The synthesis of substituted indazoles<i>via</i>cyclization of various hydrazones in the presence of polyphosphoric acid (PPA)
作者:Qiu Guofu、Su Jiangtao、Feng Xichun、Wu Lamei、Xu Wenjin、Hu Xianming
DOI:10.1002/jhet.5570410420
日期:2004.7
Research directed toward the discovery of nitric oxide synthase inhibitor led to synthesis of a series of substituted indazoles via the intramolecular cyclization of various hydrazones of substituted acetophenones and benzophenones in the presence of polyphosphoric acid (PPA). The structures of the indazoles were determined by elemental analysis, H nmr, ir, and ms.
致力于发现一氧化氮合酶抑制剂的研究导致在多磷酸(PPA)存在下,通过取代的苯乙酮和二苯甲酮的各种azo的分子内环化反应,合成了一系列取代的吲唑。吲唑的结构通过元素分析,H nmr,ir和ms确定。