220457-08-9

Upstream product

• 220407-37-4 3-(2-chloro-2-phenylethyl)-3,4-dihydroquinazolin-4-one 
• 491-36-1 4-Hydroxyquinazoline 
• 588-72-7 [(E)-2-bromoethenyl]benzene 
• 5271-04-5 3-(2-hydroxy-2-phenylethyl)-3,4-dihydroquinazolin-4-one 
• 118-92-3 anthranilic acid 

Relevant academic research and scientific papers

Synthesis and photophysical properties of N-styrylazinones

(Chemical Equation Presented) N-Styrylazinones and 1-styrylbenzotriazine were synthesized, and their photophysical properties were investigated. (Z)- and/or (E)-N-Styrylazinones (or azine) 4 were prepared from the corresponding heterocycles 1 and benzaldehyde (3) by four methods. The absorption maxima of (Z)- and/or (E)-4a - 4j were measured in four solvents. Their absorption maxima showed a moderate dependence upon solvents. The absorption maxima of (Z)-isomers were blue-shifted as compared the corresponding (E)-isomers. Emission maxima, fluorescence band half-widths, 0,0 transition energies, Stokes shifts, and quantum yields of (Z)- and/or (E)-4a, 4b, 4d, 4e and 4j were measured in organic solvents. The fluorescence spectra show moderate solvatochroism. The fluorescence properties of N-styrylheterocycles vary with every heterocycles.

Structure elucidation and synthesis of a new bioactive quinazolone derivative obtained from Glycosmis cf. chlorosperma

A new quinazolone derivative, (Z)-3,4-dihydro-3-(2-phenylethenyl)- quinazolin-4-one, was isolated from Glycosmis cf. chlorosperma SPRENG. (Rutaceae). The structure was elucidated on the basis of spectroscopic data and confirmed by comparison with synthetically obtained material. The compound showed bioactivity against different test organisms.