5-methyl-3-phenylcinnoline 、 二氧化硒 在
silica gel 作用下,
以
萘 为溶剂,
反应 6.0h,
以After chromatography on silica gel, 0.75 g (43%) of the title compound is obtained的产率得到3-phenyl-5-cinnolinecarboxaldehyde
参考文献:
名称:
4-cinnolinyl- and 4-naphthyridinyl-dihydropyridines, processes for their
Copper-Catalyzed Aerobic Dehydrogenative Cyclization of N-Methyl-N-phenylhydrazones: Synthesis of Cinnolines
作者:Guangwu Zhang、Jinmin Miao、Yan Zhao、Haibo Ge
DOI:10.1002/anie.201204339
日期:2012.8.13
The title reaction proceeds through an oxidation/cyclization sequence, thus representing the first copper‐catalyzed coupling reaction of hydrazones through a CH bond functionalization process (see scheme; DMF=N,N′‐dimethylformamide, Py=pyridine). The method provides an environmentally friendly and atom‐efficient approach to biologically active cinnoline derivatives.
O 2 占主导地位:标题反应按氧化/环化顺序进行,因此代表through通过CH键官能化过程进行的首次铜copper偶联反应(请参阅示意图; DMF = N,N'-二甲基甲酰胺,Py =吡啶)。该方法为生物活性的cinnoline衍生物提供了一种环境友好且原子效率高的方法。
Neue 4-Cinnolinyl- und 4-Naphthyridinyl-dihydropyridine, Verfahren zur ihrer Herstellung und ihre Verwendung in Arzneimitteln
申请人:BAYER AG
公开号:EP0555657A1
公开(公告)日:1993-08-18
Die Erfindung betrifft neue 4-Cinnolinyl- und 4-Naphthyridinyl-dihydropyridine der allgemeinen Formel I
in welcher R¹ bis R⁵ die in der Beschreibung angegebene Bedeutung haben, Verfahren zu ihrer Herstellung und ihre Verwendung in Arzneimitteln, insbesondere in Mitteln mit positiv inotroper Wirkung.
本发明涉及通式 I 的新型 4-噌啉基和 4-萘啶基二氢吡啶
中 R¹ 至 R⁵ 的含义、其制备工艺及其在药物中的用途,特别是在具有正性肌力作用的制剂中的用途。
US5364855A
申请人:——
公开号:US5364855A
公开(公告)日:1994-11-15
Copper-Catalyzed Aerobic Annulation of Hydrazones: Direct Access to Cinnolines
A novel method was developed for the construction of biologically active poly-substituted cinnolines from easily accessible hydrazones in good to excellent yields. A simple copper catalyst could efficiently promote C−N bond formation through selective C−H functionalization and dehydrogenative amination. Furthermore, the inert C−Heteroatom (O/F/N) bonds are susceptible to cleavage in high selectivity
开发了一种新颖的方法,用于以易于获得的azo为原料,以良好或优异的产率构建具有生物活性的多取代cinnolines。一个简单的铜催化剂可以通过选择性的CH功能化和脱氢胺化有效地促进C N键的形成。此外,在新开发的好氧环化反应中,惰性C-杂原子(O / F / N)键易于以高选择性裂解,而不是保留完整的替代C-H键。
4-cinnolinyl- and 4-naphthyridinyl-dihydropyridines, processes for their
申请人:Bayer Aktiengesellschaft
公开号:US05364855A1
公开(公告)日:1994-11-15
The invention relates to new 4-cinnolinyl- and 4-naphthyridinyl-dihydropyridines of the general formula I ##STR1## in which R.sup.1 to R.sup.5 have the meaning given in the description, to processes for their preparation and to their use in medicaments, in particular in compositions having positively inotropic action.