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[citation needed] Most commonly malononitrile is produced by the gas-phase reaction of acetonitrile and cyanogen chloride: [4] NCCl + CH 3 CN → NCCH 2 CN + HCl. About 20,000,000 kg are produced annually (2007). Important outlets include the synthesis of thiamine, the drug triamterene and minoxidil, and the dyes disperse Yellow 90 and disperse ...
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.
It was identified as the tetramer (HCN) 4 by ebullioscopy in 1923. [4] 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).
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.
Methyl yellow, or C.I. 11020, is an organic compound with the formula C 6 H 5 N 2 C 6 H 4 N(CH 3) 2. It is an azo dye derived from dimethylaniline. It is a yellow solid. According to X-ray crystallography, the C 14 N 3 core of the molecule is planar. [3] It is used as a dye for plastics and may be used as a pH indicator.
Aniline Yellow is a yellow azo dye and an aromatic amine.It is a derivative of azobenzene.It has the appearance of an orange powder. Aniline Yellow was the first azo dye. it was first produced in 1861 by C. Mene.
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]
Tetramethylsuccinonitrile or TMSN is an organic compound with the formula (C(CH 3) 2 CN) 2, classified as a dinitrile, and a colorless and odorless solid derived from 2,2'-azobis-isobutyronitrile, a common radical initiator in the manufacture of PVC: [(CH 3) 2 C(CN)] 2 N 2 → [(CH 3) 2 C(CN)] 2 + N 2. [6]