Shedding Blue Light on the Undergraduate Laboratory: An Easy-to-Assemble LED Photoreactor for Aromatization of a 1,4-Dihydropyridine

David A. Contreras-Cruz ^[1] ; Margarita Cantú-Reyes ^[1] ; Juan M. García-Sánchez ^[1] ; Daniel Peña-Ortíz ^[1] ; Miguel A. Sánchez-Carmona ^[1] ; Luis D. Miranda ^[1]
1. [1] Universidad Nacional Autónoma de México
  
  Universidad Nacional Autónoma de México
  
  México
Localización: Journal of chemical education, ISSN 0021-9584, Vol. 96, Nº 9, 2019, págs. 2015-2020
Idioma: inglés
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Resumen
- A photochemical reactor was tested in an undergraduate teaching laboratory through the environmentally friendly aromatization of a 1,4-dihydropyridine, successfully using air as an oxidant, organic dye fluorescein as a photosensitizer, and sodium carbonate as a base. This experiment allowed students to be taught key concepts of photochemistry, organic photoredox catalysis, and green chemistry for the first time. Herein, we describe the making of the simple, yet robust, high-intensity blue LED photoreactor. The durable device was constructed with materials acquired at a hardware store and electronics shop.