17953-06-9Relevant academic research and scientific papers
A multi-substituted 4 - hydroxy pyrazole derivatives of the preparation method
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Paragraph 0025; 0028; 0029, (2017/08/25)
The invention provides a preparation method of a multi-substituted 4-hydroxypyrazole derivative. An alkenyl azide derivative and a hydrazine compound which are chemically synthesized easily are generated under the condition of room temperature. The provid
Synthesis of polysubstituted 4-aminopyrazoles and 4-hydroxypyrazoles from vinyl azides and hydrazines
Huang, Wei,Liu, Shen,Chen, Binhui,Guo, Xiao,Yu, Yongping
, p. 32740 - 32743 (2015/04/27)
A simple and direct synthesis of polysubstituted 4-aminopyrazoles and 4-hydroxypyrazoles from vinyl azides and hydrazines was developed. The present reactions were performed under mild conditions in moderate to excellent yields. A possible mechanism is al
Synthesis and biological properties of 2-pyrrolidinoethoxy derivatives of 3,5-diarylpyrazoles and 2-pyrazolines
Sangwan, Naresh K.,Verma, Braham S.,Dhindsa, Kuldip Singh
, p. 508 - 512 (2007/10/02)
Cyclization of 2'-or 4'-hydroxy-4-methoxychalkone (1,2) with hydrazine hydrate in refluxing formic or acetic acid gives 1-acyl-5-aryl-3-(2-or 4-hydroxyphenyl)-2-pyrazolines (3-6).Alkylation of 1-6 and 4-hydroxy-3,5-diphenylpyrazole (17) with N-(2-chloroet
