bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Hydrogen Insertion Compound of Molybdenum Oxide Hydrate, H0.12–0.22MoO3·H2O, and Its Formation Process from Hydrogen Molybdenum Bronze, HxMoO3
Authors: Eda Kazuo , Sotani Noriyuki 
Published: July 2006

Abstract
Based on XRD and chemical analysis results, the hydrogen insertion compound of molybdenum oxide hydrate (H-hydrate) was suggested to be a genotypic compound of yellow molybdenum trioxide monohydrate, MoO3·H2O. H-hydrate was obtained in a hot HCl solution and in hot water from hydrogen molybdenum bronze, HxMoO3. The hydrogen bronze with x≤0.24 and the molybdenum species formed in the solution played a role in the formation of H-hydrate. In this process, a temporary dissolution of Mo5+ was observed at the beginning of the formation.
Structure and Homogeneous Chemical Equilibria of Lithium β-Diketonates in Dimethyl Sulfoxide
Authors: Araki Yoshinori , Iwase Akio , Kudo Setsuko , Suzuki Toshishige M , Yokoyama Toshiro 
Published: July 2006

Abstract
The structure and the homogeneous chemical equilibria of lithium β-diketonates (LiL), viz., Li(dbm), Li(bzac), and Li(acac), in dimethyl sulfoxide (DMSO) were studied by means of 13C NMR, IR spectral measurements, and rotating disk voltammetry, where dbm−, bzac−, and acac− indicate the enolate anions of dibenzoylmethane, benzoylacetone, and acetylacetone, respectively. It was found by the 13C NMR and IR spectral measurements that LiL existed mainly as Li(uni-L) in DMSO, where uni- means that the ligand coordinates to the metal as unidentate. Since it is known that LiL dissociates slightly into ions in DMSO, LiL is involved in the following homogeneous chemical equilibrium:
Li(uni-L)\ightleftharpoonsL++L−
Furthermore, the apparent dissociation constant (logKapp) of LiL was obtained by rotating disk voltammetry in DMSO containing 0.1 mol dm−3 tetrabutylammonium perchlorate (TBAP), i.e., Li(dbm): −3.0±0.1, Li(bzac): −2.7±0.1, and Li(acac): −2.0±0.1, respectively. It was noted that the homogeneous chemical equilibria shifted more to the right in 0.1 mol dm−3 TBAP–DMSO than in DMSO alone. The behavior can be explained mainly in terms of the interaction between the π-electron system of Li(uni-L) and the cations of TBAP.
Isomerization and Racemization of the Tris(4,4′-dimethyl-2,2′-bipyridine N,N′-dioxide)chromium(III) Complex
Authors: Kanno Hideaki , Yamamoto Junko , Murahashi Satoshi , Utsuno Shunji , Fujita Junnosuke 
Published: July 2006

Abstract
A new chromium(III) complex, [Cr(4,4′-Me2bpdo)3]3+ (4,4′-Me2bpdo=4,4′-dimethyl-2,2′-bipyridine N,N′-dioxide) was prepared and resolved into a pair of enantiomers by an SP-Sephadex column chromatographic method using an achiral eluting agent Na2SO4. Both perchlorate and nitrate of the complex were found to crystallize in the lel2·ob(Δ(λλδ), Λ(δδλ)), form. Upon dissolution in water, the complexes isomerized to the lel3(Δ(λλλ), Λ(δδδ)), form with a rapid change in absorption spectra, and then racemized (Δ\ightleftarrowsΛ) slowly. The rate constants at 35.0°C were 4.39×10−3 s−1 for the isomerization and 3.46×10−5 s−1 for the racemization. These inversion reactions including conformational change (δ\ightleftarrowsλ) and configurational change (Δ\ightleftarrowsΛ) are supposed to proceed by intramolecular mechanisms. The rates of isomerization and racemizatioin of the 4,4′-Me2bpdo complex are ca. two and ten times slower than those of [Cr(bpdo)3]3+ (bpdo=2,2′-bipyridine N,N′-dioxide), respectively.
Preparation and Characterization of Cobalt(III), Nickel(II), and Copper(I) Complexes Containing 5,8-Diphenyl-5,8-diphospha-2,11-dithiadodecane (L), CH3SCH2CH2P(C6H5)CH2CH2P(C6H5)CH2CH2SCH3, and Molecular Structure of [Ni(rac(P)-L)2](BF4)2
Authors: Kitagawa Tetsuji , Kita Masakazu , Kashiwabara Kazuo , Fujita Junnosuke 
Published: July 2006

Abstract
Δ-RR,Λ-SS-[Co(acac)2(rac(P)-L]+ and [Co(acac)2(meso(P)-L)]+ were obtained by reaction of [Co(acac)3] (acac=2,4-pentanedionate ion) with 5,8-diphenyl-5,8-diphospha-2,11-dithiadodecane (L) in 1 : 1 molar ratio in dichloromethane in the presence of active charcoal, no Δ-SS,Λ-RR isomer of the rac(P)-L complex being formed. Five-coordinate [Ni(rac(P)-L)2]2+ and [Ni(meso(P)-L)2]2+ were yielded by reaction of Ni(II) and L in 1 : 2 molar ratio in methanol, and the molecular structure of less soluble [Ni(rac(P)-L)2](BF4)2 was determined by X-ray analysis. Crystal data: monoclinic, space group P21⁄n, a=17.136(3), b=20.134(5), c=14.106(3) Å, β=93.30(2)°, V=4859(2) Å3, Z=4, R=0.089 for 8001 reflections. The Ni atom is surrounded square pyramidally by four P atoms in the basal plane and one S atom at the apical position with distances of the Ni–P: 2.214(2)–2.234(2) Å and the Ni–S: 2.603(2) Å. Both [Ni(rac(P)-L)2]2+ and [Ni(meso(P)-L)2]2+ in CH2Cl2 solutions exchange four –SCH3 groups at the apical positin on the NMR time scale. White [Cu(rac(P)-L)]BF4 was precipitated selectively by reaction of Cu(BF4)2·6H2O and L in 1 : 1 molar ratio in ethanol.
A Novel and Efficient Method for the Preparation of α-Hydroxyimino Carbonyl Compounds from α,β-Unsaturated Carbonyl Compounds with Butyl Nitrite and Phenylsilane Catalyzed by a Cobalt(II) Complex
Authors: Kato Koji , Mukaiyama Teruaki 
Published: July 2006

Abstract
Various α,β-unsaturated carbonyl compounds, such as α,β-unsaturated esters, α,β-unsaturated ketones, α,β-unsaturated nitriles, and α,β-unsaturated amides, were directly converted to the corresponding a-hydroxyimino carbonyl compounds in high yields on treatment with butyl nitrite and phenylsilane in the presence of a catalytic amount of N,N′-bis(2-ethoxycarbonyl-3-oxobutylidene)ethylenediaminatocobalt(II) complex under mild conditions.
Effects of Lateral Substituents on the Mesomorphic Properties of N-[4-(4-Methoxybenzoyloxy)benzylidene]aniline and Its Isomeric Compound
Authors: Hasegawa Hiroyuki , Matsunaga Yoshio , Miyajima Nobuhiko 
Published: July 2006

Abstract
The nematic phases exhibited by the title compounds carrying a hydroxyl or cyano group at the 2-position of the aniline moiety are thermally more stable than expected on the basis of the relationship between the nematic–isotropic transition temperature of the corresponding halogeno derivatives and the van der Waals volume of the substituents.
Conjugate Reduction of 2-Butene-1,4-diones with LiAlH4–SbCl3
Authors: Sayama Shinsei , Inamura Yutaka 
Published: July 2006

Abstract
The reagent LiAlH4–SbCl3 was found to be more effective for a conjugate reduction of 2-butene-1,4-diones in comparison with the reagent LiAlH4–other metal halides.
Thermodynamic Studies of Copper(II) Sulfate in Aqueous Mannitol from Electromotive Force Measurements
Authors: Blokhra Ratan L , Sharma Anil K 
Published: July 2006

Abstract
Electromotive force measurements of the cell Cu–Hg/CuSO4(m)/Hg2SO4(s)/Hg have been made at 288, 298, 308, and 318 K for mannitol composition X=5, 15, and 25% (w/w) in water. The standard emf values of the cell at different temperatures and at different composition of mannitol + water mixtures have been determined by an extrapolation method. These have been utilized to evaluate the mean activity coefficient of copper(II) sulfate. The standard free energy for the cell reaction, and the primary medium effects upon CuSO4 have been evaluated. The standard thermodynamic quantities for the process of transfer of CuSO4 from water to the mannitol solution have been calculated from the values of the standard potential. The transfer parameters have been split into the electrostatic and chemical contributions and the results have been explained in the light of ion–solvent interactions and structural contributions to solvents.
Anionic Surfactants with Divalent Counterions of Separate Electric Charge. III. Proton NMR Study
Authors: Moroi Yoshikiyo , Matuura Ryohei , Yonemitsu Tadashi 
Published: July 2006

Abstract
The proton NMR spectra of 1-tetradecanesulfonates whose cationic counterion, the 1,1′-polymethylenedipyridinium ion (with even-numbered methylene groups up to 14), is divalent with separate electric charge, were measured. From the chemical shifts the pyridine rings were found to move about in quite hydrophilic environment of micellar surface region, leading to a downfield shift of methylene groups next to head group of surfactant ion. The chemical shifts of methylene groups of micellized counterions with more than eight methylene groups are different from those of corresponding counterions in aqueous environment and are similar to those of methylene group in hydrophobic micellar interior. These results strongly support the previous conclusion that the polymethylene group with more than eight methylene groups folds and penetrates micellar interior in their micellized state.
Exothermic Reactions in C2 Hydrocarbon Flames
Authors: Fukutani Seishiro , Kunioshi Nílson , Sakaguchi Keizo , Jinno Hiroshi 
Published: July 2006

Abstract
Premixed stoichiometric flames of acetylene, ethylene, and ethane with air were investigated using a chemical scheme composed of eighty-two pairs of elementary reactions to illustrate the dependence of the propagation mechanisms of C2 hydrocarbon flames on the heat release distribution. The general role of heat release distribution through flames was depicted by means of an analytical treatment of the governing equations with the thermal properties of the gases being constant and the temperature profile given by an appropriate function of the position in the flame. It was found that the amount of heat released by chemical reactions at low-temperature regions of a flame is of fundamental importance for its propagation and that the main trigger of exothermic reactions at those zones is hydrogen atoms, which diffuses from the flame front; in the acetylene flame reactions consuming hydrogen atoms at the low-temperature region were found to yield all the heat released at that zone. Heat release distribution extended down to low-temperature regions was found to be able to lead to large burning velocities even though the amount of heat released at each position was small.
Correlations among One-Bond Deuterium Isotope Shifts in 13C NMR and C–H Stretching Frequencies in IR for Monosubstituted Methane Derivatives
Authors: Nakashima Yasuki , Takahashi Kensuke 
Published: July 2006

Abstract
The effects of one bond deuterium isotope on 13C NMR chemical shifts (1Δ) of the title compounds were found to be correlated with the corresponding C–H stretching frequencies(νCH) in IR spectroscopy, as follows: 1Δ(ppb)=−8.69 νCH(cm−1)+26500.
Acceleration of the Hydrogenation of 2-Octanone with an Alkali Salt of an Organic Acid
Authors: Osawa Tsutomu , Harada Tadao 
Published: July 2006

Abstract
The hydrogenation of 2-octanone over various types of nickel catalysts was found to be accelerated by the addition of small amounts of carboxylates of alkali metals such as Na, K, and Li.
A Convenient Synthesis of Monofluorobutene Derivatives
Authors: Matsuo Noritada , Kende Andrew S 
Published: July 2006

Abstract
(Z)-1,4-Dibromo-1,1,2-trifluoro-2-butene (2a) reacts regioselectively with sodium benzenesulfinate and triethyl phosphite respectively to yield the (Z)-isomers of 3,4,4-trifluoro-4-bromo-2-butenyl phenyl sulfone (3) and diethyl (Z)-4-bromo-3,4,4-trifluoro-2-butenylphosphonate (6). These could easily be transformed to a variety of polyfunctional monofluoroalkene derivatives.
Effect of Water Vapor on the Transformation of cyclo-Tetraphosphate
Authors: Nariai Hiroyuki , Motooka Itaru , Tsuhako Mitsutomo 
Published: July 2006

Abstract
The effect of water vapor on the process of transformation of sodium cyclo-tetraphosphate Na4P4O12(P4m) to sodium cyclo-triphosphate Na3P3O9(P3m) was investigated by means of DTA-TG, X-ray diffraction analysis, isothermal heating with an electric furnace, and HPLC. The transformation of P4m to P3m proceeded by a radical reaction via different reaction pathways in dry and humid air.
Soccerane Derivatives of Given Symmetries
Authors: Fujita Shinsaku 
Published: July 2006

Abstract
Symmetrical properties of soccerane and its derivatives are discussed in the light of subduction of coset representations (CRs). The 60 vertices of soccerane are equivalent and construct a single orbit governed by the CR, Ih(/Cs). This orbit is divided into several orbits in the respective derivative, where the mode of the division is controlled by the subduction. The number of derivatives with a given formula and a given subsymmetry is calculated in terms of unit subduced cycle indices, which are derived from the subduction.
Syntheses of Anionic Surfactants Having Two Polyfluoroalkyl Chains and Their Flocculation Ability for Dispersed Magnetite Particles in Water
Authors: Yoshino Norio , Komine Noboru , Suzuki Jun-ichi , Arima Yuki , Hirai Hidefumi 
Published: July 2006

Abstract
Four anionic surfactants having two polyfluoroalkyl chains in a molecule, sodium salt of bis(1H,1H,2H,2H-heptadecafluorodecyl) 2-sulfosuccinate, CF3(CF2)7(CH2)2OCOCH2CH(SO3Na)COO(CH2)2(CF2)7CF3, sodium salt of bis(1H,1H,9H-hexadecafruorononyl) 2-sulfosuccinate, H(CF2)8CH2OCOCH2CH(SO3Na)COOCH2(CF2)8H, sodium salt of bis(1H,1H,7H-dodecafluoroheptyl) 2-sulfosuccinate, H(CF2)6CH2OCOCH2CH(SO3Na)COOCH2(CF2)6H and sodium salt of bis(1H,1H,5H-octafluoropentyl) 2-sulfosuccinate, H(CF2)4CH2OCOCH2CH(SO3Na)COOCH2(CF2)4H, were prepared from maleic anhydride, the corresponding alcohols having a polyfluoroalkyl chain and sodium hydrogensulfite. The flocculation and redispersion abilities of these surfactants against dispersed magnetite particles in water have been examined in comparison with other four anionic surfactants having a single polyfluoroalkyl chain in a molecule; sodium pentadecafluorooctanoate, CF3(CF2)6COONa, sodium 9H-hexadecafluorononanoate, H(CF2)8COONa, sodium 7H-dodecafluoroheptanoate, H(CF2)6COONa, and sodium 5H-octafluoropentanoate, H(CF2)4COONa. These abilities were estimated by measurement of the contact angle against water using pelleted surface-modified magnetite. The abilities of the surfactants having two polyfluoroalkyl chains against flocculation-redispersion were superior to those of the surfactants having one polyfluoroalkyl chain. Especially, sodium salt of bis(1H,1H,2H,2H-heptadecafluorodecyl) 2-sulfosuccinate was the most effective surface active agent for these abilities.
Flash Vacuum Pyrolysis of 5-Diazodibenzo[ad]cycloheptene. Some Insights into Aromatic Carbene–Arylcarbene Rearrangement
Authors: Tomioka Hideo , Kobayashi Noriyuki 
Published: July 2006

Abstract
Flash vacuum pyrolysis of the title diazo compound gives 4H-cyclopenta[def]phenanthrene, which is interpreted as indicating that dibenzo[ad]cycloheptatrienylidene (13) undergoes the carbene–carbene rearrangement to generate 4-phenanthrylcarbene. The reactivities of 13 are compared with those of other benzoannulated cycloheptatrienylidenes and discussed in terms of the effect of the benzo ring to the activation energy for the rearrangement.
The Effect of Hydrogen Sulfide on Acridine Hydrodenitrogenation on a Sulfided NiMo/Al2O3 Catalyst
Authors: Nagai Masatoshi 
Published: July 2006

Abstract
The effect of hydrogen sulfide on acridine hydrodenitrogenation over a sulfided NiMo/Al2O3 catalyst at 280–380 °C and 10.1 MPa total pressure was studied. The result showed that the presence of H2S depressed the total C–N hydrogenolysis at a low PH2S/PH2 ratio of 1.1–79×10−5, but that it rarely affected the C–N hydrogenolysis at a ratio above 0.003.
Theoretical Foundation of Prochirality. Chirogenic Sites in an Enantiospheric Orbit
Authors: Fujita Shinsaku 
Published: July 2006

Abstract
Prochirality is one of the inherent properties of an enantiospheric orbit that is designated by a coset representation G(/Gi). Desymmetrization of the G(/Gi) orbit is discussed to present a new concept “H-chirogenic site”. The chirogenic site in the G(/Gi) orbit is capable of producing a chiral H-molecule under the influence of an appropriate chiral reagent. The condition for the existence of such a chirogenic site is discussed. A convenient method using a desymmetrization lattice is presented for determining chirogenic sites.
Formation of Halide Complexes of Methyl- and Inorganic Germaniun(IV) in Aqueous Hydrohalogenic Acid Solutions
Authors: Sohrin Yoshiki 
Published: July 2006

Abstract
The reaction of methyl- and inorganic germanium(IV) hydroxides ((CH3)nGe(OH)4−n; n=0,1,2, or 3) with halide ions (X=Cl−, Br−, or I−) to form halide complexes ((CH3)nGeX4−n) in aqueous acidic solution has been investigated by liquid–liquid extraction, solid–liquid distribution (ion exchange), and 1H NMR spectrometry. It has been found that methylgermanium moieties are hard Lewis acids similarly to inorganic germanium(IV), because the stability constant of the halide complexes decreases in the order Cl−&gt;Br−&gt;I−. The stability constant for an X− ion increases as the number of methyl groups attached to the germanium atom increases. The species of inorganic-, mono-methyl-, and dimethylgermanium are nonionic and have a tetrahedral structure in HX solution, and OH− ions attached to the germanium atom are stepwise substituted by X− ions with an increase in HX activity. Trimethylgermanium alone forms a cation, when the activity of HX is not sufficiently high. These facts suggest that the transfer of a negative charge from methyl groups to the central germanium atom lowers the stability of the bond between the germanium atom (hard acid) and an OH− ion (hard base).
Temperature- or Pressure-Induced Structure Changes of a Spin Crossover Fe(II) Complex; [Fe(bpy)2(NCS)2]
Authors: Konno Michiko , Mikami-Kido Mami 
Published: July 2006

Abstract
The crystal structures of polymorph II of diisothiocyanatobis(2,2′-bipyridine)iron(II), [Fe(bpy)2(NCS)2], in the high- (298 K) and low-spin states (175, 110 K) were determined by an X-ray diffraction method. The crystal is orthorhombic, space group Pcnb and Z=4 over the entire temperature range. At 298 K, a=13.2044 (6), b=16.4820 (7), c=10.1086 (7) Å, U=2200.0 (2) Å3, Dc=1.462 g cm−3 and at 110 K, a=12.9842 (9), b=16.1067 (12), c=9.8938 (8) Å, U=2069.1 (3) Å3, Dc=1.555 g cm−3. The structures were refined to R=0.047, 0.044, and 0.042 at 298, 175, and 110 K, respectively. The difference in the average Fe–N bond lengths between high- and low-spin states is 0.17 Å. The pressure dependence of the absorption spectra was also measured up to 8.5 GPa using a diamond anvil cell. These results indicate that with increasing pressure the high-spin state at 1 atm starts to change to the low-spin state at 0.3 GPa and that its low-spin state reverts again to the high-spin state at around 3.3 GPa.
High Thermodynamic Diastereoselection in the Equilibration of Acyclic γ-Alkoxy α-Amino Nitriles
Authors: Inaba Takashi , Fujita Makoto , Ogura Katsuyuki 
Published: July 2006

Abstract
An equilibrium between two diastereomers of an acyclic γ-alkoxy α-amino nitrile was attained in chloroform, and the major component is always its (R*, S*)-isomer with high diastereoselectivity.
Reaction of Cyanoguanidine with Formaldehyde. V. Properties of Cyanoguanidine–Formaldehyde Resin as a Coagulating Agent of Anionic Colloidal Particles
Authors: Shiba Ryuichi , Takahashi Miyuki , Ebisuno Toichi , Shindou Yoichi , Takimoto Michiaki 
Published: July 2006

Abstract
The coagulation of anionic colloidal particles by the cyanoguanidine (CG)–formaldehyde resin has been reported to be caused by an electrostatic interaction of the (diaminomethylene)urea (DU) cation with an anionic surface charge of particles. Our results show that neither DU·HCl nor di-hydrochlorides of N,N′-methylenebis [N′-(diaminomethylene)urea] (Bis-DU·2HCl), itself, nor the resinous products of DU·HCl or Bis-DU·2HCl with formaldehyde, are such effective coagulating agents as the CG–formaldehyde resin and are not explicable only in terms of the electrostatic interaction. Gel-permeation chromatograms of the resins have revealed that the coagulation efficiency increased in proportion to the increase of the fraction of components having higher molecular weight, suggesting that components having higher molecular weight play an important role in coagulation due to the CG–formaldehyde resin.
Effect of Anions on the Epoxidation of Styrenes with H2O2 in the Presence of Ammonium Heptamolybdate(VI)– Dioctyltin Oxide Catalysts
Authors: Inoue Masami , Nakayama Eiichi , Nakamura Yuuko , Rengakuji Seichi , Nishibe Keiichi 
Published: July 2006

Abstract
The epoxidation of styrene, α-methylstyrene, β-methylstyrene, p-chlorostyrene, and m-divinylbenzene with H2O2 in the presence of ammonium heptamolybdate(VI)–dioctyltin oxide catalysts in CHCl3–H2O was studied. The addition of neutral salts, such as NaNO3 or Na2SO4, to the catalyst system prevented the successive hydration of styrene oxide once formed. The presence of KCl or NaCl almost suppressed the oxidation, while no substantial effect was observed in NaClO4. The various effects of these anions were related to the results concerning the coordination of anions to Mo(VI)-ions.
Direct Synthesis of Trimethoxysilane from Methanol and Hydrogen-Treated Silicon Using Copper(II) Chloride as a Catalyst
Authors: Suzuki Eiichi , Kamata Takatsugu , Ono Yoshio 
Published: July 2006

Abstract
When silicon, on which copper(II) chloride was supported, was pretreated under a hydrogen stream at 533 K and brought in contact with methanol at 533 K, trimethoxysilane was formed with an 89% selectivity and a complete silicon conversion in 5.5 h. Pits were formed on the silicon surface, and grew with increasing silicon conversion.
Ab Initio Study of Pyridyl Cations, Anions, and Radicals
Authors: Kikuchi Osamu , Hondo Yuji , Yokoyama Yukihiro , Morihashi Kenji , Nakayama Mitsunobu 
Published: July 2006

Abstract
Ab initio calculations were carried out for the 2-, 3-, and 4-pyridyl cations, anions, and radicals in order to examine their molecular structures and relative energies among three isomers. The 4-31G//3-21G calculations have predicted that 2-pyridyl cation, 4-pyridyl anion, and 2-pyridyl radical are most stable among the isomers.
Graph-Theoretical Analysis of the Cyclic Bicalicene Conjugated Systems
Authors: Aihara Jun-ichi 
Published: July 2006

Abstract
The so-called cyclic bicalicene is aromatic although it can be regarded as a perturbed [16]annulene. Graph-theoretical analysis shows that the aromaticity of this molecule arises primarily from three- and five-membered circuits and their combinations. The peripheral sixteenmembered circuit presumably destabilizes the conjugated system to a very slight extent.
Determination of Methane Concentration in Air Extracted from Antarctic Ice Core Samples
Authors: Tohjima Yasunori , Tominaga Takeshi , Makide Yoshihiro , Fujii Yoshiyuki 
Published: July 2006

Abstract
A convenient method was developed for detrmination of methane concentration in old air trapped in Antarctic ice core samples. The air was extracted with a stainless steel bellows pump after quick refreezing of melted ice samples and the methane was measured with a gas chromatograph with an FID. The averaged methane concentration in the Mizuho ice core at a depth of 330 m (ca. 3600 BP, 11 samples) was 750±20 ppbv.
Preparation of 3,3-Bis(phosphoryl)cyclopropenes
Authors: Yoshida Hiroshi , Aoyama Masanori , Utsumi Fumitaka , Ogata Tsuyoshi , Matsumoto Kiyoshi 
Published: July 2006

Abstract
The reaction of 1,2-diphenyl- and 1-methyl-2-phenyl-3,3-dichloro- or dibromocyclopropenes with trialkyl phosphites, dialkyl phenylphosphonites, and alkyl diphenylphosphinites afforded cyclopropenes with 3,3-diorganophosphorous substituents in moderate yields via double Arbuzov type reactions.
Synthesis of (E)- and (Z)-2,3-Bis(trifluoromethyl)allyl Alcohols by γ-Ray Irradiation of Hexafluoro-2-butyne with Alcohols and Some Reactions
Authors: Nishida Masakazu , Hayakawa Yoshio , Matsui Masaki , Shibata Katsuyoshi , Muramatsu Hiroshige 
Published: July 2006

Abstract
Radiation-induced addition reaction of alcohols to hexafluoro-2-butyne provided (E)- and (Z)-2,3-bis(trifluoromethyl)allyl alcohols, which were dehydrated to afford 1,2-bis(trifluoromethyl)-1,3-butadienes. Thermal cyclization of 3-methyl-1,2-bis(trifluoromethyl)-1,3-butadiene afforded 1-methyl-2,3-bis(trifluoromethyl)clobutene.