Heterogeneous mesoporous manganese oxide catalyst for aerobic and additive-free oxidative aromatization of N-heterocyclesElectronic supplementary information (ESI) available: Experimental details, Tables S1-S4, Fig. S1-S12 and Schemes S1-S3 and spectral characterization of typical products. See DOI: 10.1039/c6cc09095h

• Main Authors: Mullick, Kankana, Biswas, Sourav, Angeles-Boza, Alfredo M, Suib, Steven L
• Format: Article
• Language: English
• ISSN: 1359-7345; 1364-548X
• DOI: 10.1039/c6cc09095h

Herein, we report a heterogeneous, aerobic, additive-free and environmentally benign catalytic protocol for oxidative aromatization of saturated nitrogen-heterocycles using a mesoporous manganese oxide material. The aromatized products can be separated by easy filtration and the catalyst is reusable for at least four cycles. Mechanistic investigation provides evidence for radical intermediates, a multi-electron redox cycle between Mn centers, and an oxygen exchange mechanism. Herein, we report a heterogeneous, aerobic, additive-free and environmentally benign catalytic protocol for oxidative aromatization of saturated nitrogen-heterocycles using a mesoporous manganese oxide material.