Synthesis of 5-(4-bromophenyl)- and 5-(5-bromothiophen-2-yl)-substituted 3-aryl[1,2,4]triazolo[4,3-c]quinazolines
作者:E. V. Nosova、A. E. Kopotilova、M. A. Ivan’kina、T. N. Moshkina、D. S. Kopchuk
DOI:10.1007/s11172-022-3554-7
日期:2022.7
A series of [1,2,4]triazolo[4,3-c]quinazolines, bearing 3-positioned p-bromophenyl or 5-bromothiophen-2-yl fragment, was synthesized by oxidative cyclization of the corresponding hydrazones with bromine in glacial acetic acid at room temperature. The obtained tricyclic derivatives are valuable intermediates for biologically active compounds and fluorophores.
一系列[1,2,4]三唑并[4,3 - c ]喹唑啉,带有3位对溴苯基或5-溴噻吩-2-基片段,通过相应的腙与溴在冰河中的氧化环化合成。乙酸在室温下。获得的三环衍生物是生物活性化合物和荧光团的有价值的中间体。