82216-65-7Relevant academic research and scientific papers
Improved and expanded one-pot, two-component Boulton-Katritzky syntheses of N–N bond containing bicyclic heterocycles
Knouse, Kyle W.,Ator, Laura E.,Beausoleil, Lauren E.,Hauseman, Zachary J.,Casaubon, Rebecca L.,Ott, Gregory R.
, p. 202 - 205 (2016/12/28)
Improved and expanded one-pot, two-component syntheses of bicyclic heterocycles containing a 3-N-acyl-3-amino-1,2-pyrazole motif from N'-hydroxy-carboxyamidines and acylbenzotriazoles have been developed. Importantly, this sequence obviates the need for h
Ring Transformation of 1,2-Disubstituted 4(1H)-Quinazolone Oximes to 3,5-Disubstituted 1,2,4-Oxadiazoles
Korbonits, Dezsoe,Kanzel-Szvoboda, Ida,Goenczi, Csaba,Simon, Kalman,Kolonits, Pal
, p. 1107 - 1112 (2007/10/02)
In basic media O-benzoyl- and O-acetyl-2-benzylaminobenzamide oxime (8b, c) give 5-substituted 3-(2-benzylaminophenyl)-1,2,4-oxadiazoles (9a, b), while on heating in pure water 2-amino-1-benzylbenzimidazole (10) is formed.Reaction of 2-(N-acylbenzylamino)benzonitrile (12) with hydroxylamine, or treatment of O-acyl-2-(N-benzoylbenzylamino)benzamide oximes (8f, g) with acid give the novel 1,2-disubstituted 4(1H)-quinazolone oximes 13, which isomerize on heating with alkali by an ANRORC mechanism to the 1,2,4-oxadiazoles 9a, b. - Keywords: ANRORC mechanism; 1,2,4-Oxadiazoles; 4(1H)-Quinazolone oximes
Ring Transformation of 3-(2-Aminoaryl)-1,2,4-oxadiazoles into 3-Acylaminoindazoles; Extension of the Boulton-Katritzky Scheme
Korbonits, Dezsoe,Kanzel-Szvoboda, Ida,Horvath, Karoly
, p. 759 - 766 (2007/10/02)
The ring transformation of 3-(2-aminoethyl)-1,2,4-oxadiazoles (1) into acylaminopyrazolines (2) reported earlier has been extended to 5-substituted 3-(2-aminoaryl)-1,2,4-oxadiazoles (3), (5), (7), and (9).Depending on the reaction conditions and the subst
