25186-39-4Relevant academic research and scientific papers
METHOD OF PRODUCING DICHLOROQUINONE DERIVATIVE
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Paragraph 0026; 0027; 0030, (2019/08/23)
PROBLEM TO BE SOLVED: To provide a method of producing a dichloroquinone derivative which is versatile, easily applicable to an industrial process, and also advantageous in terms of production cost. SOLUTION: In a method of producing a dichloroquinone der
HIGH-AND LOW-POTENTIAL, WATER-SOLUBLE, ROBUST QUINONES
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Paragraph 00124, (2018/09/21)
Substituted hydroquinones, 1,4-quinones, catechols, 1,2-quinones, anthraquinones, and anthrahydroquinones are disclosed herein. The substituted hydroquinones and catechols have the formula: while the substituted 1,4-quinones or 1,2-have the corresponding oxidized structure (1,4- benzoquinones and 1,2-benzoquinones). One or more of R1, R2, R3 and R4 include a sulfonate moiety, a sulfonimide moiety, or a phosphonate moiety, and any of R1, R2, R3 and R4 that do not include one of these moieties include an alkyl, a cycloalkyl, a thioether, a sulfoxide, a sulfone, a haloalkyl, a halogen, a nitrile, an imide, a pyrazole, or combinations thereof. The substituted anthraquinones have the formula: while the substituted anthrahydroquinones have the corresponding reduced structure. One or more of R1-R8 have a sulfonate or phosphate tethered to the ring by a thi other, amine, or ether including one or more alkyl groups. Any of R1-R8 that do not contain one of these moieties include an alkyl, a cycloalkyl, a thiother, a sulfoxide, a sulfone, a haloalkyl, a halogen, a hydroxyl, an alkoxyl, an ether, an amine, or hydrogen The substituted hydroquinones, 1,4-quinones, catechols, 1,2-quinones, anthraquinones, or anthrahydroquinones are soluble in water, stable in aqueous acid solutions, and have useful reduction potentials in the oxidized form. Accordingly, they can be used as redox mediators in emerging technologies, such as in mediated fuel cells or organic-mediator flow batteries.
2,5-Dihydroxyterephthalates, 2,5-dichloro-1,4-benzoquinone-3,6- dicarboxylates, and polymorphic 2,5-dichloro-3,6-dihydroxyterephthalates
Hintermann, Lukas,Suzuki, Keisuke
experimental part, p. 2303 - 2306 (2009/04/06)
Reaction of 2,5-dihydroxycyclohexa-1,4-diene-1,4-dicarboxylates with one equivalent of N-chlorosuccinimide cleanly gives 2,5-dihydroxyterephthalates; reaction with four equivalents of N-chlorosuccinimide gives 2,5-dichloro-l,4- benzoquinone-3,6-dicarboxylates instead. The latter compounds react with sodium dithionite to give 2,5-dichloro-3,6-dihydroxyterephthalates, which will find use in the study of polymorphic phase changes. Georg Thieme Verlag Stuttgart.
Spectroscopic Studies of the Thermal Rearrangement Reaction of Dimethyl 3,6-Dichloro-2,5-dihydroxyterephthalate in the Solid State
Swiatkiewicz, Jacek,Prasad, Paras N.
, p. 6913 - 6918 (2007/10/02)
The thermal rearrangement of the yellow (Y) isomer of dimethyl 3,6-dichloro-2,5-dihydroxyterephthalate in the solid state, which yields a white (W) isomer, has been investigated by a combination of Raman phonon spectroscopy and electronic emission spectro
