51670-51-0Relevant academic research and scientific papers
Method for synthesizing 1,2-naphthoquinone and derivatives thereof
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Paragraph 0029; 0030; 0031; 0032; 0033; 0034; 0035-0044, (2019/03/26)
The present invention provides a method of synthesizing 1,2-naphthoquinone and derivatives thereof. The synthesis method takes an o-alkynyl chalcone compound represented by a formula (I) as an initialsubstance, ferric chloride or ferric nitrate as a catal
The 3-substitution of naphthalene-1,2-diones with boronic acids: A C-H functionalization approach to novel spirooxazine photochromics
York, Mark
supporting information; experimental part, p. 2226 - 2230 (2012/05/20)
The addition of alkyl and aryl boronic acids to naphthalene-1,2-diones in the presence of an excess of ammonium persulfate and catalytic silver nitrate to yield 3-functionalized naphthalene-1,2-diones is reported. The products of these reactions were then
Studies on the chemistry of 2-(2-oxo-3-phenylpropyl)-benzaldehydes: Novel total synthesis of 3-phenylnaphthalen-2-ols and 2-hydroxy-3-phenyl-1,4- naphthoquinones
Martínez, Ana,Fernández, Marcos,Estévez, Juan C.,Estévez, Ramón J.,Castedo, Luis
, p. 485 - 492 (2007/10/03)
We describe the first studies on the chemistry of 2-(2-oxo-3-phenylpropyl) benzaldehydes, which were converted into 3-benzylisochromen-1-ones via the corresponding 2-(2-oxo-3-phenylpropyl)benzoic acid. The 2-(2-oxo-3-phenylpropyl) benzaldehydes proved to be convenient starting materials for the synthesis of 3-phenyl-2-naphthols. Oxidation of the latter compounds resulted in a novel, efficient synthesis of 3-phenyl-1,2-naphthoquinones, which were efficiently transformed into 2-hydroxy-3-phenyl-1,4-naphthoquinones.
A New Synthesis of ortho-Quinones by Transition-Metal-Mediated Oxygenation of Phenols with tert-Butylhydroperoxide and the Mimoun Oxodiperoxo Molybdenum Complex * Py * HMPT
Krohn, Karsten,Rieger, Hagen,Khanbabaee, Karamali
, p. 2323 - 2330 (2007/10/02)
A specific oxygenation of phenols to ortho-quinones can be effected by a combination of the transition metal complexes Ti(OiPr)4, VO(acac)2, Zr(acac)4, Zr(OnPr)4 and tert-butylhydroperoxide (TBHP) or * Py * HMPT.Naphthols, anthracenols, phenanthrols and donor substituted mononuclear phenols are readily converted into the corresponding 1,2-quinones.Unhindered ortho-naphthoquinones can yield binaphthyls with unreacted starting material by Michael addition. - Key Words: ortho-Quinones / tert-Butyl hydroperoxide / Phenols, oxygenation
Quinones. Part 11. The Reaction of o-Aminothiophenol with o-Benzo- and o-Naphtho-quinones: A New Route to 1H-Phenothiazin-1-ones
Mackenzie, Neil E.,Surendrakumar, Sivagnanasundram,Thomson, Ronald H.,Cowe, Heather J.,Cox, Philip J.
, p. 2233 - 2242 (2007/10/02)
1H-Phenothiazin-1-ones can be obtained by the condensation of o-aminothiophenol with 3,5-di-t-butyl- and 3-t-butyl-5-phenyl-o-benzoquinones.In the absence of large blocking groups the phenothiazinones are unstable.A methyl group at C-4 leads via the quinone-methide tautomer, to formation of a spiro-dimer the crystal structure of which was determined by X-ray analysis.By further reaction with o-aminothiophenol, 1H-phenothiazin-1-ones yield triphenodithiazines (benzothiazinophenothiazines). o-Naphthoquinones do not form benzo-1H-phenothiazin-1-ones with o-aminothiophenol.The parent compound yields 4-hydroxy-3H-benzophenothiazin-3-one by initial thiol addition at C-4 followed by rearrangement.
