75445-67-9Relevant articles and documents
Boron-selective biaryl coupling approach to versatile dibenzoxaborins and application to concise synthesis of defucogilvocarcin M
Sumida, Yuto,Harada, Ryu,Kato-Sumida, Tomoe,Johmoto, Kohei,Uekusa, Hidehiro,Hosoya, Takamitsu
supporting information, p. 6240 - 6243 (2015/01/09)
An efficient synthetic method for versatile dibenzoxaborins based on boron-selective Suzuki-Miyaura cross-coupling between o-borylphenols and aryl halides or triflates bearing a 1,8-diaminonaphthalene-protected o-boryl group is reported. A short synthesis
A xanthate-based free radical approach to defucogilvocarcin M
Cortezano-Arellano, Omar,Cordero-Vargas, Alejandro
supporting information; experimental part, p. 602 - 604 (2010/04/05)
A formal total synthesis of the aglycon of gilvocarcin M is described. The synthesis is based on the construction of the key naphthalene 7 via a free radical addition-cyclization protocol followed by aromatization of the resulting α-tetralone. This highly
One step hair coloring compositions using salts
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, (2008/06/13)
A hair coloring composition comprising the following two compositions which are mixed just prior to application to the hair: (a) a composition comprising a water-soluble peroxygen oxidizing agent; and (b) a composition comprising one or more oxidative hair coloring agents selected from the group consisting of an aromatic diamine, an amino phenol, a naphthol, a polyhydric phenol, a catechol and mixtures thereof; wherein the composition comprising one or more oxidative hair coloring agents further comprises al least one water soluble carbonate releasing salts; and optionally a water soluble ammonium salt, is described.
Enhanced color deposition for hair with sequestering agents
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, (2008/06/13)
Hair coloring compositions which comprise: (A) non-nitrogenous chelating agents from the group consisting of polyphosphate; phosphonates; hydroxycarboxylates; polyacrylates; zeolite; and mixtures thereof; (B) an oxidative dye primary intermediate; and (C) an oxidative dye coupler; (D) and water are described. The present invention also relates to a method for coloring hair which comprises contacting said hair with a hair coloring composition as described above.
Process for the two-stage oxidation dyeing of keratin fibers with a manganese complex or salt and a 4-substituted 1-naphthol, and dyeing kit
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, (2008/06/13)
A process for the two-stage oxidation dyeing of keratin fibers by applying to the keratin fibers: in a first stage, at least one composition A containing at least one manganese salt and/or a manganese complex, in a second stage, at least one composition B having a pH of greater than or equal to 6, and resulting from the extemporaneous mixing of at least one composition B1 containing at least one 4-substituted 1-naphthol and at least one composition B2 containing at least one oxidizing agent, and corresponding multi-compartment dyeing kit.
New efficient protocol for aryne generation. Selective synthesis of differentially protected 1,4,5-naphthalenetriols
Matsumoto, Takashi,Hosoya, Takamitsu,Katsuki, Miyoko,Suzuki, Keisuke
, p. 6735 - 6736 (2007/10/02)
Arynes are generated cleanly and rapidly by halogen-lithium exchange of ortho-haloaryl triflates with n-BuLi at -78°C. [2+4]-Cycloaddition of α-alkoxyaryne with 2-methoxyfuran proceeded regioselectively (head-to-head) to afford 1,4,5-naphthalenetriols.
A concise total synthesis of the aglycone of the gilvocarcins
Deshpande, Prashant P.,Martin, Olivier R.
, p. 6313 - 6316 (2007/10/02)
A brief and convergent synthesis of the aglycone of the gilvocarcins M and E (and formally V) involving, in the key step, a Pd-mediated intramolecular biaryl coupling, is reported.
Dimeric Naphthoquinones, IV1). - Synthesis of Biramentaceone, Mamegakinone and Rotundiquinone
Laatsch, Hartmut
, p. 1321 - 1347 (2007/10/02)
Mamegakinone (8a), biramentaceone (12a), 3,3'-bijuglone (8b), 2,2-bijuglone (12b) and their methyl ethers were prepared by oxidative coupling of substituted 4-methoxy-1-naphthols; indigoids like 24 are intermediates.Cooxidation of the isomeric dimethoxy-1