“1,5-Dihydroxynaphthalene”的意思、由来-开放百科全书

词条

1,5-Dihydroxynaphthalene

释义

Preparation and use
References

{{Chembox
| ImageFile = 1,5-Naphthalenediol.png
| ImageSize = 150px
| ImageAlt =
| IUPACName = Naphthalene-1,5-diol
| OtherNames = Azurol; 1,5-Naphthalenediol
|Section1={{Chembox Identifiers
| CASNo = 83-56-7
| PubChem = 6749
| ChemSpiderID = 6492
| SMILES = c1cc2c(cccc2O)c(c1)O
| InChI = 1/C10H8O2/c11-9-5-1-3-7-8(9)4-2-6-10(7)12/h1-6,11-12H
| InChIKey = BOKGTLAJQHTOKE-UHFFFAOYAJ
| StdInChI = 1S/C10H8O2/c11-9-5-1-3-7-8(9)4-2-6-10(7)12/h1-6,11-12H
| StdInChIKey = BOKGTLAJQHTOKE-UHFFFAOYSA-N
}}
|Section2={{Chembox Properties
| C=10 | H=8 | O=2
| Appearance = Colorless solid
| Density =
| MeltingPtC = 259-261
| BoilingPt =
| Solubility = }}
|Section3={{Chembox Hazards
| MainHazards =
| FlashPt =
| AutoignitionPt = }}
}}

1,5-Dihydroxynaphthalene is an organic compound with the formula C{{sub|10}}H{{sub|6}}(OH){{sub|2}}. It is one of several isomers of dihydroxynaphthalene. It exists as colorless crystals that are soluble in polar organic solvents. It is a precursor to certain dyes.

Preparation and use

1,5-Dihydroxynaphthalene is prepared from naphthalene-1,5-disulfonic acid by hydrolysis with strong base followed by acidification.

It couples with various aryl diazonium salts to give diazo dyes. Oxidation with chromium trioxide gives juglone, a naturally occurring dye.^[1]

References

1. ^{{cite encyclopedia|author=Gerald Booth|title=Naphthalene Derivatives|encyclopedia=Ullmann's Encyclopedia of Industrial Chemistry|year=2005|publisher=Wiley-VCH|place=Weinheim|doi=10.1002/14356007.a17_009}}.

2 : 1-Naphthols|Diols

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