Acetonitrile Derivatives as Carbonyl Synthons. One-Pot Preparation of Diheteroaryl Ketones via a Strategy of Sequential S<sub>N</sub>Ar Substitution and Oxidation
作者:Zhiwei Yin、Zhongxing Zhang、John F. Kadow、Nicholas A. Meanwell、Tao Wang
DOI:10.1021/jo030234b
日期:2004.2.1
addition of sodium peroxide and aqueous NH4OAc solution effected oxidation to afford aryl heteroaryl ketones in good yields. Aryl acetonitrile derivatives are thus umpolung-type synthons of the corresponding aryl carbonyl functionality.
2-芳基乙腈衍生物的阴离子与各种杂芳基氯化物或溴化物在S N Ar歧管中反应,得到易于氧化的中间阴离子。加入过氧化钠和NH 4 OAc水溶液进行氧化,以高收率得到芳基杂芳基酮。因此,芳基乙腈衍生物是相应的芳基羰基官能度的umpolung型合成子。
Synthesis, Cytotoxic, and Antitumor Activities of 2-Pyridylhydrazones Derived from 3-Benzoylpyridazines
作者:Johnny Easmon、Gerhard Pürstinger、Gottfried Heinisch、Hans H. Fiebig、Thomas Roth、Johann Hofmann
DOI:10.1002/ardp.201400137
日期:2014.8
A series of 2‐pyridylhydrazones derivedfrom phenyl‐pyridazin‐3‐yl‐methanones were prepared in search for potential novel antitumor agents. The stereochemistry of these compounds was established by means of NMR spectroscopy. Whereas hydrazones derivedfrom 3‐benzoylpyridazines (IC50 = 0.99–8.74 µM) inhibited the proliferation of the tumor cell lines tested, the non‐fully aromatic 3‐benzoylpyridazinone
A convenient approach to aryl 3-pyridazinyl ketones 4, 7-10 bearing various O-, N-, or C-substituents at C-6 of the diazine nucleus viaoxidativedecyanation of appropriate aryl-heteroaryl-acetonitriles is proposed.