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Knoevenagel

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Knoevenagel
Knoevenagel Chem. (ˈknœvənɑːgəl) The name of Emil Knoevenagel (1865–1921), German chemist, used attrib. and occas. in the possessive to designate various reactions in organic chemistry, esp. the reaction between an aldehyde or ketone and malonic acid or a related compound containing active hydrogen,... Oxford English Dictionary
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Emil Knoevenagel
Heinrich Emil Albert Knoevenagel (18 June 1865 – 11 August 1921) was the German chemist who established the Knoevenagel condensation reaction. The Knoevenagel condensation reaction of benzaldehydes with nitroalkanes is a classic general method for the preparation of nitroalkenes, which are very wikipedia.org
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Knoevenagel condensation
In organic chemistry, the Knoevenagel condensation () reaction is a type of chemical reaction named after German chemist Emil Knoevenagel. The Hantzsch pyridine synthesis, the Gewald reaction and the Feist–Benary furan synthesis all contain a Knoevenagel reaction step. wikipedia.org
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piperidine
piperidine Chem. (pɪˈpɛrɪdiːn, formerly pɪˈpɛrɪdaɪn) [First formed as F. piperidine (A. Cahours 1853, in Ann. de Chim. et de Phys. XXXVIII. 78), f. L. piper pepper + -ide + -ine5.] ‘A volatile base (C5H11N) produced by the action of alkalis on piperine’ (Watts). Formerly also piperidia.1854 Jrnl. Ch... Oxford English Dictionary
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Profadol
Synthesis The Knoevenagel condensation between 3'-Methoxybutyrophenone [21550-06-1] and Ethyl cyanoacetate gives (1). wikipedia.org
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Gewald reaction
The first step is a Knoevenagel condensation between the ketone (1) and the α-cyanoester (2) to produce the stable intermediate 3. wikipedia.org
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Triazabicyclodecene
It catalyzes a variety of reactions including Michael reactions, Henry reactions (nitroaldol reactions), transesterification reactions, and Knoevenagel wikipedia.org
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亚苄基
多种反应可以用于制备含亚苄基的化合物，如苯甲醛和活泼亚甲基化合物的Knoevenagel缩合反应。 参考文献 参见 苄基 亚甲基 取代基 wikipedia.org
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Phenyl-2-nitropropene
These are named after the German chemist Emil Knoevenagel, and the Belgian chemist Louis Henry, respectively. Many of these Knoevenagel condensations were used by Dr. wikipedia.org
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Iminocoumarin
Iminocoumarins can be formed by a variation of the Knoevenagel condensation by reaction of salicylaldehyde with substituted acetonitriles. wikipedia.org
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克脑文盖尔缩合反应
Knoevenagel缩合反应（尔文格反应；克诺维那盖尔缩合反应；柯诺瓦诺格反应；克尔文盖尔缩合反应），又称Knoevenagel反应 含有活泼亚甲基的化合物与醛或酮在弱碱催化下，发生失水缩合生成α,β-不饱和羰基化合物及其类似物。 这便是现今所看到的 Knoevenagel 反应的雏形，缩合产物苄叉（或烷叉）乙酰乙酸乙酯也被称为 Knoevenagel 产物。但实际上，Claisen 等早在十余年前就已经通过其他方法得到该类型的化合物了， 只不过 Knoevenagel 所用的方法和条件更温和一些而已。 wikipedia.org
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Hagemann's ester
Knoevenagel's approach Soon after Hagemann, Emil Knoevenagel described a modified procedure to produce the same intermediate diethyl ester of 2,4-diacetyl wikipedia.org
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丙二酸二异丙酯
它可以发生Knoevenagel缩合反应。 参考文献 丙二酸酯 异丙酯 wikipedia.org
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Feist–Benary synthesis
The first step in the ring synthesis is related to the Knoevenagel condensation. wikipedia.org
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4-硝基亚苄基丙二腈
它可由4-硝基苯甲醛和丙二腈的Knoevenagel缩合反应制得。它和次氯酸钙反应，可以得到2,2-二氰基-3-(4-硝基苯基)环氧乙烷。 参考文献 硝基苯 丙二腈 wikipedia.org
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