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It was first prepared by Robert Evert and Victor Merz in 1876 by hydrolysis of 2,6-dicyanonaphthalene. [2] [3] 1,8-Naphthalenedicarboxylic acid can be isomerized to 2,6-naphthalenedicarboxylic acid via the intermediacy of the dipotassium dicarboxylates. [2] It is also produced by oxidation of 2,6-diisopropylnaphthalene. [4]
[1] 1-Naphthalenethiol can also be prepared from 1-bromonaphthalene by Pd-catalyzed reaction with the silylthiolate i Pr 3 SiSK followed by hydrolysis of the silathioether. [2] It was first prepared from the Grignard reagent generated from 1-bromonaphthalene. Treatment of that reagent with elemental sulfur followed by acidification gave the ...
2-Naphthalenethiol is an organosulfur compound with the formula C 10 H 7 SH. It is a white solid. It is a white solid. It is one of two mono thiols of naphthalene , the other being 1-naphthalenethiol .
[1] [5] Naphthylpropylaminopentane (NPAP) is a monoaminergic activity enhancer (MAE). [4] Some, such as 2-naphthylaminopropane and to a lesser extent 1-naphthylaminopropane , but not others, such as NPAP, are also variably potent monoamine oxidase inhibitors (MAOIs).
2,6-Dimethylnaphthalene is mainly used for the preparation of 2,6-naphthalenedicarboxylic acid by oxidation of 2,6-dimethylnaphthalene in the liquid phase. 2,6-Naphthalenedicarboxylic acid is a monomer for the production of high-performance polymers, in particular poly (ethylene-2,6-naphthalene dicarboxylate) or shorter polyethylene naphthalate (PEN). [4]
The resulting materials have rigidly planar, highly conjugated cores. They exhibit good processing characteristics for fabrication of soft electronic devices. Aside from the NDIs, other members include the diimide derivatives of perylene-3,4:9,10-tetracarboxylic dianhydride and terrylene-3,4:11,12-tetracarboxylic dianhydride. [4]
Sample containing nitrite ions is first neutralized and then treated with dilute hydrochloric acid at 0 - 5 °C to give nitrous acid. Then an excess but fixed volume of sulfanilamide and N -(1-naphthyl)ethylenediamine dihydrochloride solution is added.
[4] [2] In the context of lubrication, alkylated naphthalenes are considered Group V base oils by the American Petroleum Institute . [ 5 ] For 2020, demand for this class of base oil (that includes other types of Group V base oils) was estimated at 823,000 tonnes per year. [ 4 ]