- Construction of new fluorophores by Diels-Alder reaction of diacenaphthothiophenes
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The Diels–Alder (DA) reaction of diacenaphtheno[1,2-b;1′,2′-d]thiophene (1a) with benzyne affords 1:1 and 1:2 adducts, 7 and 8, in 47 and 11% yields. An X-ray crystallographic analysis reveals that 8 possesses a dibenzobarrelene structure involving a rigi
- Yamamoto, Yuma,Fukuoka, Yoshiaki,Nishida, Jun-ichi,Kitamura, Chitoshi,Kawase, Takeshi
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- THE ADDITION OF BENZYNE TO AZULENE
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The title reaction afforded the Diels-Alder adduct 4b,10-etheno-benzazulene (4), while an analogous reacton involving 5,6-dichloroazulene gave the 6,7- and 7,8-dichloro-derivatives of (4).Treatment of (4) with 3,6-di(pyridin-2-yl)-s-tetrazine yielded b
- Cresp, Terry M.,Wege, Dieter
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- Application of deuterated THENA for assigning the absolute configuration of chiral secondary alcohols
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The structure of a constrained bicyclic chiral derivatizing agent (CDA), 1,2,3,4-tetrahydro-1,4-epoxynaphthalene-1-carboxylic acid, THENA 1, was modified by replacing both exo-methylene protons with deuterium atoms. The modified CDA, THENA-d2 2
- Soponpong, Jakapun,Dolsophon, Kulvadee,Thongpanchang, Chawanee,Linden, Anthony,Thongpanchang, Tienthong
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- Internal and external stereoisomers of squaraine rotaxane endoperoxide: Synthesis, chemical differences, and structural revision
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Photooxygenation of permanently interlocked squaraine rotaxanes with anthracene-containing macrocycles produces the corresponding squaraine rotaxane endoperoxides (SREPs) quantitatively. SREPs are stored at low temperature, and upon warming, they undergo
- Collins, Carleton G.,Lee, Joshua M.,Oliver, Allen G.,Wiest, Olaf,Smith, Bradley D.
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p. 1120 - 1130
(2014/03/21)
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- NOVEL ANTHRACENE DERIVATIVES AND ORGANIC ELECTRONIC DEVICE USING SAME
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The present invention provides a novel anthracene derivatives and an organic electronic device using the same. Thte organic electronic device according to the present invention shows excellent properties in terms of efficiency, a driving voltage, and a life span.
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Page/Page column 32-33
(2011/06/23)
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- DENDRITIC MOLECULAR INTRACELLULAR TRANSPORTERS AND METHODS OF MAKING AND USING SAME
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In accordance with the purpose(s) of the invention, as embodied and broadly described herein, the invention, in one aspect, relates to compounds comprising the structure: and at least one guanidinium residue, wherein m is zero or a positive integer. Also disclosed are methods of preparing the disclosed compounds. Also disclosed are methods of intracellular delivery comprising administering the disclosed compounds and compositions to a subject. Also disclosed are pharmaceutical compositions comprising a therapeutically effective amount of one or more compounds or compositions of the invention and a pharmaceutically acceptable carrier. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
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Page/Page column 100
(2010/11/30)
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- Crystal Structure of the Explosive Parent Benzyne Precursor: 2-Diazoniobenzenecarboxylate Hydrate
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The structure of the highly unstable benzyne precursor 2-diazoniobenzenecarboxylate (3) has been determined by single-crystal X-ray diffraction.The structure is discussed in comparison to ab initio results for several conformers of 3, related aromatic dia
- Horan, Christopher J.,Barnes, Charles L.,Glaser, Rainer
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p. 243 - 250
(2007/10/02)
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- Diels-Alder Reactions of Vinylindoles with Aryne and 1,4-Benzoquinones: New Potential DNA Intercalators
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Diels-Alder reactions of 2- and 3-vinylindoles with aryne, 1,4-benzo- and 1,4-naphthoquinone lead to new six-ring annellated carbazoles.Molecular modeling studies predict that the compounds with coplanar framework are able to intercalate with the B-DNA.
- Pindur, Ulf,Pfeuffer, Ludwig,Eitel, Manfred,Rogge, Martina,Haber, Manfred
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p. 291 - 298
(2007/10/02)
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- THE INTERMOLECULAR BENZYNE CYCLOADDITION (IBC) APPROACH TO 7-SUBSTITUTED APORPHINOIDS.MECHANISTIC CONSIDERATIONS
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7-Alkyl-substituted aporphinoids were obtained in moderate yield through the reaction of N-protected 1-ethylidene-1,2,3,4-tetrahydroisoquinolines with benzyne. 7-Alkoxy and 7-chloro derivatives were also prepared by this route, though in lower yield.Mecha
- Atanes, N.,Castedo, L.,Cobas, A.,Guitian, E.,Saa, C.,Saa, J. M.
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p. 7947 - 7956
(2007/10/02)
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- Reaction of Benzyne with 1,2,5-Thiadiazoles and 2,1-Benzisothiazoles
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1,2,5-Thiadiazoles react with benzyne to give 1,2-benzisothiazole derivatives. 3.4-Diphenyl-1,2,5-selenadiazole with benzyne likewise affords 3-phenyl-1,2-benzisoselenazole, contrary to a previous report.Some reactions of 3-(8-cyano-1-naphthyl)-1,2-benzisothiazole are described.The reaction of benzyne with 3-amino-2,1-benzisothiazole afforded N-phenylated products, including N-phenyl-anthranonitrile.
- Bryce, Martin R.,Dransfield, Trevor A.,Kandeel, Kamal A.,Vernon, John M.
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p. 2141 - 2144
(2007/10/02)
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- Direct Gravimetric Determination of Copper(II) with a New Reagent, 3-(o-Carboxyphenyl)-1-o-tolyl-triazene-N-oxide
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3-(o-Carboxyphenyl)-1-o-tolyl-triazene-N-oxide has been used for the gravimetric determination of 2-30 mg Cu(II).The green complex, Cu(C14O3N3H11) is precipitated in the pH range 3-9 adjusted with aqueous caustic soda and hydrochloric acid, and is weighed
- Banerjee, N.M.,Ray, B.C.,Lahiri, S.
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p. 617 - 618
(2007/10/02)
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- Thiono and Dithio Esters, XXV. - (4+2) Cycloadditions with Dithionooxalates
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O,O-Dimethyl dithiooxalate (1a) reacts as a 2?-component with typical dienes (e.g. 2,3-dimethylbutadiene or cyclopentadiene) as well as with the strained ?-bonds of quadricyclane to form cycloaddition products.With the energy-rich double bonds of norbornene derivatives, cyclopropenes, and benzovalene, 1a as a 4?-component furnishes cycloadducts.With cyclopentene an equilibrium of product and starting material was achieved after two weeks. 1a reacts also with substances containing activated triple bonds such as dehydrobenzene or acetylenedicarboxylic ester.
- Hartke, Klaus,Henssen, Guenter,Kissel, Thomas
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p. 1665 - 1676
(2007/10/02)
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