72-44-6Relevant articles and documents
Synthesis of methaqualone and its diphasic titration in pure and tablet forms
Soliman,Shafik,Elnenaey
, p. 411 - 413 (1978)
A one-step synthesis of methaqualone from N-acetylanthranilic acid and O-toluidine in the absence of a catalyst is described. A rapid diphasic titration procedure for its microestimation in pure and tablet forms, using dioctyl sulfosuccinate and dimethyl yellow screened with oracet blue B, is proposed. The data were compared with those obtained from nonaqueous titration methods.
α-Hydroxy acid as an aldehyde surrogate: metal-free synthesis of pyrrolo[1,2-a]quinoxalines, quinazolinones, and other N-heterocyclesviadecarboxylative oxidative annulation reaction
Jung, Chanhyun,Jung, Jae-Kyung,Lee, Heesoon,Lee, Kiho,Lee, Seohu,Park, Yunjeong,Sim, Jaeuk,Viji, Mayavan,Vishwanath, Manjunatha
, p. 37202 - 37208 (2020/10/28)
A metal-free and efficient procedure for the synthesis of pyrrolo[1,2-a]quinoxalines, quinazolinones, and indolo[1,2-a]quinoxaline has been developed. The key features of our method include thein situgeneration of aldehyde from α-hydroxy acid in the presence of TBHP (tert-butyl hydrogen peroxide), and further condensation with various amines, followed by intramolecular cyclization and subsequent oxidation to afford the corresponding quinoxalines, quinazolinones derivatives in moderate to high yields.
Transition metal-free synthesis of quinazolinones using dimethyl sulfoxide as a synthon
Lee, Seohoo,Sim, Jaeuk,Jo, Hyeju,Viji, Mayavan,Srinu, Lanka,Lee, Kiho,Lee, Heesoon,Manjunatha, Vishwanath,Jung, Jae-Kyung
supporting information, p. 8067 - 8070 (2019/09/19)
Biologically important quinazolinones have been synthesized from 2-aminobenzamides and DMSO. The key feature of the reaction is the utilization of DMSO as a methine source for intramolecular oxidative annulation. The CNS depressant drug methaqualone has also been synthesized by our methodology. The present method involves the synthesis of quinazolinones with a broad substrate scope and a good yield.