124570-55-4Relevant articles and documents
Water-mediated selective synthesis of pyrazolo[1,5-a ]quinazolin-5(4 H)-ones and [1,2,4]triazolo[1,5-a ]quinazolin-5(4 H)-one via copper-catalyzed cascade reactions
Zhang, Xinying,Gao, Lin,Wang, Zhangxin,Fan, Xuesen
, p. 2426 - 2435 (2015)
A convenient and sustainable synthesis of pyrazolo[1,5-a]quinazolin-5(4H)-ones and [1,2,4]triazolo[1,5-a]quinazolin-5(4H)-one through copper-catalyzed cascade reactions of 2-bromobenzoates with 1H-pyrazol-5-amines or 1H-1,2,4-triazol-5-amine under ligand-
An unexpected aminolysis in the synthesis of 5-substituted 3-(1H-tetrazol-5-yl)pyrazolo[1,5-a]quinazolines
Peet
, p. 713 - 716 (2007/10/02)
A synthetic route to 5-substituted 3-(1H-tetrazol-5-yl)pyrazolo[1,5-a]quinazolines is described. An unexpected displacement of a 4-morpholinyl group from the 5-position of this system occurred during tetrazole formation by the ammonia produced by in situ generation of hydrazoic acid from ammonium chloride and sodium azide.