bluuebunny/crossref_metadata_2025_split huggingface dataset:
A New Confined Spot Test with Hydrophobic Filter Paper and Its Application to the Visual Fluorometric Determination of Trace Aluminium with 2,2′-Dihydroxyazobenzene
Authors: Kaneko Emiko , Ishida Akihiko , Deguchi Yuji , Yotsuyanagi Takao 
Published: March 2006

Abstract
A new sensitive and simple spot test has been developed for the visual determination of trace element in water, based on the formation of a size confined colored ring on hydrophobic filter paper. When 0.1 cm3 of aqueous solution is spotted on the water-repelling surface and evaporated in an oven, a small fleck of 6 mm diameter edged with a colored analyte is formed. This method has been successfully applied to the visual fluorometric determination of trace aluminium(III) ion with 2,2′-dihydroxyazobenzene (DHAB or H2L). The 1 : 1 chelate, [AlL]+, becomes localized in a concentric ring zone at pH 6.5. The detection limit is 2 × 10−8 mol dm−3 (0.5 ppb) by visual fluorometry with a UV lamp in the dark.
A New Ruthenium Catalysed Reaction. Benzylation of Functional Aromatic Compounds
Authors: Jaouhari Rabih 
Published: March 2006

Abstract
Ruthenium (II) and (III) complexes catalysed of the benzylation of functional aromatic compounds were described. Phenol, benzene and their derivatives were benzylated at 140–160 °C, using a benzylhalide in non-polar solvent or without it.
Electrochemical and Photochromic Properties of Azopyridinium Methylsulfates
Authors: Nakagawa Masaru , Rikukawa Masahiro , Watanabe Masayoshi , Sanui Kohei , Ogata Naoya 
Published: March 2006

Abstract
Azopyridinium methylsulfates were systematically prepared and their electrochemical and photochromic properties were evaluated by using UV spectroscopy and cyclic voltammetry. Some azopyridiniums were newly identified as photochromic compounds.
A Convenient Synthesis of Polyyne-bridged Porphyrin Dimers
Authors: Kawabata Shigeki , Tanabe Nobuhiro , OSUKA Atsuhiro 
Published: March 2006

Abstract
A convenient synthetic procedure of a series of polyyne-bridged porphyrin dimers from diphenylpolyyne dialdehydes is reported. Trichloroacetic acid catalyzed double condensation of diphenylpolyyne dialdehydes with bis(3-hexyl-4-methyl-2-pyrrolyl)methane and 3,5-di-tert-butylbenzaldehyde in acctonitrile-dichloromethane followed by p-chloranil oxidation gave a set of diporphyrin model compounds (Pn, n = 0–4) bridged by conjugated triple bonds.
Facile Introduction of Michael Acceptors into Nitrogen Heterocycles. A New Efficient Route to Fused α-Methylene-γ-lactams
Authors: Yamaguchi Ryohei , Mochizuki Katsunobu , Kozima Sinpei , Takaya Hidemasa 
Published: March 2006

Abstract
A new effective method for introduction of Michael acceptors into isoquinoline and β-carboline systems has been developed by means of tin reagents. Deprotection of the N-allyloxycarbonyl-1-(2-methoxycarbonyl)prop-2-enyl adducts affords novel α-methylene-γ-lactams fused with isoquinoline and β-carboline systems.
New Ligands with a Wide Bite Angle. Efficient Catalytic Activity in the Rh(I)-Catalyzed Hydroformylation of Olefins
Authors: Yamamoto Keiji , Momose Satoru , Funahashi Masakazu , Ebata Satoshi , Ohmura Hideaki , Komatsu Hiroshi , Miyazawa Masahiro 
Published: March 2006

Abstract
The relevance of a new diphosphinite, which holds a natural bite angle around 120° in a catalyst complex, to the Rh(I)-catalyzed hydroformylation of certain olefins is examined, exhibiting a high turnover frequency (TOF) as compared with a typical 1,2-bis(diphenylphosphino)ethane with a bite angle around 85°.
Reaction Centers from a New Halophilic Purple Nonsulfur Photosynthetic Bacterium Rhodospirillum sodomense
Authors: Nozawa Tsunenori , Katano Takashi , Kudoh Masatake , Kobayashi Masayuki , Shikama Yuko , Madigan Michael T 
Published: March 2006

Abstract
Both reaction centers containing and lacking cytochrome c were obtained from a new halophilic photosynthetic bacterium Rhodospirillum (R.) sodomense. The cytochrome c has a very low reduction potential not to be reduced by Na-ascorbate. The special pair bands in the both reaction centers exists at around 850 nm, some 20 nm to the blue of that of a nonhalophilic species, R. rubrum.
Catalytic Dehydrochlorination of 1,2-Dichloroethane into Vinyl Chloride over Polyacrylonitrile-Based Active Carbon Fiber (PAN-ACF)
Authors: Mochida Isao , Yasumoto Yoshinori , Watanabe Yoshiro , Fujitsu Hiroshi , Kojima Yasuhiro , Morita Makoto 
Published: March 2006

Abstract
A PAN-ACF with large surface area was found to enhance dehydrochlorination of 1,2-dichloroethane into vinylchloride in selectivity above 99% at a conversion level of 21 to 63% in the temperature range of 300–350 °C. The ACF showed stable activity at 325 °C for 100 h. In contrast, other carbon materials were found to show either low activity or short life, although their selectivities were fairly high.
Synthesis and Specific Binding Property of A New Doubly Armed Crownophane
Authors: Inokuma Seiichi , Yasuda Toshiaki , Araki Sachiko , Sakai Shigefumi , Nishimura Jun 
Published: March 2006

Abstract
A new doubly armed crown compound fused in a cyclophane skeleton was prepared by intramolecular [2 + 2] photocycloaddition. The compound efficiently extracted Ag+ with excellent selectivity in a liquid-liquid system, and the high Ag+-affinity was not reduced even at low pH region.
One-Electron Reduction of N21,N22-Bridged Porphyrin Hydroperchlorate to a Stable Phlorin Radical by 1-Benzyl-1,4-Dihydronicotinamide
Authors: Setsune Jun-ichiro , Wada Ken-ichi , Higashino Hirofumi 
Published: March 2006

Abstract
N21,N22-(1,2-Diphenyletheno)-bridged octaethylporphyrin hydroperchlorate underwent one-electron reduction to give a thermally stable phlorin radical when treated with 1-benzyl-1,4-dihydronicotinamide (BNAH). BNAH reduced, in the presence of acid, the same porphyrin to a two-electron reduced product, N21,N22-(1,2-diphenyletheno)octaethyl-15H-phlorin, in contrast to the NaBH4-reduction to N21,N22-(1,2-diphenyletheno)octaethyl-5H-phlorin.
Selective Si-Si Bond Cleavage in Decaisopropylbicyclo[2.2.0]hexasilane. A Route to Sterically Hindered 1,4-Dichlorocyclohexasilanes
Authors: Kyushin Soichiro , Yamaguchi Hiroyuki , Okayasu Toshiaki , Yagihashi Yusuke , Matsumoto Hideyuki , Goto Midori 
Published: March 2006

Abstract
The Si-Si bond cleavage reaction of decaisopropylbicyclo[2.2.0]hexasilane with PdCl2(PhCN)2 gave cis- and trans-1,4-dichlorocyclohexasilanes. X-ray crystallography of these products show sterically distorted chair conformations of the Si6 rings. The cis- and trans-cyclohexasilane show rather different absorptions in the UV spectra. By treatment with sodium, both isomers reproduced the bicyclo[2.2.0]hexasilane quantitatively.
X-Ray Crystallographic Analysis of Phosphono Sugar and a Novel Preparation of Phosphono Sugar Nucleoside Derivatives
Authors: Yamashita Mitsuji , Yabui Akihiro , Oshikawa Tatsuo , Kakehi Akikazu 
Published: March 2006

Abstract
Stereoselective reactions of 1-methoxy-3-phospholene 1-oxide gave a novel 1-deoxy phosphono sugar, whose relative configuration was confirmed by X-ray crystallography. Further reaction of the 1-deoxy phosphono sugar with phthalimide and 6-chloropurine produced novel phosphono sugar nucleosides.
A New Organic Ferromagnet: 4-Benzylideneamino-2,2,6,6-tetramethylpiperidin-1-oxyl
Authors: Nogami Takashi , Tomioka Katsuyuki , Ishida Takayuki , Yoshikawa Hajime , Yasui Masanori , Iwasaki Fujiko , Iwamura Hiizu , Takeda Naoya , Ishikawa Masayasu 
Published: March 2006

Abstract
An organic radical crystal of 4-benzylideneamino-2,2,6,6-tetramethylpiperidin-1-oxyl was found to be a bulk ferromagnet, as indicated by the divergence of the ac susceptibility at 0.18 K and by the magnetic hysteresis below this temperature. The X-ray crystal structure analysis at room temperature revealed that the crystal consisted of an almost two-dimensional network of the N-O sites.
Electrochemical Reduction of Formaldehyde, Acetaldehyde, and Acetone to The Corresponding Alcohols Using Alcohol Dehydrogenase as an Electrocatalyst
Authors: Kuwabata Susumu , Nishida Kazufumi , Yoneyama Hiroshi 
Published: March 2006

Abstract
Electrochemical reduction of formaldehyde to methanol, acetaldehyde to ethanol, and acetone to 2-propanol has been achieved using either one of the two kinds of alcohol dehydrogenases, ADH(EC1.1.1.1) and ADH(EC1.1.1.2), as an electrocatalyst. ADH(EC1.1.1.1) was effective in reducing formaldehyde at a relatively high reaction rate, while ADH(EC1.1.1.2) worked well for the reduction of acetaldehyde and acetone. In all cases the current efficiency and the production yield attained to ca. 100%.
Structure and Absolute Stereochemistry of Bisconicasterone from the Marine Sponge Theonella swinhoei
Authors: Inouye Yoshinobu , Sugo Yumi , Kusumi Takenori , Fusetani Nobuhiro 
Published: March 2006

Abstract
Bisconicasterone was isolated from the marine sponge Theonella swinhoei, and its structure was established by spectroscopic analysis as well as chemical correlation with its monomeric component, conicasterone, the absolute stereochemistry of which was confirmed by modified Mosher’s method, chemical conversion, and by X ray crystallography.
Synthesis of a New Family of Phenol Resin by Enzymatic Oxidative Polymerization
Authors: Uyama Hiroshi , Kurioka Hideharu , Kaneko Isao , Kobayashi Shiro 
Published: March 2006

Abstract
Enzymatic oxidative polymerization of phenol has been performed in an aqueous organic solvent using horseradish peroxidase as catalyst to produce a new family of phenol resin. The resulting polymer was partly soluble in DMF and DMSO and the fraction soluble in DMF has molecular weight of 3.5 × 104. From IR and 1H NMR analyses, the polymer structure was found to be composed of a mixture of phenylene and oxyphenylene units.
Structural Characterization of LiMnVO4 with a Spinel-Related Structure
Authors: Sato Mineo , Kano Shigeru 
Published: March 2006

Abstract
A new compound of LiMnVO4 has been synthesized. The crystal structure was determined by the Rietveld analysis. The framework structure is comprised of nearly regular octahedra of MnO6 with edge-sharing. The lithium and vanadium ions occupy alternatively the tetrahedral interstitial sites constructed by close-packing arrays of oxide ions. The structure is discussed in relation to a normal spinel structure.
Chiral Synthesis of a Co(III) Complex on Ammonium Bilayer Templates
Authors: Toyohara Kiyotsuna , Yamami Tomoharu , Nishimi Taisei , Kunitake Toyoki 
Published: March 2006

Abstract
Bilayer membranes of chiral double-chain ammonium amphiphiles incorporated an anionic tridentate ligand in enantiomeric orientations, as confirmed by induced circular dichroism. Complexation of aqueous CoSO4 with the bilayer-bound ligand led to formation of chiral Co(III) complexes.
A Novel Method for the Preparation of Macrolides from ω-Hydroxycarboxylic Acids
Authors: Shiina Isamu , Mukaiyama Teruaki 
Published: March 2006

Abstract
An efficient method for the synthesis of macrolides directly from ω-hydroxycarboxylic acids is established by using 4-(trifluoromethyl)benzoic anhydride and a catalytic amount of active titanium(IV) salts together with chlorotrimethylsilane under mild conditions.
Preparation and Sugar Binding Property of Microspheres Having Surface-anchored Phenylboronic Acid Groups
Authors: Tsukagoshi Kazuhiko , Kawasaki Rika , Maeda Mizuo , Takagi Makoto 
Published: March 2006

Abstract
Microspheres having phenylboronic acid groups on the resin surface were successfully prepared by emulsion polymerization of styrene, butyl acrylate, and m-acrylamidophenylboronic acid. The microspheres were swollen in an alkaline aqueous suspension by adding methylethylketone so that phenylboronic acid groups in the resin migrate out to the aqueous-organic interface in their ionized forms. d-Glucose was bound onto the microsphere by complex (ester) formation between phenylboronic acid moiety and cis-diol group of d-Glucose.
5,7-Dimethyl-8-quinolinol as a Specific Non-extracting Reagent for Lanthanide Ions at Usual pH Region
Authors: Takayanagi Toshio , Kudoh Tohru , Yotsuyanagi Takao 
Published: March 2006

Abstract
Lanthanide ions were not extracted with 5,7-dimethyl-8-quinolinol in the wide pH region of less than 11, even though other metal ions of Al3+, and the first transition metal ions were extracted at ordinary pH conditions. To realize this specificity, the presence of both of alkyl groups at 5- and 7- positions was essential. The possibility of application of this finding to the separation and purification of lanthanide is discussed.
Novel Multibilayer Film Incorporating Electro- and Photo-Chemically Active Decatungstate Anion
Authors: Moriguchi Isamu , Hanai Kouhei , Hoshikuma Akiko , Teraoka Yasutake , Kagawa Shuichi 
Published: March 2006

Abstract
The ionic complex between a cationic double-chain amphiphile and a decatungstate anion formed a well-organized multibilayer film, not only with keeping inherent properties of both the amphiphile and decatungstate anion almost intact but also with generating unique temperature dependence of the redox reaction regulated by the phase transition of bilayer.
Palladium–Catalyzed Formation of Aroylcobalt Complexes from Iodoarenes and Tetracarbonylcobaltate(−1) Anion and Syntheses of the Model Intermediate Complexes
Authors: Misumi Yoshihiko , Ishii Youichi , Hidai Masanobu 
Published: March 2006

Abstract
Anion complex [Co(CO)4]− reacted with iodoarenes to form aroylcobalt complexes in the presence of a palladium catalyst and excess PPh3. As models of the intermediate of this reaction, Pt–Co and Pd–Co dinuclear complexes were synthesized from reactions of [Co(CO)4]− with Pt(Ar)(OTf)(PPh3)2 and Pd(Ar)(OTf)(PMe3)2, respectively, and their crystal structures were determined by X-ray analysis.
Diastereoselective Addition of Organometallic Reagents to Imines or Hydrazones Containing 1,3-Oxathiane As a Chiral Template
Authors: Matsubara Seijiro , Ukita Hideo , Kodama Tomohiro , Utimoto Kiitiro 
Published: March 2006

Abstract
The addition of organometallic reagents to imines or hydrazones containing 1,3-oxathiane as a chiral auxiliary proceeded with high diastereoselectivity and can be used as a key reaction for the preparation of chiral β-amino alcohols.
Synthesis and Properties of Pyranose Derivatives with Trifluoromethyl Group Used as Chiral Dopants for Ferroelectric Liquid Crystals
Authors: Itoh Keizou , Takeda Mitsunori , Namekawa Masaaki , Nayuki Shinichi , Murayama Yoshinobu , Yamazaki Takashi , Kitazume Tomoya 
Published: March 2006

Abstract
A variety of pyranose derivatives with a trifluoromethyl group were synthesized and found to be excellent chiral dopants for ferroelectric liquid crystals. Relationships between molecular structures and induced ferroelectric properties were discussed.
Photoreaction between Carbazole and trans-Stilbene Occurring at the Interface of Their Crystallites
Authors: Koshima Hideko , Ichimura Hironori , Matsuura Teruo 
Published: March 2006

Abstract
Irradiation of the mixed crystal which is a simple mixture of carbazole and trans-stilbene gave a photoadduct. The photochemical reaction proceeds at the interface of the crystallites of carbazole and trans-stilbene in the mixed crystal.
Thermogravimetric Study of Carbonaceous Deposits on Nickel Catalysts Physically Mixed with an Unreducible Oxide
Authors: Takayasu Osamu , Takegahara Yumi , Matsuura Ikuya 
Published: March 2006

Abstract
NiO physically mixed with an unreducible oxide such as MgO, SiO2 and α-Al2O3 showed high activity in the formation of carbonaceous deposits after the reduction of NiO in a CH4 stream. When the stream was switched to CO2, the entire Ni was oxidized again to NiO after the removal of the deposits, though the entire Ni involved in a pure NiO or in a supported Ni/MgO was not oxidized. The size of Ni particles formed in these mixtures was less than 10 nm in diameter.
Hydroxylation of Deoxyguanosine at the C-8 Position in the Thiosulfate-Hydrogen Peroxide Reaction System. Evidence of Hydroxyl Radical Generation in the System
Authors: Seto Hiroshi , Koike Hiroshi , Sasano Hideo 
Published: March 2006

Abstract
The thiosulfate-hydrogen peroxide reaction system generates thiosulfate radical anion and hydroxyl radical. When 2′-deoxyguanosine (dG) was included in the system, it was hydroxylated at the C-8 position, and the hydroxylation was markedly enhanced by addition of a trace amount of iron ion.
anti-1,2,5,6-Tetra-tert-butyl-3,3,4,4,7,7,8,8-octaisopropyltricyclo[4.2.0.02,5]octasilane
Authors: Kyushin Soichiro , Kawabata Motoo , Yagihashi Yusuke , Matsumoto Hideyuki , Goto Midori 
Published: March 2006

Abstract
The title ladder polysilane was synthesized by the cross-coupling of all-trans-[(t-Bu)ClSi]4 and Cl(i-Pr)2SiSi(i-Pr)2Cl with lithium in 40% yield. X-ray crystallographic analysis of the ladder polysilane shows a highly strained silicon skeleton; the Si-Si bond lengths vary from 2.412(3) to 2.481(2) Å and the Si-Si-Si bond angles of the Si4 rings range from 87.9(1) to 90.5(1)°. By comparison of the structure and UV-visible spectra of this compound with those of the perisopropyl analog, we found that the structures and properties of ladder polysilanes are strongly affected by the substituents.
Top-down Preparation of Dispersions of C60 Nanoparticles in Organic Solvents
Authors: Deguchi Shigeru , Mukai Sada-atsu 
Published: March 2006

Abstract
Nanoparticles of C60, prepared by hand-grinding bulk solids in an agate mortar, were found to disperse stably in various organic solvents, in which molecular solubility of C60 is negligibly small. The resulting dispersions contained the C60 nanoparticles, whose average size varies between 200 and 300 nm depending on the solvent. The C60 concentrations in the dispersions were an order of magnitude higher than those prepared by the conventional methods.
Facile Palladium-catalyzed Hydrogermylation Polymerization of a Dihydrogermane with Diynes Affording Light-emissive Germylene–Divinylene Polymers
Authors: Yamashita Hiroshi , Channasanon Somruethai , Uchimaru Yuko 
Published: March 2006

Abstract
Hydrogermylation polymerization of diphenylgermane with aliphatic and aromatic diynes smoothly proceeded in the presence of Pd–PCy3 (Cy = cyclohexyl) catalysts to give new germylene–divinylene polymers in high yields.
A Facile Route to Silver Nanowires
Authors: Kong Rui , Yang Qing , Tang Kaibin 
Published: March 2006

Abstract
This letter describes a facile self-seeding route to silver nanowires using Dextran which worked as both a sacrificial template and a reducing reagent in aqueous solution. In the entire process, there are not any exotic seeds or stabilizers needed, and the growth mechanism is also briefly discussed.
Synthesis of Pyridylbutadiyne Derivatives and Improvement of Their Solid-state Polymerizability by Complexation with Alkanoic Acid
Authors: Sato Hironori , Okada Shuji , Kimura Tatsumi , Shimada Satoru , Matsuda Hiro , Nakanishi Hachiro 
Published: March 2006

Abstract
4-Pyridyl-substituted polydiacetylenes, which have potential to form intermolecular complexes with a variety of species, were synthesized from 8-(4-pyridyl)oct-5,7-diynyl carbamate (PODC) derivatives for the first time. The monomer conversion of solid-state polymerization was improved by complexation with dodecanoic acid.
Anthracene-coupled Pyridine Amines: A New “Off–On” Switch for Molecular Recognition Studies on Dicarboxylic Acids
Authors: Ghosh Kumaresh , Masanta Goutam 
Published: March 2006

Abstract
The fluorescent photoinduced electron-transfer (PET) chemosensor 1, which can function as “off–on” fluorescence switch for dicarboxylic acids has been designed and synthesized for the first time. The carboxylic acid binding takes place through charge neutral pyridine amine receptor sites and the sensor is found to be selective for glutaric acid. The binding has been examined by fluorescence, UV–vis, and NMR spectroscopic methods.
Mo LIII-edge XANES Study of Catalytically Active Mo Species on Silica–Alumina Supports for Methane Dehydroaromatization
Authors: Aritani Hirofumi , Shinohara Satoru , Koyama Shin-ichi , Otsuki Kazuo , Kubo Takashi , Nakahira Atsushi 
Published: March 2006

Abstract
L-edge XANES spectroscopy is applied to characterize the active Mo species for methane dehydroaromatization over MoO3/SiO2–Al2O3 and MoO3/H–MFI. For highly active MoO3(7.5 wt %)/H–MFI in Si/Al2 = 90, dispersed molybdenum(II) carbide species are formed with oxy-carbide species after the reaction. Partially reduced species (Mo4+) are formed on amorphous SiO2–Al2O3 support, as well as MoO3/H–MFI in high Si/Al2 ratio. In contrast, formation of deeply reduced ions such as metallic ones on H–MFI with low Si/Al2 ratio also gives low activity. It is suggested that stable molybdenum(II) carbide can be formed dispersively on H–MFI (Si/Al2 = 90) even in coexistence of oxo-species.
Convergent Access to Macrocycles via Reversible Transacetalation
Authors: Yokoyama Akihiro , Nonaka Yuuki , Uchida Daisuke , Hiraoka Shuichi , Yokozawa Tsutomu 
Published: March 2006

Abstract
Acetalization of aromatic aldehydes 1 with bis(trimethylsilyl ether)s 2 or 4 in the presence of a Lewis-acid catalyst was investigated. Under the optimized conditions, this reaction initially gave a mixture of oligomers, which converged to a [2 + 2] macrocycle in high yield via reversible transacetalation.
Development of MicroMAS NMR Probehead for Mass-limited Solid-state Samples
Authors: Yamauchi Kazuo , Asakura Tetsuo 
Published: March 2006

Abstract
The probehead (microMAS) is developed for high resolution solid-state NMR observation of mass-limited samples. The probehead gives extremely high sensitivity of the spectra, and largely improves the limit of detection for solid-state NMR. As the results, the NMR spectra of μg order samples could be successfully observed using conventional 400 MHz NMR within a few hours.
The Direct Synthesis of Hydrogen Peroxide from H2 and O2 over Au/TS-1 and Application in Oxidation of Thiophene in Situ
Authors: Ma Shuqi , Li Gang , Wang Xiangsheng 
Published: March 2006

Abstract
Au supported on TS-1 exhibits high activity in hydrogen peroxide formation from H2 and O2 under mild conditions (ambient temperature, low pressure about 1.5 MPa, water as solvent, 2 h); and thiophene dissolved in n-octane (as model gasoline) is oxidized in situ over Au/TS-1, about 82% removal of thiophene can be achieved.
Topological Variation between Hexa- and Trithiacalix[6]arene–Copper(II) Complexes: From Sphere to Wheel by Reducing the Number of the Sulfur Bridges
Authors: Kon Noriyoshi , Iki Nobuhiko , Kajiwara Takashi , Ito Tasuku , Miyano Sotaro 
Published: March 2006

Abstract
Contrary to hexathiacalix[6]arene (H6L6S) forming [Cu10(L6S)2]-type spherical decacopper(II) complex, trithiacalix[6]arene (H6L3S), in which three sulfur bridges of H6L6S are replaced with methylenes in an alternate manner, affords nanosized wheel-shaped octanuclear complex [Cu8(H2L3S)4] consisting of four [Cu2H2L3S] units.
Surfactant-templated Synthesis of Resorcinol–Formaldehyde Polymer and Carbon Nanostructures: Nanospheres and Nanowires
Authors: Fujikawa Daisuke , Uota Masafumi , Yoshimura Takumi , Sakai Go , Kijima Tsuyoshi 
Published: March 2006

Abstract
Thermosetting polymer nanospheres and nanowires have been synthesized by the NaOH-catalyzed polymerization of resorcinol and formaldehyde in the presence of cetyltrimethylammonium bromide as a core template together with/without trimethylbenzene as an additive and topotactically converted into their carbonized forms.
Chelation-assisted Facile C–N Bond Oxidative Addition of Spironaphthoxazines by Ru(η4-cycloocta-1,5-diene)(η6-naphthalene)
Authors: Takano Kaori , Inagaki Akiko , Akita Munetaka 
Published: March 2006

Abstract
β-Spironaphthoxazines 1 undergo oxidative addition of the C–N bond of the indoline moiety at ambient temperature upon treatment with the labile Ru(0) precursor, Ru(η4-cycloocta-1,5-diene)(η6-naphthalene) (2), to give the Ru(II) complex with the naphtholato-tethered 1,4-diazabuta-1,3-diene ligand 3. The reaction should be triggered by chelation of the isomeric azanaphthoquinone structure, which should bring the C–N bond to the position suitable for the oxidative addition.