2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-Mediated C(<i>sp</i>
<sup>2</sup>
)-C(<i>sp</i>
<sup>3</sup>
) Cross-Dehydrogenative Coupling Reaction: α-Alkylation of Push-Pull Enamines and α-Oxo Ketene Dithioacetals
作者:Dongping Cheng、Lijun Wu、Zhiteng Deng、Xiaoliang Xu、Jizhong Yan
DOI:10.1002/adsc.201700853
日期:2017.12.19
A novel, metal‐free cross‐dehydrogenativecoupling (CDC) reaction of C(sp2)–H bonds of enamines and α‐oxo ketene dithioacetals with C(sp3)–H bonds of 1,3‐diarylpropenes mediated by 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) is reported. The α‐alkylation products are obtained with moderate to good yields. The method provides an efficient and alternative strategy for the synthesis of the corresponding
[EN] BENZENE SULFONAMIDES AS CCR9 INHIBITORS<br/>[FR] BENZÈNE-SULFONAMIDES À TITRE D'INHIBITEURS DE CCR9
申请人:NORGINE BV
公开号:WO2015097122A1
公开(公告)日:2015-07-02
The present invention relates to compounds useful as CCR9 modulators, to compositions containing them, to methods of making them, and to methods of using them. In particular, the present invention relates to compounds capable of modulating the function of the CCR9 receptor by acting as partial agonists, antagonists or inverse agonists. Such compounds may be useful to treat, prevent or ameliorate a disease or condition associated with CCR9 activation, including inflammatory and immune disorder diseases or conditions such as inflammatory bowel diseases (IBD).
Orthoesters, cyanoacetic acid and secondary amines react together, in a one step procedure, to produce ß-cyanoenamines.
正酯、氰乙酸和二级胺在一步法过程中反应,生成β-氰基烯胺。
Synthesis and chemical reactivity of 3-oxo-2-arylhydrazono-propanenitriles
作者:Sanaa O. Abdallah、Nadia H. Metwally、Hany F. Anwar、Mohamed H. Elnagdi
DOI:10.1002/jhet.5570420506
日期:2005.7
prepared via reacting enaminonitrile 2b,c with aromaticdiazoniumsalts. These reacted with phenylhydrazine to yield bis hydrazones that were converted to arylazopyr-azoles via a novel Vilsmeier-Haack reaction type. Reaction of 6c with hydroxylamine afforded oxime that could be successfully cyclised into arylazoisoxazole. Reaction of 6c with hydrazine hydrate to yield arylazoamino-pyrazole that proved
Studies on enaminonitriles: A new synthesis of 1,3-substituted pyrazole-4-carbonitrile
作者:Said Ahmed Soliman Ghozlan、Ismail Abdelshafy Abdelhamid、Mohamed Hilmy Elnagdi、Hatem Moustafa Gaber
DOI:10.1002/jhet.5570420623
日期:2005.9
1-p-chlorophenylpyrazole-4-carbonitrile (5a) condensed with hydrazine hydrate to yield the bishydrazone 10 and with dimethylformamide dimethylacetal to yield 1-aryl-3-(3-dimethylamino)acryloyl pyrazole-4-carbonitrile (11). This enamine reacts with hydrazine hydrate to yield the pyrazolylpyrazole (12) and with naphthoquinone to yield the 3-naphthofuranoyl pyrazole 13. The pyra-zolyl pyridine derivative 14
3-二乙基氨基丙烯腈(1)与酰肼卤化物(2a-d)反应,得到1,3-二取代的吡唑-4-腈5a-d。乙酰1- p -chlorophenylpyrazole -4-甲腈(5a中与水合肼缩合),得到双腙10和二甲基甲酰胺二甲基缩醛,得到1-芳基-3-(3-二甲基氨基)丙烯酰基吡唑-4-甲腈(11)。该烯胺与水合肼反应,生成吡唑基吡唑(12),与萘醌反应,生成3-萘呋喃酰基吡唑13。对吡唑-唑基吡啶衍生物14进行如下处理。在乙酸铵存在下用乙酰丙酮11。化合物11被加上p -chlorobenzene氯化重氮,得到腙16,将其用还耦合p -chlorobenzenediazonium酰氯,得到的甲簪18。