367526-66-7Relevant academic research and scientific papers
Cp?Ir(III)-Catalyzed C-H/O-H Functionalization of Salicylaldehydes for the Synthesis of Chromones at Room Temperature
Lade, Dhanaji M.,Aher, Yogesh N.,Pawar, Amit B.
, p. 9188 - 9195 (2019)
Herein, we report Cp Ir(III)-catalyzed C-H/O-H-bond functionalization of salicylaldehydes with α-diazocarbonyl compounds for the synthesis of chromones under redox-neutral conditions. The reaction proceeds at room temperature and displays excellent functi
Controllable Rh(III)-Catalyzed Annulation between Salicylaldehydes and Diazo Compounds: Divergent Synthesis of Chromones and Benzofurans
Sun, Peng,Gao, Shang,Yang, Chi,Guo, Songjin,Lin, Aijun,Yao, Hequan
, p. 6464 - 6467 (2016/12/23)
A Rh(III)-catalyzed annulation between salicylaldehydes and diazo compounds with controllable chemoselectivity is described. AgNTf2 favored benzofurans via a tandem C-H activation/decarbonylation/annulation process, while AcOH led to chromones through a C-H activation/annulation pathway. The reaction exhibited good functional group tolerance and scalability. Moreover, only a single regioisomer of benzofuran was obtained due to the in situ decarbonylation orientation effect.
A highly practical route to 2-methylchromones from 2-acetoxybenzoic acids
Jung,Min,Park
, p. 1837 - 1845 (2007/10/03)
2-Methylchromones were accessed via a keto ester condensation on 2-acetoxybenzoyl chloride, followed by cyclization and decarboxylation. No column chromatography was required in the process.
