22505-25-5Relevant academic research and scientific papers
Synthesis of unsymmetrical pyrrolo[3,2-b]pyrrole-2,5-diones and bis(quinazolin-4-on-2-yls) by double-anion-capture reactions of unsymmetrical oxaldi(arylimidoyl) dichlorides
Helmholz, Falko,Schroeder, Rita,Langer, Peter
, p. 2507 - 2514 (2006)
Unsymmetrical pyrrolo[3,2-b]pyrrole-2,5-diones and bis(quinazolin-4-on-2- yls) were prepared by one-pot cyclisations of unsymmetrical oxaldi(arylimidoyl) dichlorides. Georg Thieme Verlag Stuttgart.
Synthesis of unsymmetrical bis(imidoyl)dichlorides of oxalic acid
Helmholz, Falko,Schroeder, Rita,Langer, Peter
, p. 1192 - 1196 (2008/02/08)
Unsymmetrical oxalic acid-bis(imidoyl)dichlorides were prepared from ethyl 2-chloro-2-oxoacetate in three steps.
Synthesis of Unsymmetrical Pyrrolo[3,2-b]pyrrole-2,5-diones
Langer, Peter,Helmholz, Falko,Schroeder, Rita
, p. 2389 - 2391 (2007/10/03)
The first unsymmetrical oxalic acid-bis(imidoyl)dichlorides were prepared and applied to the one-pot synthesis of the first unsymmetrical pyrrolo[3,2-b]pyrrole-2,5-diones and 2,2′-bis-quinazolin-4-ones.
FIVE-MEMBERED 2,3-DIOXOHETEROCYCLES. XV. REACTION OF 1-ARYL-4-AROYL-5-METHOXYCARBONYL-2,3-DIHYDRO-2,3-PYRROLEDIONES WITH PRIMARY ARYLAMINES
Maslivets, A. N.,Smirnova, L. I.,Andreichikov, Yu. S.
, p. 1578 - 1582 (2007/10/02)
Arylamines add to the carbon atom at position 5 of 1-aryl-4aroyl-5-methoxycarbonyl-2,3-dihydro-2,3-pyrrolediones with the formation of 1-aryl-5-arylamino-4-aroyl-5-methoxycarbonyl-3-hydroxy-2,5-dihydro-2-pyrrolones.The latter react with an excess of the a
