Synthesis of some pyrazole-3-carboxylic acid-hydrazide and pyrazolopyridazine compounds
作者:İ Özer İlhan、Emin Saripinar、Yunus Akçamur
DOI:10.1002/jhet.5570420117
日期:2005.1
Furan-2,3-diones 1a-c react with various hydrazines 2a-c under different conditions to yield the pyrazole-3-carboxylic acid-hydrazide 3a-d. Cyclocondensation reactions of 1a or 7 with phenylhydrazine lead to derivatives of pyrazolo[3,4-d]pyridazinones 6 and 8, respectively. The structures of all products were confirmed by elemental analysis, IR, 1H- and 13C-NMR spectroscopic measurements.
呋喃-2,3-二酮1a-c在不同条件下与各种肼2a -c反应,得到吡唑-3-羧酸-酰肼3a-d。1a或7与苯肼的环缩合反应分别生成吡唑并[3,4- d ]哒嗪酮6和8的衍生物。所有产品的结构均通过元素分析,IR,1 H-和13 C-NMR光谱测定证实。