Synthesis and characterization of some pyrazole derivatives of 1,5-diphenyl-1H-pyrazole-3,4-dicarboxylic acid
作者:Rahmi Kasımoğulları、B. Seçkin Arslan
DOI:10.1002/jhet.416
日期:——
4‐(ethoxycarbonyl)‐1,5‐diphenyl‐1H‐pyrazole‐3‐carboxylic acid 2 was obtained from the reaction of ethyl 4,5‐dioxo‐2‐phenyl‐4,5‐dihydrofuran‐3‐carboxylate and 1‐benzylidene‐2‐phenylhydrazine. A number of substitute pyrazole dicarboxylic acid derivatives (4, 5a, 5b, 5c, 6, 7, 8, 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h, 9i, 9j, 9k, 9l, 9m, 10, 11, 12, 13, 14) were synthesized from 1,5‐diphenyl‐1H‐pyrazole‐3,4‐dicarboxylic
4,(乙氧基羰基)-1,5-二苯基-1 H-吡唑-3-羧酸2的化合物是由4,5-二氧杂-2-苯基-4,5-二氢呋喃-3-羧酸乙酯反应制得的和1-亚苄基-2-苯基肼。许多替代吡唑的二羧酸衍生物(的4,图5a,图5b,图5c,6,7,8,图9a,图9b,图9c,图9d,图9e,9f中,9克,9H,9I,9J,9K,9升,9米,10,11,12,13,14)是从1,5-二苯基-1-合成ħ吡唑-3,4-二羧酸3,将其从碱性水解制备2。合成的化合物的结构通过1 H NMR,13 C NMR,质量,FTIR和元素分析进行表征。J.杂环化学。(2010)。