80012-16-4Relevant articles and documents
Metal-Free Cascade Annulation Approach for Modular Assembly of Alkynyl/Benzoyl Functionalized Quinolines
Tang, Qiang,Yuan, Meng,Duan, Jiahui,Xu, Keke,Li, Ruxue,Xie, Mengqing,Kong, Shuwen,He, Xinwei,Shang, Yongjia
supporting information, (2022/01/19)
A concise and efficient synthetic method for alkynyl quinolines through TfOH-promoted cascade 1,4-conjugate addition/intramolecular annulation/aromatization process is established. By virtue of reactive aza-o-AQM (in situ generated from modular propargylamine), this reaction proceeds smoothly to afford a variety of alkynyl quinolines in good to excellent yields. This transition-metal-free process features halogen groups tolerance, such as the ?Cl, ?Br, and ?I groups; thus, this protocol circumvents the inherent shortcomings of the existing Sonogashira coupling of halogenated quinolines.
Iodine-Promoted Formal [3+2] Cycloaddition of Enaminone: Access to 2-Hydroxy-1,2-dihydro-pyrrol-3-ones with Quaternary Carbon Center
Yu, Xiao-Xiao,Zhao, Peng,Zhou, You,Huang, Chun,Wang, Li-Sheng,Wu, Yan-Dong,Wu, An-Xin
, p. 12141 - 12147 (2021/09/07)
A novel iodine promoted cyclization of enaminone with aryl methyl ketones has been developed as a straightforward method for constructing 2-hydroxy-pyrrol-3(2H)-ones. This strategy affords structurally diverse 2-hydroxy-pyrrol-3(2H)-ones rings in high yields. Moreover, a quarternary alcohol has been constructed efficiently in the reaction. Product purification required only washing with CH2Cl2 solvent, thereby avoiding traditional chromatography and recrystallization, making this an example of group-assisted purification chemistry.
Synthesis of new fluorescent molecules having an aggregation-induced emission property derived from 4-fluoroisoxazoles
Karuo, Yukiko,Kawai, Kentaro,Kawasaki, Akira,Omote, Masaaki,Sato, Kazuyuki,Tarui, Atsushi
supporting information, p. 1411 - 1417 (2020/07/08)
Fluorescent molecules based on a fluorinated isoxazole scaffold were synthesized and investigated for their photochemical properties. The introduction of a fluorine substituent into 3,5-diarylisoxazoles led to an increase of fluorescence intensity and exh