84571-12-0Relevant academic research and scientific papers
Photochemical synthesis of indazolo[3,2-b]quinazolines and their redox-switching properties
Li, Shi-Chen,Jhang, Wei-Fang,Liou, Teau-Jiuan,Yang, Ding-Yah
, p. 259 - 266 (2015)
Several indazolo[3,2-b]quinazolines were synthesized in moderate to good yields by exposing 2-(2-nitrophenyl)-1,2,3,4-tetrahydroquinazolines to UV light (306 nm) in acetonitrile. The scope, limitation, and possible mechanism of this light-mediated reaction as well as the redox-switching properties of the target compounds were explored. Reduction of the colored indazolo[3,2-b]quinazoline with sodium borohydride resulted in a distinct change to colorless and a sharp increase in fluorescence intensity. The reduced product can be swiftly reverted to the original form by 2,3-dichloro-5,6-dicyano-1,4-benzoquinone oxidation. The reversible redox-switching between the indazolo[3,2-b]quinazoline and its reduced product utilizing chemical reduction and oxidation as two external stimuli with dual output properties; that is, color change and emission variation was reported.
A convenient one-pot procedure for the synthesis of 2-aryl quinazolines using active MnO2 as oxidant
Peng, Yi-Yuan,Zeng, Yuyun,Qiu, Ganyinsheng,Cai, Lisheng,Pike, Victor W.
experimental part, p. 1240 - 1245 (2010/11/18)
(Chemical Equation Presented) A variety of 2-aryl quinazolines were synthesized from the condensation of 2-aminobenzylamines and aryl aldehydes to form 2-aryl-1,2,3,4-tetrahydroquinazolines and subsequent oxidation of the intermediates with MnO2/sub
