title: Copper(I)-catalyzed synthesis of 5-arylindazolo[3,2-b]quinazolin-7(5H)-one via Ullmann-type reaction.
abstract: The treatment of 2-amino-N'-arylbenzohydrazide and o-halogenated benzaldehyde in the presence of CuBr and Cs2CO3 gave 5-arylindazolo[3,2-b]quinazolin-7(5H)-one in high yields. This procedure contains an Ullmann-type reaction and provides an efficient method to construct fused tetracyclic heterocycles.
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou Jiangsu 221116, PR China.
authors.forename: Dong-Sheng
authors.initials: DS
authors.lastname: Chen
authors.forename: Guo-Lan
authors.initials: GL
authors.lastname: Dou
authors.forename: Yu-Ling
authors.initials: YL
authors.lastname: Li
authors.forename: Yun
authors.initials: Y
authors.lastname: Liu
authors.forename: Xiang-Shan
authors.initials: XS
authors.lastname: Wang
mesh_terms: D001965:Bromides / Q000737:chemistry*; D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D015394:Molecular Structure; D052999:Quinazolinones / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: C585105:5-phenylindazolo(3,2-b)quinazolin-7(5H)-one; D001965:Bromides; D052999:Quinazolinones; C408079:cupric bromide; D003300:Copper