Search results
Results from the WOW.Com Content Network
Malononitrile is an organic compound nitrile with the formula CH 2 (CN) 2. It is a colorless or white solid, although aged samples appear yellow or even brown. It is a colorless or white solid, although aged samples appear yellow or even brown.
The cis-configuration of the amino groups was shown in 1928 through reaction with glyoxal to give 2,3-diaminopyrazine, and the full structure was shown in 1955 to be diaminomaleonitrile, as opposed to the isomeric aminoiminosuccinonitrile (AISN). [5] It can be prepared by cyanation of aminomalonitrile. [6] [7]
Like most azobenzenes, Solvent Yellow 7 can be synthesized by the reaction of the phenyldiazonium salt with phenol.The optimal pH value for this azo coupling is 8.5-10. The reaction is carried out in water, since sodium chloride (or potassium chloride) formed in the reaction is soluble in water, while the product precipitates.
Carbonyl cyanide m-chlorophenyl hydrazone (CCCP; also known as [(3-chlorophenyl)hydrazono]malononitrile) is a chemical inhibitor of oxidative phosphorylation. It is a nitrile , hydrazone and protonophore .
As a safe cyanide-donor reagent [10] Nucleophilic attack at the ester group, as part of acyl substitution: reaction with ammonia leads to cyanoacetamide, which can be converted by dehydration with PCl 5 or POCl 3 to malononitrile. [11] Via the acidic methylene group as a nucleophile
TCNE is prepared by brominating malononitrile in the presence of potassium bromide to give the KBr-complex, and dehalogenating with copper. [1] Oxidation of TCNE with hydrogen peroxide gives the corresponding epoxide, which has unusual properties. [2] In the presence of base, TCNE reacts with malononitrile to give salts of pentacyanopropenide: [3]
Oil Red O (Solvent Red 27, Sudan Red 5B, C.I. 26125, C 26 H 24 N 4 O) is a lysochrome (fat-soluble dye) diazo dye used for staining of neutral triglycerides and lipids on frozen sections and some lipoproteins on paraffin sections.
Sodium maleonitriledithiolate is the chemical compound described by the formula Na 2 S 2 C 2 (CN) 2. The name refers to the cis compound, structurally related to maleonitrile ((CH(CN)) 2). Maleonitriledithiolate is often abbreviated mnt. It is a "dithiolene", i.e. a chelating alkene-1,2-dithiolate.