A novel compound of the formula: A--Z--Ar.sup.1 1'CO--Ar.sup.2 wherein A is a condensed pyrimidinone or condensed pyridazinone ring; Ar.sup.1 and Ar.sup.2 are independently a ring; Z is a divalent group, or a salt thereof which have an excellent antitumor activity.
<sup>13</sup>C- and <sup>15</sup>N-Isotope Analysis of Desphenylchloridazon by Liquid Chromatography–Isotope-Ratio Mass Spectrometry and Derivatization Gas Chromatography–Isotope-Ratio Mass Spectrometry
作者:Aileen Melsbach、Violaine Ponsin、Clara Torrentó、Christina Lihl、Thomas B. Hofstetter、Daniel Hunkeler、Martin Elsner
DOI:10.1021/acs.analchem.8b04906
日期:2019.3.5
chromatography–isotope-ratio massspectrometry (LC-IRMS) and derivatizationgas chromatography–IRMS (GC-IRMS), respectively. Injecting standards directly onto an Atlantis LC-column resulted in reproducible δ13C-isotope analysis (standard deviation <0.5‰) by LC-IRMS with a limit of precise analysis of 996 ng of DPC on-column. Accurate and reproducible δ15N analysis with a standard deviation of <0.4‰
Cyclisation reactions of some pyridazinylimidoylketenes
作者:Alexander P. Gaywood、Lawrence Hill、S. Haider Imam、Hamish McNab、Gabor Neumajer、William J. O’Neill、Péter Mátyus
DOI:10.1039/b9nj00474b
日期:——
Flash vacuum pyrolysis (FVP) of aminopyridazinone derivatives of Meldrum’s acid at 600 °C (0.02 Torr) results in generation of an imidoylketene intermediate followed by cyclisation. In the case of the 5-amino derivatives, the products are pyrido[2,3-d]pyridazines, whereas the 4-amino compounds lead to mixtures of pyrido[2,3-d]pyridazines and pyrrolo[3,2-c]pyridazines. The feasibility of the 1,5-sigmatropic
闪蒸真空热解(FVP) 氨基哒嗪酮Meldrum酸的衍生物在600°C(0.02 Torr)的条件下会生成亚氨基酮基中间体,然后环化。在5-氨基衍生物的情况下,产物是吡啶并[2,3- d ]哒嗪,而4-氨基化合物导致了吡啶并[2,3- d ]哒嗪和吡咯并[3,2- c ]的混合物]哒嗪。相应的相应反应可支持形成两个吡啶并[2,3- d ]哒嗪所需的氯原子的1,5-σ位移的可行性。2,6-二氯苯胺衍生物。模型化合物的FVP反应中的相关过程和DFT计算支持了形成吡咯并[3,2- c ]哒嗪所需的脱羧机理的可行性。
Beljean,M.; Pays,M., Bulletin de la Societe Chimique de France, 1973, p. 3324 - 3330
作者:Beljean,M.、Pays,M.
DOI:——
日期:——
Konecny, Vaclav; Kovac, Stefan; Varkonda, Stefan, Collection of Czechoslovak Chemical Communications, 1985, vol. 50, # 2, p. 492 - 502