bluuebunny/crossref_metadata_2025_split huggingface dataset:
Addition Reaction of Benzyne to C60
Authors: Tsuda Minoru , Ishida Takayuki , Nogami Takashi , Kurono Sadamu , Ohashi Mamoru 
Published: May 2006

Abstract
Benzyne generated by the reaction of 2-aminobenzoic acid and pentyl nitrite in a refluxing benzene was found to add to C60 in good yield. The reaction products were separated by HPLC to give C60(C6H4), C60(C6H4)2, C60(C6H4)3, and C60(C6H4)4, which were confirmed by mass spectra. 1H NMR spectrum of C60(C6H4) is consistent with the structure of mono-addition product, whereas those of C60(C6H4)2, C60(C6H4)3, and C60(C6H4)4 indicate that they consist of the corresponding mixtures of isomers.
Fracture Toughness of Porous Sintered Bodies of Hydroxyapatite
Authors: Matsuno Takashi , Koishi Masumi 
Published: May 2006

Abstract
Hydroxyapatite powders having various average particle diameters were prepared by a wet process and by the calcination under various conditions. Porous sintered bodies of hydroxyapatite having relative densities of 49.4–85.8% were obtained by heating green compact bodies. The fracture toughness of these sintered bodies was measured by a Single-Edge V-Notched Beam(SEVNB) method. The fracture toughness increased linearly with an increase in relative density.
Simultaneous Control of Regio- and Stereoselectivity in the Reaction of Pentadienyltin by the Lewis Acid-Coordination to Its Ethereal Functionality
Authors: Nishigaichi Yutaka , Fujimoto Manabu , Nakayama Kihei , Takuwa Akio , Hamada Kensaku , Fujiwara Takaji 
Published: May 2006

Abstract
By the TiCl4-coordination to the ethereal functionality on the pentadienyltin, its addition to aldehydes was controlled to proceed at its γ-position with high regioselectivity, in contrast to the usual ε-selectivity of dienyltins and -silanes. High syn,syn-stereoselectivity was simultaneously realized as an asymmetric induction from the tin reagent.
Synthesis of Curcumanolide A, a Unique Spirolactone Sesquiterpene
Authors: Hirukawa Toshifumi , Oguchi Minoru , Yoshikawa Norinobu , Kato Tadahiro 
Published: May 2006

Abstract
A spirocyclic lactone, curcumanolide A, was synthesized from homogeranyl cyanide in 11 steps in racemic form by using Br+-induced cyclization and subsequent ring contraction method.
Growth of Highly Oriented SnO2 Thin Films from Di-n-Butyltin Diacetate by Spray Pyrolysis Technique
Authors: Yagi Isao , Kaneko Shoji 
Published: May 2006

Abstract
SnO2 thin films have successfully been grown from di-n-butyltin diacetate on a heated glass substrate by a pneumatic spraying system. The effects of film growth parameters, i.e., film thickness, film growth rate, and substrate temperature on the microstructures of the films were studied by X-ray diffraction and scanning electron microscopy. The SnO2 films of preferably oriented (200) plane were grown under the optimum growth conditions.
Preparation and Properties of Captodative 1-Amino-2-aryldiphosphenes Carrying Bis(trifluoromethyl)phenyl or Tris(trifluoromethyl)phenyl Group
Authors: Abe Masatoshi , Toyota Kozo , Yoshifuji Masaaki 
Published: May 2006

Abstract
Novel 1-amino-2-aryldiphosphenes carrying 2,6-bis(trifluoromethyl)phenyl or 2,4,6-tris(trifluoromethyl)phenyl group as an aryl substituent were prepared and the push-pull substituent effect on –P=P– was demonstrated by 31P NMR.
Homologation Reaction of γ-Silicon Substituted Allylic Alcohols Using Organoaluminium Reagents and Diiodomethane
Authors: Ukaji Yutaka , Inomata Katsuhiko 
Published: May 2006

Abstract
One carbon homologation reaction of γ-silicon substituted allylic alcohols was found to proceed by the treatment with triethylaluminium followed by diethylaluminium chloride and diiodomethane to afford homoallylic iodides instead of the corresponding cyclopropanes. Silicon function introduced to γ-position was crucial for the homologation reaction.
Heterocyclic Betaines. Novel Ethyleneimidazolium Benzimidazolate Inner Salts. Synthesis, Characterization, and Transformation into 2-Vinyl-1H-benzimidazoles
Authors: Alcalde Ermitas , Gisbert Maria , Pérez-Garcia Lluïsa 
Published: May 2006

Abstract
The first synthesis of the hitherto unknown ethyleneimidazolium benzimidazolate inner salts is described. Their dipolar structure is well reflected on the basis of the 1H and 13C NMR parameters. Under neutral and mild conditions the title compounds underwent a type of β-elimination, affording their corresponding 2-vinyl-1H-benzimidazoles in high yields.
A Novel Intramolecular Cyclization Product of (+)-Catechin under Radical Reaction
Authors: Hirose Yuko , Yamaoka Hiroshi , Akashi Haruo , Nozaki Hiroshi , Fujita Tomoyuki , Nakayama Mitsuru 
Published: May 2006

Abstract
From (+)-catechin under radical reaction with 2,2′-azobis(2-methylpropionitrile), a novel intramolecular cyclization product was isolated and its structure has been characterized to be 2,4′,5′,12-tetrahydroxy-9,10-benzo-7-oxatricyclo[6.2.2.01,6]dodeca-2,5,9-trien-4-one by the spectroscopic analyses and the chemical transformation.
Optical Second Harmonic Generation from Ultrathin Polymer Films Impregnated with Ruthenium Polypyridine Complexes
Authors: Matsuo Taku , Nakamura Hiroshi , Nakao Takuya , Kawazu Mitsuhiro 
Published: May 2006

Abstract
Second-harmonic-generation (SHG) was clearly observed with ultrathin poly(vinyl chloride) films (ca. 25 nm), impregnated with amphiphilic ruthenium tris(2,2′-bipyridine) complexes. On the basis of SHG intensity from multi-layered assembly of the thin film, the laser-induced polarization of the second harmonic wave was concluded to have a big component in perpendicular direction with respect to the film surface.
Factors Affecting the Unusual Reactivity Order in the β-Hydrogen Abstraction of Dialkylzirconocenes
Authors: Negishi Ei-ichi , Nguyen Thinh , Maye John P , Choueiri Daniele , Suzuki Noriyuki , Takahashi Tamotsu 
Published: May 2006

Abstract
Competitive β-hydrogen abstraction of “mixed” dialkylzirconocenes and kinetic measurements of decomposition of methyl(alkyl)zirconocenes reveal unexpected relative reactivity of alkyl groups as β-hydrogen donors, such as s-Bu &gt; t-Bu ≥ Et &gt; n-Bu &gt; i-Bu, which correlate well in most cases with the reactivity order of: β-methyl &gt; β-methylene &gt; β-methine. Some mechanistically crucial features of the reaction are also discussed.
Cross Polarization Characteristics in Solid State High Resolution 13C NMR of Chlorophyll a and Pheophorbide a
Authors: Nozawa Tsunenori , Nishimura Mitsushi , Hatano Masahiro 
Published: May 2006

Abstract
High resolution 13C NMR spectra in solid states were observed for chlorophyll a and pheophorbide a with a high magnetic field spectrometer. The rate constants of cross polarization (TCH) and 1H spin-lattice relaxation time in the rotating frame (T1ρH) were determined. The rate constants and relaxation times reflected structural differences among them.
Cyclamenoside, a Potent Inhibitor of Hydrogen Peroxide Release
Authors: Sakai Naomi , Fukui Chieko , Shizuri Yoshikazu 
Published: May 2006

Abstract
Cyclamenoside, a glucoside ester of gallic acid was isolated from Cyclamen persicum Miller as a potent inhibitor of hydrogen peroxide release from peritoneal neutrophils of rat. The structure of the active compound was determined by some chemical reactions and mainly by using 1H and 13C NMR spectroscopy.
35Cl NQR due to the N-Cl Bonds and 1,2-Addition Reaction to Cyclohexene of N-Chloro Amide Compounds
Authors: Nagao Yoshitaka , Katagiri Shigeyoshi 
Published: May 2006

Abstract
35Cl NQR spectra of N-Cl bonds were measured for CCl3CONHCl, CHCl2CONHCl, CH2BrCONHCl and Cl(CH2)2CONHCl. The ionic character of N-Cl bonds was estimated for these compounds according to Townes and Dailey. The ionic character was compared with the yield of the 1,2-addition to cyclohexene under the photochemical reaction. The yield increased as the value of the ionic character neared zero.
Photocatalytic Decomposition of N2O at Room Temperature
Authors: Kudo Akihiko , Sakata Tadayoshi 
Published: May 2006

Abstract
Decomposition of N2O into N2 and O2 at room temperature was demonstrated on a Pt/TiO2 photocatalyst in the presence of water vapor. The photocatalytic activity was enhanced by the participation of photocatalytic decomposition of water.
Stereocontrolled Total Synthesis of 9(R)-N-BOC-Ahda Methyl Ester
Authors: Chakraborty Tushar K , Hussain Azhar K , Joshi Subodh P 
Published: May 2006

Abstract
An efficient convergent route to the first total synthesis of 9(R)-N-BOC-Ahda methyl ester, in optically pure form, is described.
Syntheses and Characterizations of Mono- and Binuclear Ruthenium(II) Compounds with Mercapto Ligands
Authors: Kawano Masaki , Watanabe Takehide , Matsumoto Kazuko 
Published: May 2006

Abstract
Mono- and binuclear ruthenium compounds with mercapto ligands were stepwise synthesized from hydrogen sulfide and [Ru(II)H(S2CNMe2) (CO) (PPh3)2]. The molecular structures were determined by X-ray crystallography. These compounds are unstable to air.
A Novel Rearrangement in the Sterically Congested (2,4,6-Cycloheptatrienyl)(phenylsulfinyl)methyl Group
Authors: Sugihara Yoshikazu , Kanemaru Jun-ichi , Saito Junji , Murata Ichiro 
Published: May 2006

Abstract
An oxidation product of 3-bromo-1-formyl-4-[(2,4,6-cycloheptatrienyl)(phenylthio)methyl]azulene with m-chloroperbenzoic acid was transformed into 3-bromo-1-formyl-4-(E)-styrylazulene upon standing at 0 °C in a solid state. A similar rearrangement was also observed in the oxidation of 3-chloro-1-methyl-[(2,4,6-cycloheptatrienyl)(phenylthio)methyl]azulene.
Boron, Phosphorus, and Alkaline Earth-Metal Mixed Oxides as Active Catalysts in Partial Oxidation of Methane into Formaldehyde
Authors: Otsuka Kiyoshi , Hatano Masaharu 
Published: May 2006

Abstract
Alkaline earth element-added boron and phosphorus mixed oxides supported on Cab-O-Sil showed high catalytic activity in partial oxidation of methane to HCHO at &lt; 773 K. The results of the experiment using 18O2 suggested that the lattice oxygen atoms of the catalyst are responsible for the oxidation.
Emulsion Copolymerization of Styrene with Amphiphilic Poly(2-oxazoline) Macromonomer
Authors: Uyama Hiroshi , Matsumoto Yasuhiro , Kobayashi Shiro 
Published: May 2006

Abstract
Emulsion copolymerization of styrene with a block-type amphiphilic poly(2-oxazoline) macromonomer having a polymerizable styryl group was performed. The macromonomer possessing the polymerizable group attached to the hydrophobic segment gave monodisperse polymer particles. On the other hand, the macromonomer having polymerizable group linked to the hydrophilic segment produced particles with broad size distribution.
Anodic Preparation of N-(2,2,2-Trifluoroethylidene)sulfenamides and Their Application to the Synthesis of Trifluoromethylated Amines, Aminoketone, and Aminoalkanoates
Authors: Fuchigami Toshio , Ichikawa Shinji , Konno Akinori 
Published: May 2006

Abstract
N-(2,2,2-Trifluoroethylidene)sulfenamides (trifluoromethylated sulfenimines) were easily prepared in one step by anodic oxidation of 2,2,2-trifluoroethylamine and diaryl disulfides in MeCN/Et4NClO4 using MgBr2 as a redox mediator. The sulfenimines were highly useful building blocks for the preparation of trifluoromethylated amines, aminoketone, and aminoalkanoates.
The Palladium-catalyzed Asymmetric Allylations of Chiral Hydrazones Bearing Phosphine Groups. Stereoelectronic Effects of Allylating Reagents on Asymmetric Induction
Authors: Hiroi Kunio , Haraguchi Mitsuhiro , Masuda Yoko , Abe Jun 
Published: May 2006

Abstract
The palladium-catalyzed allylations of chiral hydrazones bearing phosphine groups were executed successfully under neutral reaction conditions with various allylating reagents, affording optically active α-allyl carbonyl compounds. The systematic and stereochemical investigation of these reactions shows that the intramolecularly-substituted phosphine groups served as chiral ligands and the anionic counterparts in the allylating reagents were markedly stereoelectronically effective on asymmetric induction.
Separation of Ethanol/Water Mixture by Silicalite Membrane
Authors: Sano Tsuneji , Yanagishita Hiroshi , Kiyozumi Yoshimichi , Kitamoto Dai , Mizukami Fujio 
Published: May 2006

Abstract
Separation of ethanol/water mixture was carried out by pervaporation through a silicalite membrane on a porous stainless steel support. It was found that the membrane has the high ethanol permselectivity with a separation factor α(EtOH/H2O) of approximately 60.
Spectroscopy, Electrochemistry, and Spectroelectrochemistry of Tetra-tert-Butylated and Octaphenylated Tetraazaporphyrins
Authors: Kobayashi Nagao , Nakajima Shin-ichiro , Osa Tetsuo 
Published: May 2006

Abstract
Several tetraazaporphyrins (TAPs) have been characterized by electronic absorption, fluorescence, and magnetic circular dichroism (MCD) spectroscopy, together with electrochemical methods. The absorption coefficients (ε) and band positions change markedly with changing TAP structure and solvent. The potential differences of the redox couples of tetra-tert-butylated TAP skeleton are closer to those in general porphyrins than phthalocyanines (Pcs).
An Efficient Synthesis of 6-Deoxy-D-allose from Simple Achiral Starting Materials
Authors: Kobayashi Shu , Onozawa Shun-ya , Mukaiyama Teruaki 
Published: May 2006

Abstract
6-Deoxy-D-allose is prepared from simple achiral starting materials, butynal and chloroacetic acid, via two key steps of the chiral tin(II) triflate mediated asymmetric aldol reaction and the dihydroxylation using osmium tetroxide.
Fixation of One of Imidazole Ligands in Low Spin Bis-imidazole Ferric Porphyrin Complexes
Authors: Nakamura Mikio 
Published: May 2006

Abstract
Low spin ferric porphyrin complexes carrying rapidly rotating 1-methylimidazole and rotationally fixed 2-isopropylimidazole have been prepared. Chemical shift range of the pyrrole protons at −56 °C was nearly twice as much as that of the bis(hindered imidazole) complex. Orientation of the fixed ligand relative to the porphyrin plane was determined based on the splitting pattern of the meso-13C signals.
Electronic Characteristics of Sandwich-Type Lanthanide Octaethylporphyrinates
Authors: Jiang Jianzhuang , Machida Ken-ichi , Yamamoto Eiji , Adachi Gin-ya 
Published: May 2006

Abstract
The electronic behaviors of sandwich-type rare earth octaethylporphyrinates Ln(oep)2 and Ln2(oep)3 (Ln = Ce, Pr, and Eu) were characterized by measurements of the near infrared or UV-vis spectra and D.C. conductivity. However, no remarkable change induced by oxidation of the ligand from (oep)2− to (oep·)− was observed on the conductivity.
Generation and Reaction of Samarium(II) Iodide Equivalent from Samarium and Chlorotrimethylsilane/Sodium Iodide System in Acetonitrile
Authors: Akane Noriyuki , Kanagawa Yoshinori , Nishiyama Yutaka , Ishii Yasutaka 
Published: May 2006

Abstract
Samarium(II) iodide equivalent was generated from metallic samarium and Me3SiCl/Nal reagent in acetonitrile under ambient conditions. Dehalogenation of α-halocarbonyl compounds and reductive coupling of ketones were successfully carried out by the use of the samarium(II) species, thus generated, in acetonitrile.
Substituent Effect on the Gas Phase Basicity of α-t-Butylstyrene. Coplanarity and Resonance Demand of a Benzylic Carbocation
Authors: Mishima Masaaki , Nakata Kazuhide , Nomura Hideyuki , Fujio Mizue , Tsuno Yuho 
Published: May 2006

Abstract
Gas phase basicities of α-t-butylstyrenes were determined based on the proton transfer equilibria. The substituent effect on the basicity has been analyzed by means of the LArSR Eq. 1, providing a ρ of −12.5 and an r of 0.86. The reduced r value relative to that for α-methylstyrene may be attributed to sterically twisting out of the coplanarity of benzene π-system in the conjugate acid ion, α-t-butyl-α-methylbenzyl cation.
Gas Phase Basicities of Styrenes toward Trimethylsilyl Cation. Structure and Stability of Me3Si-Styrene+ Complexes
Authors: Mishima Masaaki , Kang Chul Hyun , Fujio Mizue , Tsuno Yuho 
Published: May 2006

Abstract
Gas phase basicities of styrenes toward Me3Si+ have been determined based on Me3Si+ transfer equilibria. The substituent effect on the stability of Me3Si-styrene+ complex has been analyzed by means of the LArSR Eq., giving a ρ value of −5.76 and an r value of 0.41. These results imply that Me3Si-styrene+ complex as a long-lived ion in an ICR cell has not a classical open structure different from the protonated styrene.
A Facile Synthesis of Optically Active γ-Cyanoallylic Alcohols Using Asymmetric Hydrocyanation of α,β-Alkenyl Aldehydes Followed by Stereospecific [3.3]Sigmatropic Chirality Transfer of the Cyanohydrin Acetates
Authors: Abe Hiroshi , Nitta Hideaki , Mori Atsunori , Inoue Shohei 
Published: May 2006

Abstract
Optically active γ-cyanoallylic alcohols were synthesized by using asymmetric hydrocyanation of α,β-alkenyl aldehydes catalyzed by peptide-titanium complex to give α-cyanoallylic alcohols (cyanohydrins) with high optical yields followed by palladium complex catalyzed [3.3]sigmatropic chirality transfer of the corresponding acetates.
Stereoselective Alkylation of Terminal Sulphide in trans-Mo(S)2(syn-Me8[16]aneS4) by Alkyl Halides. Preparation and Crystal Structure of trans-{Mo(SR)(S)(syn-Me8[16]aneS4)}+ (R = Me, PhCH2) Containing Three Distinctive Types of Sulfur Donors
Authors: Yoshida Toshikatsu , Adachi Tomohiro , Matsumura Kazuhiko , Baba Katsumi 
Published: May 2006

Abstract
Facile monoalkylation of trans-Mo(S)2(syn-Me8[16]aneS4) with MeI and PhCH2Br proceeds stereoselectively at the terminal sulphide located on the uncongested axial site to give trans-{Mo(SR)(S)(syn-Me8[16]aneS4)}+ (R = Me, CH2Ph) containing three different types of sulfur donors; thiolato, terminal sulphido, and thioether ligands; the structure of the methyl thiolate complex was elucidated by an X-ray diffraction study.
Rate Enhancement in Ethanolic Aqueous Buffer. The Diels-Alder Reaction
Authors: Smith Michael B , Fay Joseph N , Son Young Chan 
Published: May 2006

Abstract
We have observed a 2.5-3-fold increase in the rate of Diels-Alder reactions when done in aqueous ethanol, where the aqueous solution was prepared with a pH 7 buffer. This is a simple, inexpensive and convenient method for modest acceleration of the Diels-Alder reaction, in addition to the rate increase normally observed in aqueous media.
Transfer of Dye Monolayers onto Silver Metal Films Formed by Photolysis of Silver Salt of Carboxymethylcellulose
Authors: Yonezawa Yoshiro , Miyama Toshihito , Sato Tomoo 
Published: May 2006

Abstract
A bright silver mirror was formed by photolysis of silver salt of carboxymethylcellulose with 253.7 nm light. The silver metal film was proved to be useful for the substrate to deposit dye monolayers. Fluorescence quenching of rhodamine B on the silver metal film was interpreted in terms of excitation energy transfer.
Determination of ClO2 Using ClO2 Selective Electrode
Authors: Oikawa Kikuo , Hoshi Shigeki , Imaizumi Noriko , Furuya Etsuo 
Published: May 2006

Abstract
A voltammetric membrane electrode is applied to the measurement of ClO2. The electrode can detect ClO2 below 10 ppb in aqueous solution, and linearly responds to ClO2 ranging in concentration from 20 ppb to 100 ppm.
Dehydrogenation of Cycloalkanes by Suspended Platinum Catalysts
Authors: Hama Shunichi , Li Xiaomei , Yukawa Kiyoshi , Saito Yasukazu 
Published: May 2006

Abstract
Heterogenized cluster complex [Pt3(CO)6]52− and reduced platinum metal have catalyzed cyclooctane dehydrogenation at comparable rates, whereas dehydrogeno-aromatization of ethylcyclohexane proceeded predominantly with the latter. Active-site ensembles for the formation of cyclooctene, bicyclooctane and aromatics were discussed on reference to the appropriate stretch of platinum metal atoms.
CO2 Sensing Mechanism of La2O3-loaded SnO2
Authors: Mizuno Noritaka , Yoshioka Tetsunori , Kato Kazuyoshi , Iwamoto Masakazu 
Published: May 2006

Abstract
The title mechanism was investigated by temperature programmed desorption (TPD). The TPD profile from La2O3-loaded SnO2 consisted of two CO2 peaks (450 K (α) and 650 K (β)) and one O2 ascent. From the correlations among the amounts of β-CO2 and O2 desorbed, the amount of La2O3 loaded, and the sensitivity to CO2, it was suggested that the decrease in the resistance of the sensor results from the adsorption of β-CO2 and the desorption of O− or O2− to generate oxygen molecules and free electrons.
First Crucial Evidence for Apical-Apical Exchange via a Hypervalent Tellurium Ate Complex in the Reactions of Diaryl Tellurides with Aryllithium Reagents
Authors: Ogawa Satoshi , Masutomi Yutaka , Erata Tomoki , Furukawa Naomichi 
Published: May 2006

Abstract
Pentafluorophenyl phenyl telluride and 3,5-dichloro-2,4,6-trifluorophenyl phenyl telluride reacted with pentafluorophenyllithium or 3,5-dichloro-2,4,6-trifluorophenyllithium at low temperature to form the corresponding tellurium ate complexes as sole intermediates of the ligand exchange on the hypervalent tellurium centers. In these tellurium ate complexes electron-withdrawing aryl ligands were arranged at apical positions and the ligand exchanges took place between the apical-directing groups.
Erinapyrones A and B from the Cultured Mycelia of Hericium erinaceum
Authors: Kawagishi Hirokazu , Shirai Ryoko , Sakamoto Hideki , Yoshida Satoshi , Ojima Fumihiro , Ishiguro Yukio 
Published: May 2006

Abstract
Novel γ-pyrones, erinapyrones A and B, were isolated from the culture-broth of Hericium erinaceum mycelia. These compounds had cytotoxicity toward HeLa cells.
Tris(trimethylsilyl)silyl Radical Induced Bicyclization of 1,6-Dienes and 1,6-Enynes Providing 3,3-Bis(trimethylsilyl)-3-silabicyclo[3.3.0]octanes and 3-Silabicyclo[3.3.0]oct-1-enes
Authors: Miura Katsukiyo , Oshima Koichiro , Utimoto Kiitiro 
Published: May 2006

Abstract
Treatment of 1,6-dienes with tris(trimethylsilyl)silane in the presence of triethylborane or AIBN afforded 3,3-bis(trimethylsilyl)-3-silabicyclo[3.3.0]octanes in addition to monocyclized cyclopentanes. Bicyclization of 1,6-enynes provided the corresponding 3-silabicyclo[3.3.0]oct-1-enes.
Direct Formation of Reactive Alkynyltrichlorotins from 1-Alkynes, SnCl4, and Bu3N. A Mild Alkynylation Reagent of Aldehydes, Acetals, and Enones
Authors: Yamaguchi Masahiko , Hayashi Akio , Hirama Masahiro 
Published: May 2006

Abstract
A reagent system of 1-alkyne, SnCl4, and Bu3N alkynylates aldehydes, acetals, and enones under mild reaction conditions giving acetylenic alcohols, acetylenic ethers, and acetylenic ketones, respectively, in high yields. Alkynyltrichlorotins are shown to be the reactive species for these reactions.
Copper(II)-catalyzed O-Phenylation of Tertiary Alcohols with Organobismuth(V) Reagents
Authors: Ikegai Kazuhiro , Fukumoto Kentarou , Mukaiyama Teruaki 
Published: May 2006

Abstract
A new method for the Cu(OAc)2-catalyzed phenylation of tertiary alcohols under mild basic conditions is described. Triphenylbismuth(V) diacetate and tetraphenylbismuth reagents undergo cross-coupling reactions with α-hydroxycarbonyl compouds efficiently. For non-chelating tertiary alcohols, tetraphenylbismuth fluoride is found suitable as a phenyl donor.
4-(4-Pyridyl)benzoic Acid (PybenH) Dimer: An Efficient and Reasonable Design for a Long Linear Bidentate Building Block Employed in Metal–Organic Coordination Framework
Authors: Sekiya Ryo , Nishikiori Shin-ichi , Ogura Katsuyuki 
Published: May 2006

Abstract
Self-assembly of 4-(4-pyridyl)benzoic acid (pybenH), Ni2+, SCN− and an aromatic guest (naphthalene or dibenz[a,h]anthracene) gave two isostructural inclusion compounds, in which pybenH ligands form the corresponding dimers acting as bidentate building blocks with a length of ca. 20.86 Å.