Reaction of 3-(5-nitro-2-furyl)-1-aryl-2-propyn-1-ones (1) with aroylhydrazines (2) furnished 1-aroyl-3-(5-nitro-2-furyl)-5-aryl-5-hydroxy-2-pyrazolines (5) rather than the expected pyrazoles 3 or 4. On acid-catalyzed hydrolysis these hydroxypyrazolines are converted into the known 3-(5-nitro-2-furyl)-5-aryl-1H-pyrazoles (6). The structural elucidation of the products was carried out on the basis of
                                    3-(5-nitro-2-furyl)-1-aryl-2-propyn-1-ones (1) 与芳酰
肼 (2) 的反应得到 1-aroyl-3-(5-nitro-2-furyl)- 5-芳基-5-羟基-2-
吡唑啉 (5) 而不是预期的
吡唑 3 或 4。在酸催化
水解中,这些羟基
吡唑啉转化为已知的 3-(5-硝基-2-
呋喃基)-5-芳基-1H-
吡唑 (6)。产物的结构解析是在分析和光谱数据的基础上进行的。筛选新合成的硝基
呋喃衍
生物对革兰氏阳性菌和革兰氏阴性菌的抗菌特性。它们中的大多数表现出显着的活性。