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Synfacts 2018; 14(08): 0871
DOI: 10.1055/s-0037-1610473
DOI: 10.1055/s-0037-1610473
Polymer-Supported Synthesis
Photodehydrogenation of N-Heterocycles with Hexagonal Boron Carbon Nitride
Further Information
Publication History
Publication Date:
18 July 2018 (online)

Significance
Hexagonal boron carbon nitride (h-BCN) catalyzed the acceptorless dehydrogenation of hydroquinolines, hydroisoquinolines, and indolines in water at room temperature under visible-light irradiation to give the corresponding aromatic N-heterocycles in 41–95% yield (14 examples).
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Comment
The authors previously reported the preparation of h-BCN and its application to the oxidative dehydrogenation of ethylbenzene (Angew. Chem. Int. Ed. 2017, 56, 8231). Under dark conditions, the dehydrogenation with h-BCN did not proceed. In the dehydrogenation of 1,2,3,4-tetrahydroquinoline, the catalyst was recovered by simple filtration and reused four times with slight loss of its catalytic activity.
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