| Visible‑light dehydrogenative synthesis of N‑arylamines via TiO₂–halloysite photocatalysis |
| کد مقاله : 1244-ICOC |
| نویسندگان |
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علی اکبری * 1- گروه شیمی، دانشکده علوم پایه، دانشگاه جیرفت، جیرفت، ایران |
| چکیده مقاله |
| Visible light driven catalytic dehydrogenation offers a mild and sustainable approach for transforming sp³ rich amines into valuable N arylamines [1, 2]. Herein, one dimensional crystalline TiO₂–halloysite nanotubes are employed as an efficient metal free photocatalyst, enabling direct dehydrogenation of 2 cyclohexenyl amine derivatives under ambient conditions with broad functional group tolerance (Scheme 1). The halloysite support directs uniform TiO₂ crystal growth and enhances visible light activity, while MgO acts as a hydrogen atom acceptor to suppress undesired side reactions. The photocatalyst, prepared via low temperature in situ crystallization, allows precise control over the TiO₂ crystalline phase (anatase or anatase/rutile) while preserving structural integrity. The heterogeneous system proceeds under operationally simple conditions, exhibits good substrate scope, and enables facile catalyst recovery and recyclability. Overall, this work establishes a practical, metal free, and visible light driven platform for N arylamine synthesis, expanding the scope of photocatalytic C–N bond forming dehydrogenation reactions [3]. |
| کلیدواژه ها |
| : C–N bond formation, N‑arylamine synthesis, TiO₂–halloysite nanotube, Visible‑light photoredox dehydrogenation |
| وضعیت: پذیرفته شده |