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Yutaka Ikushima, Norio Saito, Kiyotaka Hatakeda, Shota Ito, Takashi As ...
1985 Volume 14 Issue 12 Pages
1789-1792
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The extraction of triglycerides with supercritical carbon dioxide (SC–CO
2) was carried out at pressures of 9.8–27.0 MPa and temperatures of 313 K and 333 K. The addition of ethyl acetate to CO
2 was found to produce a supercritical fluid that had an efficiency for the separation of triolein from trioleln–tristearin mixtures.
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Tamon Okano, Masahiko Makino, Hisatoshi Konishi, Jitsuo Kiji
1985 Volume 14 Issue 12 Pages
1793-1796
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The use of pyridines as a solvent greatly enhances the catalytic activity of RhCl(CO)(PPh
3)
2 for the hydroformylation of formaldehyde. The yield of glycol aldehyde goes up to over 90% under mild conditions. At temperatures above 100 °C, however, the reaction is complicated by the aldol addition of glycol aldehyde yielding straight-chain sugars.
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Teruhiko Ogata, Mitsugu Yoshikawa, Kazuhito Fujii
1985 Volume 14 Issue 12 Pages
1797-1798
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The microwave spectrum of H
2C=C=CHF has been studied in the 40 to 45 GHz region and
b-type
Q-branch transitions for the ground vibrational state has been assigned. The rotational constants are
A=46276.658(10) MHz,
B=4300.038(3) MHz, and
C=4039.161(3) MHz. The dipole moments are μ
a=1.55(2) D, μ
b=0.835(5) D, and μ
total=1.76(2) D. The molecular structure which reproduces the observed moments of inertia is calculated.
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Masakazu Anpo, Takahito Shima, Yutaka Kubokawa
1985 Volume 14 Issue 12 Pages
1799-1802
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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ESR and photoluminescence studies have clarified that UV irradiation of the small TiO
2 particle in the presence of H
2O leads to the formation of \overset•OH radicals, which are formed by trapping of photo-formed holes by the surface OH
− groups.
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Kiyomi Ozawa, Shigeru Ishii, Masataka Hatanaka
1985 Volume 14 Issue 12 Pages
1803-1804
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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6-Phenoxy-2-pyridinecarbaldehyde was prepared in good yields through a few reaction steps utilizing Grignard reaction which has been regarded disadvantageous for preparation of pyridinecarbaldehydes.
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Sei’ichi Arakawa, Hirofumi Kondo, Jun’etsu Seto
1985 Volume 14 Issue 12 Pages
1805-1808
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Novel photochromic compounds, indolinospirobenzothiopyrans, were prepared and their properties in polymer films were examined. The absorption bands of the colored form lie around 100 nm deeper in the long-wave region of the spectrum than are the case with the common spiropyrans.
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Toshio Mukai, Akinori Konno, Tsutomu Kumagai, Kyosuke Satake
1985 Volume 14 Issue 12 Pages
1809-1812
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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A new approach to 1,4-dihydropyrrolo[3,2-b]pyrrole-2,5-dione derivatives, which are regarded to belong to an interesting redox system, is described. Reduction potentials along with chemical and spectral properties of these derivatives are presented, and the capability as electron acceptors is also discussed.
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Yukito Murakami, Yoshio Hisaeda, Takako Tashiro, Yoshihisa Matsuda
1985 Volume 14 Issue 12 Pages
1813-1816
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The controlled-potential electrolysis of 2,2-bis(ethoxycarbonyl)-1-bromopropane at −1.50 V vs. SCE as catalyzed by a hydrophobic vitamin B
12 in DMF proceeded to give 1,2-bis(ethoxycarbonyl)propane as a major product in the presence of acetic acid under argon atmosphere in the dark.
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Naotoshi Nakashima, Nobuo Kimizuka, Toyoki Kunitake
1985 Volume 14 Issue 12 Pages
1817-1820
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Bilayer membranes of double-chained ammonium amphiphiles which contain the naphthalene unit display characteristic spectral (absorption and emission) behavior and efficient energy transfer to membrane-bound anionic acceptors.
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Masaru Tada, Kunimi Inoue, Keiji Sugawara, Mitsunori Hiratsuka, Masami ...
1985 Volume 14 Issue 12 Pages
1821-1824
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The possible involvement of cobalt in the radical rearrangement of a thioester group was tested by using cobaloxime as a mimic of cobalamin. The coexistence of cobaloxime(II) species stimulates the rearrangement of the thioester group. A coordinative interaction between sulfur and cobalt is proposed for the assistance of this rearrangement.
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Tomokazu Matsue, Tetsuya Kato, Uichi Akiba, Tetsuo Osa
1985 Volume 14 Issue 12 Pages
1825-1828
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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An electrochemical investigation of methyl viologen-cyclodextrin (CD) system has revealed that β-CD has outstanding ability to include the 2e reduced species of methyl viologen in aqueous solution (formation constant: 1400 dm
3 mol
−1) in comparison with other CDs and the inclusion solubilizes and stabilizes the electrogenerated species.
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Syun-ichi Kiyooka, Akinori Miyauchi
1985 Volume 14 Issue 12 Pages
1829-1830
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Acylgermanes are prepared from the corresponding esters with triphenylgermyllithium at room temperature in good yields.
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Yasuhiro Shimizu, Yoshiki Fukuyama, Hiromichi Arai
1985 Volume 14 Issue 12 Pages
1831-1834
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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A lean-burn oxygen sensor composed of two different sintered semiconductors was made by electrically contacting the discs of SrAl
0.01Ti
0.99O
3 and Cr
2O
3 with Pt mesh by mechanical pressing. The resistance-λ′ characteristic of the connected device was investigated in the exhaust gas of oxygen-propane combustion, where λ′ stands for the oxygen excess ratio. It was found that the SrAl
0.01Ti
0.99O
3Cr
2O
3 device had promising properties for a lean-burn oxygen sensor, because the device exhibited a large change in the resistance in the lean-burn region with a negligible change in the rich-burn region.
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Katsuomi Takehira, Takashi Hayakawa, Hideo Orita
1985 Volume 14 Issue 12 Pages
1835-1838
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Dichlorobis(
N,
N-dialkylacetamide)palladium(II) complex catalyzes the oxidation of cyclopentene to cyclopentanone by molecular oxygen in alcoholic solvent, in which one atom of molecular oxygen in incorporated.
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Hideo Kurosawa, Akira Urabe
1985 Volume 14 Issue 12 Pages
1839-1840
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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η
1-Allyl(aryl)palladium complexes react with some electrophiles to result in the selective Pd-allyl bond cleavage with 1,3-transposition, while the corresponding η
3-allyl(aryl)palladiums and the electrophiles give rise to the selective Pd-Ar bond cleavage. The η
1-allyl complexes also react with CCl
4 and CHCl
3 under very mild conditions to give good yields of CH
2=CHCHR(CR′Cl
2) (R= H, Me; R′= Cl, H).
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Mitsuo Kira, Hiroko Nakazawa, Hideki Sakurai
1985 Volume 14 Issue 12 Pages
1841-1844
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Cation radicals of several alkyl- and silyl-substituted benzenes in frozen trichlorofluoromethane were investigated by ESR. All the substituents were found to act as an electron donor to the benzene cation, preferring the M–H σ bond eclipsing pπ orbitals. The results may afford a good evidence for the conformational consequences of hyperconjugation.
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Mitsuo Kira, Hiroko Nakazawa, Hideki Sakurai
1985 Volume 14 Issue 12 Pages
1845-1848
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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An ESR study of cation radicals of allyltrimethylsilane and derivatives generated by
60Co γ-irradiation in frozen trichlorofluoromethane revealed the large polarization of the SOMO as a consequence of the enhanced σ–π conjugation.
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Boonsong Kongkathip, Rongsan Sookkho, Ngampong Kongkathip
1985 Volume 14 Issue 12 Pages
1849-1850
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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(±)-Frontalin was synthesized in a few steps sequence starting from ethyl acetoacetate involving intramolecular cyclization using palladium chloride as catalyst.
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Masashi Kijima, Yoko Nambu, Takeshi Endo
1985 Volume 14 Issue 12 Pages
1851-1854
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Simple dithiols-ferrous chloride or lipoamide-ferrous chloride were found to be effective catalysts for the selective reduction of substituted alkynes to alkenes with sodium borohydride presumably by forming active dithiol-Fe(II) complexes.
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Chyongjin Pac, Tomohito Ohtsuki, Takao Fukunaga, Shozo Yanagida, Hiros ...
1985 Volume 14 Issue 12 Pages
1855-1858
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Photosensitized reactions of
cis-1,2-diphenylcyclobutane by aromatic nitriles, which mainly give styrene along with the
trans isomer and 1-phenyltetralin revealed divergent solvent effects depending on the sensitizers.
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Hiroyuki Ishida, Noritoshi Matsuhashi, Ryuichi Ikeda, Daiyu Nakamura
1985 Volume 14 Issue 12 Pages
1859-1862
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The
1H NMR parameters of solid methylammonium sulfate were determined at various temperatures. A first-order phase transition was located at 428 K for this salt. Above this temperature, the cations were found to perform self-diffusion as well as overall rotation about their center of gravity.
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Toshio Ogino, Tsuyoshi Kazama, Tsuyoshi Kobayashi
1985 Volume 14 Issue 12 Pages
1863-1866
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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A kinetic study on the decomposition of an organomanganese intermediate detected during the permanganate oxidation of endo-dicyclopentadiene in nonaqueous solution using quaternary ammonium salts revealed that the intermediate exists as ion pairs with quaternary ammonium ions and the stability of the intermediate inversely depends on the size of the cations.
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Fumio Toda, Mushfiquddin Khan, Thomas C. W. Mak
1985 Volume 14 Issue 12 Pages
1867-1870
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The title novel wine cup-shaped host molecule was found to include a wide variety of guest compounds, and X-ray crystal structure of its 1:1 methanol complex was determined.
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Masahiro Ohshima, Masahiro Murakami, Teruaki Mukaiyama
1985 Volume 14 Issue 12 Pages
1871-1874
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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In the presence of trityl tetrafluoroborate, silyl enol ethers react with thioacetals to give the corresponding γ-ketosulfides in good yields with high stereoselectivity. In a similar manner, γ-ketosulfides are obtained in good yields by the one pot reaction directly from ketones and thioacetals via tin(II) enolates.
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Susumu Sato, Isamu Matsuda, Yusuke Izumi
1985 Volume 14 Issue 12 Pages
1875-1878
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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A convenient α-hydroxyalkylation of vinyl ketones is accomplished by the coupling reaction of vinyl ketone and aldehyde, where rhodium(I) enolate derived from HRh(PPh
3)
4 plays an important role in the carbon–carbon bond forming step.
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Noboru Morita, Toyonobu Asao, Akio Tajiri, Hideo Sotokawa, Masahiro Ha ...
1985 Volume 14 Issue 12 Pages
1879-1882
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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2-Substituted tropones reacted with Fe
2(CO)
9 or with Fe(CO)
5 under irradiation to give iron tricarbonyl complexes coordinated at unsubstituted diene moiety. 2-Bromotropone afforded another iron tricarbonyl complex coordinated at substituted diene as a minor product. 2-Methyl-, 2-phenyl-, and 2-tosyloxytropones yielded di-π-allyl type diiron hexacarbonyl complexes. Furthermore, 2-dialkylaminotropones gave diiron hexacarbonyl complexes as a major product containing a new enamine type complex.
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Junzo Otera, Hiromitsu Misawa, Tadakatsu Mandai, Takashi Onishi, Shige ...
1985 Volume 14 Issue 12 Pages
1883-1886
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Stereocontrolled convergent synthesis of vitamin A was achieved by the double elimination method employing the C
10 sulfone and the C
10 aldehydes as starting materials. Thus the all-
trans and 13-
cis isomers were obtained with the stereochemical purity of 95% and 90%, respectively.
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Ryu Sato, Mikiya Nakayama, Yoshiki Yuzawa, Takehiko Goto, Minoru Saito
1985 Volume 14 Issue 12 Pages
1887-1890
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Various 1,3-diimonoisoindolines were obtained by treating
N-(2-cyanobenzylidene)anilines with elemental sulfur in liquid ammonia and amines. A novel route to isoindoline from 2-cyanobenzaldehyde was developed.
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Kazuhiko Saigo, Yun Chen, Noriyuki Yonezawa, Kouzou Tachibana, Toshio ...
1985 Volume 14 Issue 12 Pages
1891-1894
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Optically active polyamides having (−)-
anti head-to-head coumarin dimer component were found to be useful as chiral packing materials for direct HPLC resolution of enantiomers such as
trans-stilbene oxide, mandelamide, benzyl mandelate, benzoin,
trans-1,2-cyclobutanedicarboxanilide, and 2,2′-dihydroxy-1,1′-binaphthyl.
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Makoto Onaka, Hiroshi Kita, Yusuke Izumi
1985 Volume 14 Issue 12 Pages
1895-1898
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Decomposition of aryldiazomethanes is catalyzed by copper ion-exchanged Y-type zeolite to afford
cis-1,2-diarylethylenes in high selectivity. The catalytic activity and selectivity are found to be affected by the exchange level of copper ions in zeolite and the solvent used.
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Yukito Murakami, Jun-ichi Kikuchi, Toshihiko Takaki
1985 Volume 14 Issue 12 Pages
1899-1902
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Participation of the nonlamellar phase in the fusion process of bilayer membranes was examined with an equimolar mixture of sodium
N,
N-dihexadecyl-
Nα-(6-sulfohexanoyl)-
L-alaninamide and
N,
N-dihexadecyl-
Nα-[6-(dimethylamino)hexanoyl]-
L-alaninamide in aqueous media by means of electron microscopy, differential scanning calorimetry, and turbidity measurements.
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Masako Sasaki, Toshibumi Sakata, Mitsunori Sukigara
1985 Volume 14 Issue 12 Pages
1903-1906
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The effective dielectric constants of SDS micelle, DMPC liposome and DNA for 8-methoxypsoralen were estimated to be 60,32, and 70 respectively by fluorophotometry.
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Kunio Hiroi, Masahiko Otsuka, Shuko Sato
1985 Volume 14 Issue 12 Pages
1907-1910
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Treatment of the dianions of cyclic ketoximes with diphenyl disulfide underwent a regioselective sulfenylation at the syn α-carbons. Regioselective alkylation of cyclic ketoxime dianions, followed by sulfenylation with diphenyl disulfide, produced α-alkyl-α′-phenylsulfenyl ketoximes. A Beckmann fragmentation of these sulfenylated ketoximes gave ring cleaved products. This procedure provides a synthetically useful method for the regioselective ring cleavage, remaining valuable functionalities.
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Nobuo Takahashi, Akihiko Mijin, Mitomu Miyauchi, Akira Sato
1985 Volume 14 Issue 12 Pages
1911-1912
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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On the exposure of fresh Rh–Y zeolite to CO, the formation of the rhodium species responsible for the TPD peak of CO at 473–500 K, which was followed by the conversion into the second type rhodium species responsible for the peak at 563–583 K, was observed.
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Eisuke Ogata, Kazuya Hatakeyama, Yoshio Kamiya
1985 Volume 14 Issue 12 Pages
1913-1916
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Iron catalysts obtained by the CO pretreatment of iron oxide and iron ore suspended in hydrocarbon solvents presented high catalytic activities for the hydroliquefaction of coal and hydrogenation of phenanthrene.
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Nagao Kobayashi, Hiroshi Saiki, Tetsuo Osa
1985 Volume 14 Issue 12 Pages
1917-1920
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The water-soluble manganese porphyrin in the title was found to catalyze electroreduction of oxygen. The reaction could be explained by an electrochemical (EC) catalytic regeneration mechanism, and at the porphyrin concentrations of more than
ca. 5×10
−5 mol dm
−3 two-electron reduction was attained. Electronic absorption and magnetic circular dichroism (MCD) spectroscopies have suggested that the active species of the porphyrin is in a high-spin divalent state.
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Hidefumi Hirai, Naoki Toshima, Hiroyuki Asanuma
1985 Volume 14 Issue 12 Pages
1921-1924
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Iron(II) ions (14.7 mmol) immobilized on chelate resin (7.53 g) adsorbed 78% of total nitrogen oxide contained in 6 dm
3 of nitrogen at the concentration of 1000 ppm at 25 °C. The nitrogen oxide was released rapidly by 83% of that adsorbed by raising the temperature from 25 °C to 80 °C. Adsorption and desorption cycles on this adsorbent could be performed repeatedly without deterioration.
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Kin-ichi Tadano, Yoko Idogaki, Hirohiko Yamada, Tetsuo Suami
1985 Volume 14 Issue 12 Pages
1925-1928
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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The ortho ester Claisen rearrangement of
D-
ribo- or
L-
lyxo- hexofuranose derivative which possesses an allyl alcohol functionality on C-3, proceeds stereoselectively to give a 3-
C-dialkylated product. The stereochemistry of a newly introduced quaternary center of the product was unambiguously established by a chemical modification.
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Tasuku Akagi, Keiichiro Fuwa, Hiroki Haraguchi
1985 Volume 14 Issue 12 Pages
1929-1932
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Surface compositions of suspended particles in estuarine and coastal waters were examined by X-ray photoelectron spectroscopy (XPS). It has been found that the surface compositions markedly changed, depending on the sampling locations in the estuarine and coastal areas.
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Yukio Masaki, Yuzuru Serizawa, Kenji Kaji
1985 Volume 14 Issue 12 Pages
1933-1936
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Reactions of diethylaluminium thiophenoxide (Et
2AlSPh) with acetals of several types, in which acyclic, cyclic, and bicyclic ones are involved, were examined in comparison with the known reaction using thiophenol in the presence of Lewis acid and found to provide a new and efficient method for preparation of monothioacetals.
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Yasuhiko Kawamura, Tsutomu Kumagai, Toshio Murai
1985 Volume 14 Issue 12 Pages
1937-1940
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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2-Isoxazolines with electron-withdrawing substituents on the 3-aryl moiety (p-cyanophenyl, p-methoxycarbonylphenyl) gave upon irradiation in indene a mixture of syn and anti cycloadducts regiospecifically toward the C=N double bond via their exciplex intermediate.
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Masaaki Iwata, Hiroyoshi Kuzuhara
1985 Volume 14 Issue 12 Pages
1941-1942
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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Chiral cyclic imino acid derivatives were prepared from unsymmetrical bis(
N-nitrososulfonamides) of diaminocarboxylic acids,
L-lysine and
L-ornithine, in good yields through kinetically controlled regioselective
N-nitrososulfonamide-sulfonate rearrangement.
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Reizo Kato, Hayao Kobayashi, Akiko Kobayashi, Yukiyoshi Sasaki
1985 Volume 14 Issue 12 Pages
1943-1946
Published: December 05, 1985
Released on J-STAGE: March 27, 2006
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In the crystal of (BEDSe-TSeF)PF
6 (space group; C2/m), there exists face-to-face overlap of the BEDSe-TSeF molecules along the c axis. Intermolecular interaction by the short Se···Se contact is also observed in the ⟨1,1,2⟩ and ⟨1,1,4⟩ directions, which results in the three-dimensional Se···Se network.
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