41426-37-3

Usage

InChI:InChI=1/C13H14O2/c1-9(2)15-13-8-7-12(14)10-5-3-4-6-11(10)13/h3-9,14H,1-2H3

Upstream product

• 571-60-8 1,4-Dihydroxynaphthalene 
• 67-63-0 isopropyl alcohol 
• 130-15-4 [1,4]naphthoquinone 
• 58851-76-6 4-acetyloxy-5,8-dihydronaphthalen-1-yl acetate 
• 5697-00-7 1,4-diacetoxynaphthalene 
• 33577-96-7 methyl 2-(2-hydroxy-2-methyl-3-butyn-4-yl)benzoate 
• 33577-99-0 2-ethynyl-benzoic acid methyl ester 
• 610-94-6 2-bromobenzoic acid methyl ester 
• 142458-70-6 2-ethynyl-α-diazoacetophenone 

Relevant academic research and scientific papers

Ambipolar transistor properties of 2,2′-binaphthosemiquinones

Binaphthosemiquinones are proved to show ambipolar transistor properties. These compounds have characteristic blue colors owing to the small energy gaps, because the quinone part acts as an electron acceptor and the alkoxy group acts as an electron donor. Accordingly, these molecules have an analogous electronic structure to indigo. The crystal structure changes depending on the alkoxy groups, though these compounds generally have stacking structures.

One step hair coloring compositions using salts

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

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

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.

Rhodium Carbenoid Mediated Cyclizations of o-Alkynyl-Substituted α-Diazoacetophenones

o-Alkynyl-substituted α-diazoacetophenones undergo facile cyclization to indenone derivatives upon treatment with catalytic quantities of Rh(II) carboxylates.A variety of structural influences were encountered by varying the nature of the substituent group attached to the alkyne carbon atom.The cyclization reaction involves addition of a rhodium stabilized carbenoid onto the acetylenic ?-bond to generate a vinyl carbenoid.The vinyl carbenoid was found to undergo both CH and CC migration as well as δ-CH insertion into the alkyl backbone.Different catalysts were shown to result in significant variation in the product ratios for these reactions.Treatment of o-(5-(allyloxy)-1-pentynyl)-α-diazoacetophenone with rhodium(II) mandelate afforded 2-(2-propen-1-yl)-2-(1-oxo-1H-indenyl)-2,3,4,5-tetrahydrofuran in high yield.The formation of this compound involves initial formation of a vinyl carbenoid which reacts with the neighboring oxygen atom to give an oxonium ylide which subsequently undergoes a 2,3-sigmatropic rearrangement.When 2-ethynyl-α-diazoacetophenone is used, only products derived from 6-endo closure are observed.Substituted o-alkynyl α-diazoacetophenones give products derived from 5-exo cyclization.The mode of ring closure is controlled by both steric and electronic factors.

Dimeric Naphthoquinones, II. - Simple and Regioselective Synthesis of Naphthoquinol Monoalkyl Ethers via 2,3-Dihydronaphthoquinones

On catalysis of hydrogen chloride or thionyl chloride, 1,4-naphthalenediole (2a) reacts with primary or secundary alcohols via the tautomeric 2,3-dihydronaphthoquinone (9) to give naphthoquinol monoalkyl ethers 2b-n in high yields.The influence of the substitution pattern on the regioselectivity of the reaction has been investigated.