Unusual rearrangement in the reactions of phenylmalonic acid dihydrazide with 1, 3-Diketones
作者:Mahmoud Al-Talib、Hasan Tashtoush、Areej Al-Ghoul、Burkhard Ziemer、Ulrich Koert
DOI:10.1002/jhet.5570420217
日期:2005.3
Phenylmalonic acid dihydrazide reacted with 2,4-pentanedione to give, unexpectedly, 5,7-dimethyl-1,3-dioxo-2-phenyl-2,3-dihydro-1H-pyrazolo[1,2-a]pyrazole-4-ylium 5. The structure of the product is confirmed by X-ray crystallography.
苯丙二酸二酰肼与2,4-戊二酮反应,出乎意料地得到5,7-二甲基-1,3-二氧杂-2-苯基-2,3-二氢-1 H-吡唑并[1,2- a ]吡唑- 4-yl5 。产物的结构通过X射线晶体学确认。