In 2022,Chen, Yi; Liu, Di; Wang, Rui; Xu, Li; Tan, Jingyao; Shu, Mao; Tian, Lingfeng; Jin, Yuan; Zhang, Xiaoke; Lin, Zhihua published an article in Journal of Organic Chemistry. The title of the article was 《Bronsted Acid-Catalyzed : Synthesis of Phenanthrenes via Phosphomolybdic Acid as a Catalyst》.Formula: C6H4BrNO The author mentioned the following in the article:
Herein, disclosed a synthetic protocol for the synthesis of phenanthrenes such as I [R = H, Me; R1 = H, Me, OMe, etc.; R2 = H, F, OMe, etc.; R3 = H, OTIPS; R4 = H, F, Cl, etc.] through the CCOM with the inexpensive, nontoxic phosphomolybdic acid as a catalyst. The current annulations could realized carbonyl-olefin, carbonyl-alc., and acetal-alc. in situ CCOM reactions and feature mild reaction conditions, simple manipulation and scalability, making this strategy a promising alternative to the Lewis acid-catalyzed COM reaction.2-Bromonicotinaldehyde(cas: 128071-75-0Formula: C6H4BrNO) was used in this study.
2-Bromonicotinaldehyde(cas: 128071-75-0) belongs to pyridine. Pyridine derivatives lend themselves to many roles in the spirited field of supramolecular chemistry – whether as the ligand backbone of metal-organic polymers or presiding over the key electronic stations of nanodevices. In biochemistry, pyridine-containing cofactors are necessary nutrients on which our lives depend. Formula: C6H4BrNO