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Cyclization of 2,6-dialkoxy acetophenone hydrazones in the presence of polyphosphoric acid (PPA)

โœ Scribed by Yu-Zhu Qiu; Zheng Zhang; Zhen-Qi Zhong; Hong-Wen Hu

Book ID
112060118
Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
266 KB
Volume
10
Category
Article
ISSN
0256-7660

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The synthesis of substituted indazoles via cyclization of various hydrazones in the presence of polyphosphoric acid (PPA)
โœ Qiu Guofu; Su Jiangtao; Feng Xichun; Wu Lamei; Xu Wenjin; Hu Xianming ๐Ÿ“‚ Article ๐Ÿ“… 2004 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 134 KB

## Abstract 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 struc