Palladium-Catalyzed Visible-Light-Driven Carboxylation of Aryl and Alkenyl Triflates by Using Photoredox Catalysts was written by Shimomaki, Katsuya;Nakajima, Tomoya;Caner, Joaquim;Toriumi, Naoyuki;Iwasawa, Nobuharu. And the article was included in Organic Letters in 2019.Name: tert-Butyl 5,6-dihydropyridine-1(2H)-carboxylate This article mentions the following:
A visible-light-driven carboxylation of aryl and alkenyl triflates with CO2 is developed by using a combination of Pd and photoredox catalysts. This reaction proceeds under mild conditions and can be applied to a wide range of substrates including acyclic alkenyl triflates. In the experiment, the researchers used many compounds, for example, tert-Butyl 5,6-dihydropyridine-1(2H)-carboxylate (cas: 85838-94-4Name: tert-Butyl 5,6-dihydropyridine-1(2H)-carboxylate).
tert-Butyl 5,6-dihydropyridine-1(2H)-carboxylate (cas: 85838-94-4) belongs to pyridine derivatives. Pyridine has a conjugated system of six π electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. One of the examples of pyridines is the well-known alkaloid lithoprimidine, which is an A3 adenosine receptor antagonist and N,N-dimethylaminopyridine (DMAP) analog, commonly used in organic synthesis.Name: tert-Butyl 5,6-dihydropyridine-1(2H)-carboxylate