-
Masamichi Fujihira, Yoshiharu Satoh, Tetsuo Osa
1981 Volume 10 Issue 8 Pages
1053-1056
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Heterogeneous photocatalytic oxidation of aromatic compounds by H
2O
2 formed from dissolved O
2 in the presence of illuminated TiO
2 powders was investigated with reference to the Fenton reaction. All the products expected from the Fenton reaction were obtained. The effect of other semiconductor materials and Fe
2+ on the reaction was also investigated.
View full abstract
-
Tomitsugu Taketatsu
1981 Volume 10 Issue 8 Pages
1057-1058
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
The distribution behavior of europium between micellar and bulk phases was investigated in aqueous solutions of europium-TTA and europium-TTA-TOPO complexes with nona-oxyethylene dodecyl ether by spectrophotofluorimetric method. Apparent equilibrium constants of these complexes were estimated.
View full abstract
-
Toshinobu Yogo, Junji Koshino, Akira Suzuki
1981 Volume 10 Issue 8 Pages
1059-1060
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
The reaction of alkyl fluorosulfonates with lithium 1,2-dimethoxyethenyltrialkylborates readily prepared from organoboranes gives corresponding ketones in good yields.
View full abstract
-
Tadashi Yonemitsu, Kiyotaka Kubo
1981 Volume 10 Issue 8 Pages
1061-1062
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
90 MHz
1H-NMR spectrum of liquid benzene-d
1 has been measured and completely analysed as an AB
2C
2X (X=D,I=1) system. The deuterium isotopic shifts relative to internal benzene, Δ
A=−1.4 ppb, Δ
B=−1.3 ppb and Δ
C=+0.3 ppb, have been determined.
View full abstract
-
Takayuki Suga, Takamitsu Yoshioka, Toshifumi Hirata, Tadashi Aoki
1981 Volume 10 Issue 8 Pages
1063-1066
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
The C-4 configuration of herqueinone was determined to be
s on the basis of the anisotropic effect of the carbonyl group at the 5-position on the geminal dimethyl groups in the
1H NMR spectra. Also, the full assignment of the
13C NMR signals of herqueinone was established by the selective
1H decoupling and the
13C-labeling techniques.
View full abstract
-
Yoshihisa Watanabe, Yasushi Tsuji, Naoki Suzuki
1981 Volume 10 Issue 8 Pages
1067-1068
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Nitrobenzene reacts with saturated alcohols in the presence of a catalytic amount of ruthenium complex at 180°C to give 2,3-dialkylquinolines and
N-alkylanilines in good yields. The reaction appears to include reduction of nitrobenzene with the alcohols by hydrogen transfer reaction.
View full abstract
-
Shuji Tomoda, Yoshito Takeuchi, Yujiro Nomura
1981 Volume 10 Issue 8 Pages
1069-1070
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Treatment of benzeneselenenyl chloride with trimethylsilyl cyanide in various organic solvents provided phenyl selenocyanate in virtually quantitative yield. The reaction presents a very simple preparation of the useful selenenylation agent.
View full abstract
-
Kagetoshi Yamamoto, Yuji Matsue, Ichiro Murata
1981 Volume 10 Issue 8 Pages
1071-1074
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
9
H-Azuleno[l,2,3-
ij]naphthalen-9-one (
3a) and 8
H-Azuleno [1,2 , 3-
ij]naphthalen-8-one (
3b), consisting of tropone and acenaphthylene have been synthesized. These ketones were found to be highly polarized and highly basic compounds.
View full abstract
-
Yuko Hasegawa, Koji Suzuki, Tatsuya Sekine
1981 Volume 10 Issue 8 Pages
1075-1078
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Solvent extraction of silver(I) with dihenzo-18-crown-6 (E) as ion-pairs with picrate ion (A
−) into chloroform was found to be synergistically enhanced by trioctylphosphine oxide (TOPO). This was concluded to be due to an adduct formation of the cationic silver(I) complex with TOPO, AgE(topo)
2+, in this organic solvent.
View full abstract
-
Takakazu Yamamoto, Kenichi Sanechika, Akio Yamamoto
1981 Volume 10 Issue 8 Pages
1079-1082
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Poly(2,4-thienylene) is prepared by Ni-catalyzed dehalogenation polymerization of 2,4-dibromothiophene with Mg. Comparison of chemical and physical properties of poly(2,4-thienylene) with those of Poly(2,5-thienylene) indicates that π-electrons of the latter polymer are delocalized along the polymer chain, whereas those of the former polymer are not. Poly(2,4-thienylene) is converted into a semiconductor by doping with SO
3.
View full abstract
-
Tamon Okano, Kensuke Fujiwara, Hisatoshi Konishi, Jitsuo Kiji
1981 Volume 10 Issue 8 Pages
1083-1086
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
The ionic complex [Ru(cod)py
4](BPh
4)
2 (cod = 1,5-cyclooctadiene, py=pyridine) has been shown to be an efficient catalyst for the reduction of nitrobenzenes with carbon monoxide and water, which gives anilines selectively.
View full abstract
-
Mitsuo Sekine, Akiko Kume, Masashi Nakajima, Tsujiaki Hata
1981 Volume 10 Issue 8 Pages
1087-1090
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Acylations of various enolates by means of diethyl acylphosphonates were described. For the acylation of acetophenone, lithium bis(trimethylsilyl)amide (LSA) was found to be suitable as the base. The scope and limitation of the benzoylation using diethyl benzoylphosphonates were also described.
View full abstract
-
Norio Teramae, Masayuki Hiroguchi, Shigeyuki Tanaka
1981 Volume 10 Issue 8 Pages
1091-1092
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
The Helmholtz resonance effect of the photoacoustic cell and the effect of the thermal properties of samples in the Fourier transform infrared photoacoustic spectroscopy have been discussed. Infrared photoacoustic spectra of several kinds of polymers have been measured without troublesome sample preparations.
View full abstract
-
Francisco Camps, José Coll, Adolfo Cortel
1981 Volume 10 Issue 8 Pages
1093-1096
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Ajugareptansone A and B,
2 and
3, two new
neo-clerodane diterpenoids have been isolated from
Ajuga reptans, and their structures have been elucidated by spectral methods and X-ray diffraction analysis. Under conditions used for isolation and purification of these compounds, formation of
3 from
2 has been observed.
View full abstract
-
Akihiko Matsuo, Naoji Kubota, Mitsuru Nakayama, Shûichi Hayashi
1981 Volume 10 Issue 8 Pages
1097-1100
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
A sesquiterpene aldehyde, (−)-lepidozenal, having a novel
trans-fused bicyclo[8.1.0]undecane carbon skeleton has been isolated from the liverwort
Lepidozia vitvea, and its structure and absolute configuration have been shown to be (6
S,7
R)-lepidoza-1(10)
E,4
E-dien-14-al, on the basis of the chemical and spectral evidence.
View full abstract
-
Tasuku Ito, Haruko Ito, Koshiro Toriumi
1981 Volume 10 Issue 8 Pages
1101-1104
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
The title compound obtained initially from the reaction mixture has a basket type configuration, but successive slow recrystallizations from weakly acidic aqueous solution resulted in structural isomerization to a thermodynamically more stable structure.
View full abstract
-
Keiji Kobayashi, Kiyoshi Mutai
1981 Volume 10 Issue 8 Pages
1105-1108
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Treatment of 2,5-diphenyl-1,4-dithiin-1-oxide with hydrochloric acid in dioxane caused a novel skeletal rearrangement to give 2-benzoyl-4-phenyl-1,3-dithiole together with the deoxygenation products. The reaction with gaseous hydrogen chloride in methanol afforded the adduct due to the additive Pummerer rearrangement, which was also converted into the 1,3-dithiole.
View full abstract
-
Taira Harada, Teruaki Mukaiyama
1981 Volume 10 Issue 8 Pages
1109-1110
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Successive treatment of allyltin difluoroiodide, formed in situ by the oxidative addition of stannous fluoride to allyliodide, with 1,2-
O-isopropylidene-
D-glyceraldehyde and phenoxyacetyl chloride results in the predominant formation of erythro homoallylester, which is in turn converted into 2-deoxy-
D-ribose.
View full abstract
-
Ken-ichi Machida, Gin-ya Adachi, Jiro Shiokawa, Masahiko Shimada, Mits ...
1981 Volume 10 Issue 8 Pages
1111-1114
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
The high-pressure polymorphism of EuSiO
3 was studied up to a pressure of 80 kb at 1000–1400°C. Two high-pressure phases were obtained in addition to the atmospheric one: α-EuSiO
3 was transformed into δ and δ′ forms at about 60 and 70 kb, respectively. Their crystal data were determined by means of X-ray diffraction analyses.
View full abstract
-
Hitomi Suzuki, Hisako Abe, Nobuko Ohmasa, Atsuhiro Osuka
1981 Volume 10 Issue 8 Pages
1115-1116
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
When heated in hexamethylphosphoric triamide at 80–90°C, preferably in the presence of copper(I) iodide, moderately activated iodoarenes undergo nucleophilic attack by benzenetellurolate ion, giving the corresponding unsymmetrical diaryl tellurides in fair to good yields.
View full abstract
-
Yoshihiro Sasaki
1981 Volume 10 Issue 8 Pages
1117-1120
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Reactions of bis(α-furildioximato)iron(II), Fe(FrH)
2(X)
2, (X=pyridine, 4-cyanopyridine, 3-chloropyridine, 4-chloropyridine, 4-methylpyridine, 1-methylimidazole and butylamine) with carbon monoxide was studied kinetically in chloroform solutions. The reactions proceeded reversibly through a dissociative mechanism. The axial ligand-dissociation rate constants and the activation parameters of Fe(FrH)
2(X)
2 and Fe(FrH)
2(X)(CO) were determined and discussed in terms of basicity of bases (X).
View full abstract
-
Tatsuya Shono, Yoshihiro Matsumura, Kenji Tsubata, Jiro Takata
1981 Volume 10 Issue 8 Pages
1121-1124
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
One step synthesis of α-aminoalkylfurans was achieved by the reaction of α-methoxyurethanes or α-methoxyamides with furan. This method was applied to an efficient synthesis of pyridoxine.
View full abstract
-
Akio Murai, Atsushi Abiko, Koji Kato, Tadashi Masamune
1981 Volume 10 Issue 8 Pages
1125-1128
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Cationic cyclization of bromohydrins of geranonitrile and homogeranonitrile in the presence of boron trifluoride complexes proceeded smoothly, giving mixtures of bromo cyclic olefins in satisfactory yields. This cyclization method was applied to the synthesis of (±)-snyderols.
View full abstract
-
Teruaki Mukaiyama, Masahiro Murakami
1981 Volume 10 Issue 8 Pages
1129-1132
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
An ester enolate anion was generated in situ by the successive treatment of ethoxyacetylene with mercury(II) chloride, pyridine-1-oxide and zinc dust, and the zinc enolate thus formed further reacted with aldehydes to give α-chloro-β-hydroxyesters.
View full abstract
-
Kazuhiro Maruyama, Hiroshi Tsukube
1981 Volume 10 Issue 8 Pages
1133-1134
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
A series of bathophenanthroline metal complexes effectively mediated electron transport, coupled with their redox properties.
View full abstract
-
Toshio Sato, Kouichi Naruse, Masashi Enokiya, Tamotsu Fujisawa
1981 Volume 10 Issue 8 Pages
1135-1138
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Benzyl ketones were obtained in good yields from benzyl bromide and acyl chlorides by the combined use of Zn and a palladium catalyst under mild conditions.
View full abstract
-
Noboru Ono, Hideyoshi Miyake, Rui Tamura, Isami Hamamoto, Aritsune Kaj ...
1981 Volume 10 Issue 8 Pages
1139-1142
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Vicinal dinitro compounds (
1) or β-nitro sulfones (
2) are converted to olefins in good yields on treatment with tributyltin hydride. This elimination proceeds by way of an electron transfer chain mechanism. The elimination from
1 is nonstereospecific and the elimination from
2 is stereospecific.
View full abstract
-
Junko Yamawaki, Takashi Ando, Terukiyo Hanafusa
1981 Volume 10 Issue 8 Pages
1143-1146
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Alumina coated with potassium fluoride promotes smooth N-alkylation of carboxamides, lactams, and other
N-heterocycles with alkyl halides or dialkyl sulfate under mild conditions.
View full abstract
-
Hirofumi Itoh, Tadashi Hattori, Yuichi Murakami
1981 Volume 10 Issue 8 Pages
1147-1148
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Temperature-programmed desorption of ammonia on mordenites has been examined. The amount and strength of acid sites of mordenites can be quantitatively determined by the TPD method. The strong acid sites of H-mordenite are selectively ion-exchanged with potassium ions.
View full abstract
-
Yotaro Morishima, Masanao Isono, Yoshihiro Itoh, Shun-ichi Nozakura
1981 Volume 10 Issue 8 Pages
1149-1152
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Merocyanine (Mc) and rhodamine B (Rh) were incorporated into polyethylenimine (PEI) and poly(vinyl alcohol) (PVA) by using diethylphosphoryl cyanide or 1-methyl-2-chloropyridinium iodide as the coupling reagents. Under the illumination of visible light, SnO
2 OTE (Optically Transparent Electrode) coated with PEI-Rh film exhibited remarkable spectrally sensitized photocurrent, and Pt electrodes coated with PVA-Mc and PEI-Mc films showed photocathodic currents.
View full abstract
-
Kazue Satoh, Tadashi Miyasaka
1981 Volume 10 Issue 8 Pages
1153-1156
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Treatment of thiazolo[3,2-
b]pyridazinium perchlorates with hydrazine hydrate in acetonitrile afforded the title compounds and several products depending upon its reaction time and temperature and difference of substituent. Catalytic reduction of the tetrazenes gave 2
H-3,4-dihydropyridazino[6,1-
c] triazines. Oxidation with 30% H
2O
2 yielded pyridazino[6,1-
c]-3-triazinones.
View full abstract
-
Yasuo Kikugawa
1981 Volume 10 Issue 8 Pages
1157-1158
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
A mixture of thiols and aldehydes or ketones was converted into sulfides with pyridine-borane in trifluoroacetic acid.
View full abstract
-
Tamotsu Fujisawa, Atsunari Noda, Tatsuo Kawara, Toshio Sato
1981 Volume 10 Issue 8 Pages
1159-1160
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Trapping of an enolate anion, formed by the Michael addition, with methanesulfinyl chloride and subsequent desulfinylation is found to be a useful method for the synthesis of various α,β-unsaturated carbonyl compounds. Synthetic utility of this method is demonstrated in the synthesis of geraniol, nerol, farnesol, and dihydrojasmone.
View full abstract
-
Yasuo Inoue, Takao Kuramochi, Keiichi Imakubo
1981 Volume 10 Issue 8 Pages
1161-1164
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Tendency of protonated 1,
N6-ethenoadenosine to undergo deactivation of the fluorescence at 77 K is greatly decreased by the replacement of an N-1 nitrogen atom by a CH group. This phenomenon is discussed with reference to intramolecular proton transfer between N-1 and N-9 of the protonated 1,
N6-ethenoadenosine in the excited state even at 77 K.
View full abstract
-
Mitsunori Oda, Noboru Morita, Toyonobu Asao
1981 Volume 10 Issue 8 Pages
1165-1168
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Cycloocta[
d]tropolone (
4) was synthesized by hydrolysis of an adduct of 1
H-cyclopentacyclooctene and dichloroketene. The tropolone was found to exist as a mixture of valence bond isomers (
4a) and (
4b).
View full abstract
-
Jiro Tsuji, Koji Sato, Hideo Nagashima
1981 Volume 10 Issue 8 Pages
1169-1170
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Addition reaction of CCl
4, CCl
3Br, and CCl
3CO
2Me to olefins proceeded under mild conditions to afford 1 : 1 adduct in high yields by using palladium–phosphine complexes as a catalyst in the presence of bases. The reaction proceeded even at room temperature.
View full abstract
-
Hideo Nagashima, Jiro Tsuji
1981 Volume 10 Issue 8 Pages
1171-1172
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Pd(OAc)
2 and PdCl
2 are good catalyst for the oxidation of alcohols to carbonyl compounds with CCl
4, in the presence of bases. Primary and secondary alcohols are oxidized to esters and ketones in high yields, respectively.
View full abstract
-
Toshinobu Imanaka, Yukihiro Katoh, Yasuaki Okamoto, Shiichiro Teranish ...
1981 Volume 10 Issue 8 Pages
1173-1176
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
The catalytic conversion of ethylbenzene into styrene and hydrogen has been studied over various supported molybdenum catalysts. MoO
3/MgO catalysts exhibited remarkably high activity, selectivity, and resistivity against sulfur species even in the absence of additives. The relationships between the surface structure and the catalytic activity of the MoO
3/MgO catalysts were also studied by XPS.
View full abstract
-
Shigeru Takano, Yumihiko Yano, Waichiro Tagaki
1981 Volume 10 Issue 8 Pages
1177-1180
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Tri, tetra, and pentadentate ligands containing imidazole groups were prepared and the oxygenation of their cobalt(II) complexes was briefly investigated.
View full abstract
-
Takeshi Sakurai, Katsuichiro Narisako, Akitsugu Nakahara
1981 Volume 10 Issue 8 Pages
1181-1182
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Two molecules of the copper(II) complex chelated with a tripod-like ligand, tris(2-benz[
d]imidazolylmethyl)amine are bridged by
p-chlorophenolate in acetone to form a binuclear copper(II) complex, in which two copper(II)’s varied from trigonal bipyramidal structure to square pyramidal one, losing anisotropic feature on ESR spectrum and exhibiting lowered magnetic moment of 1.7 B. M. (B. M.=9.274×10
−24 A m
2)
View full abstract
-
Kikumasa Sato, Osamu Miyamoto, Seiichi Inoue, Kiyoshi Honda
1981 Volume 10 Issue 8 Pages
1183-1184
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
A stereospecific synthesis of 1-acetoxy-5-bromo-2-methyl-2-
cis-pentene in 4 steps starting from 3-formyl-5,6-dihydro-2
H-pyran, dimer of acrolein, followed by alkylation of 2-ethoxycarbonyl-3-methylbicyclo[2.2.1]hept-2-ene with the bromide furnished a facile synthesis of (±)-β-santalol.
View full abstract
-
Maki Kawai, Tomoji Kawai, Kenzi Tamaru
1981 Volume 10 Issue 8 Pages
1185-1188
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
H
2, CH
4 and CO are produced by the thermal reaction (300°C) of cellulose and water vapor using Pt, Pt–TiO
2 and Ru/SiO
2 as catalysts, among which the Ru/SiO
2 catalyst showed the highest activity for direct production of CH
4, and H
2.
View full abstract
-
Takashi Takahashi, Kimihiko Hori, Jiro Tsuji
1981 Volume 10 Issue 8 Pages
1189-1192
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Dihydrojasmone and
cis-jasmone were synthesized in high yields by the Michael addition of lithium di-
n-butylcuprate and bromomagnesium di-1-butenylcuprate, respectively, to 2-methylene-3-methyl-3-methoxymethyloxycyclopentanone. (±)-Jasmololone was also synthesized by the Michael addition of dialkenylcuprate to 2-methylene-3-methyl-3-methoxymethyloxy-4-ethoxyethyloxycyclopentanone.
View full abstract
-
Teruaki Mukaiyama, Masahiro Murakami, Takeshi Oriyama, Masahiko Yamagu ...
1981 Volume 10 Issue 8 Pages
1193-1196
Published: August 05, 1981
Released on J-STAGE: March 27, 2006
JOURNAL
FREE ACCESS
Phenyl-substituted vinyloxyboranes are generated by the acylation of boron-stabilized carbanions with methyl benzoate. Vinyloxyboranes thus generated further react with aldehydes to give the corresponding cross-aldols in good yields.
View full abstract
