32700-64-4Relevant academic research and scientific papers
Syntheses of quinazolinones from 2-iodobenzamides and enaminones via copper-catalyzed domino reactions
Songsichan, Teerawat,Promsuk, Jaturong,Rukachaisirikul, Vatcharin,Kaeobamrung, Juthanat
, p. 4571 - 4575 (2014/06/24)
N-Substituted 2-iodobenzamides and enaminones undergo cascade transformations to achieve quinazolinones via a copper-catalyzed Ullmann-type coupling, a Michael addition and a retro-Mannich reaction. A unique stereochemical feature of this domino process was that Z-enaminones reacted without external ligands, whereas E-enaminones required the assistance of ligands. This journal is
Amine-induced rearrangement of 4-imino-4H-3,1-benzoxazines to 4-quinazolinones via amidine carboxamides
Snider, Barry B.,Zeng, Hongbo
, p. 173 - 182 (2007/10/03)
Iminobenzoxazines (2) react with pyrrolidine in EtOAc at reflux to give amidine carboxamides (11), which cyclize to quinazolinones (3) on heating in 99:1 MeCN/HOAc. However, both amidines (11d) and (13d) are formed if R 1 = Ar and R2
Studies on 4(1H)-quinazolinones. 5. Synthesis and antiinflammatory activity of 4(1H)-quinazolinone derivatives
Ozaki,Yamada,Oine,Ishizuka,Iwasawa
, p. 568 - 576 (2007/10/02)
A number of new 4(1H)-quinazolinones were synthesized and evaluated in the carrageenin-induced paw edema test. Most of the compounds were obtained by the cyclization of the appropriately substituted anthranilamides with acid chlorides, followed by further chemical transformation. Structure-activity data suggest that 2-isopropyl-1-phenyl-, 2-cyclopropyl-1-phenyl-, and 1-isopropyl-2-phenyl-4(1H)-quinazolinones afford optimal potency and the presence of a halogen atom is preferred for activity. Adrenalectomy does not affect the antiinflammatory test results. The best result taking into account both efficacy and side effects was displayed by 1-isoproyl-(2-fluorophenyl)-4(1H)-quinazolinone.
