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Ethyl cyanoacetate is a building block for the synthesis of heterocycles which are used for example as drugs: Allopurinol , used for the treatment of chronic gout, can be synthesized starting with a Knoevenagel condensation with triethyl orthoformate ; the condensation product is cyclized with hydrazine to give a substituted pyrazole and ...
Cyanoacetic acid is prepared by treatment of chloroacetate salts with sodium cyanide followed by acidification. [1] [2] Electrosynthesis by cathodic reduction of carbon dioxide and anodic oxidation of acetonitrile also affords cyanoacetic acid. [3] Cyanoacetic acid is used to do cyanoacetylation, first convenient method described by J. Slätt. [4]
The cyanoacrylate group in the monomer rapidly polymerizes in the presence of water to form long, strong chains. [ 1 ] Specific cyanoacrylates include methyl 2-cyanoacrylate (MCA), ethyl 2-cyanoacrylate (ECA, commonly sold under trade names such as "Super Glue" and "Krazy Glue"), n -butyl cyanoacrylate (n-BCA), octyl cyanoacrylate , and 2-octyl ...
In this reaction the carbonyl group is an aldehyde or a ketone. The catalyst is usually a weakly basic amine. The active hydrogen component has the forms: [3] Z−CH 2 −Z or Z−CHR−Z for instance diethyl malonate, Meldrum's acid, ethyl acetoacetate or malonic acid, or cyanoacetic acid. [1] Z−CHRR', for instance nitromethane.
Ethyl cyanoacrylate is prepared by the condensation of formaldehyde with ethyl cyanoacetate: NCCH 2 CO 2 C 2 H 5 + CH 2 O → H 2 C=C(CN)CO 2 C 2 H 5 + H 2 O. This exothermic reaction affords the polymer, which is subsequently sintered, thermally "cracked" to give the monomer. Alternatively, it can be prepared by the ethoxycarbonylation of ...
The reaction is normally catalyzed by a base. [3] Tris(cyanoethyl)phosphine is produced by the cyanoethylation of phosphine. [4] Cyanethylation is used to prepared numerous commercial chemicals. Detailed laboratory procedures are available for several variants of this reaction. Cyanoethylation of amines. [5] [6] Cyanoethylation of phosphines. [7]
While I know the vinegar to use for cleaning isn’t balsamic, raspberry, or red wine vinegar, I always thought white distilled vinegar (and occasionally apple cider vinegar), was cleaning vinegar ...
Cyanation of ketones or aldehydes yields the corresponding cyanohydrins, which can be done directly with the cyanide ion (the cyanohydrin reaction) or by using bisulfite, followed by displacement of sulfite: [3] [4] Cyanation of aldehyde with bisulfite. A related reaction is hydrocyanation, which installs the elements of H-CN.