and FEDER (BU028P23) for financial support. Raúl Martínez-González thanks Junta de Castilla y León for a predoctoral contract. Samuel Suárez-Pantiga thanks a Ramón y Cajal (RYC2021-031533-I) contract funded by MICIN/AEI/10.13039/501100011033 and European Union “NextGenerationEU”/PRTR. DS Repositorio Institucional de la Universidad de Burgos RD 28-may-2026