-
Hayao Kobayashi, Akiko Kobayashi, Gunzi Saito, Hiroo Inokuchi
1982 Volume 11 Issue 3 Pages
245-248
Published: March 05, 1982
Released on J-STAGE: March 27, 2006
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The crystals of 2C
10H
12Se
41⁄2+.BF
4−((TMTSF)
2BF
4) belong to the triclinic system. The space group is P\={l} and the lattice constants are: a=7.255(1), b=7.647(1), c=13.218(3) Å, α=82.23(2), β=87.15(2), γ=70.36(1)°, Z=1, V=688.10 Å
3. The nearly planar TMTSF groups stack in diadic columns along a. The intrastack and interstack contacts between Se atoms show the two-dimensional nature of the crystal.
View full abstract
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Chiaki Kuroda, Hiroshi Hirota, Takeyoshi Takahashi
1982 Volume 11 Issue 3 Pages
249-252
Published: March 05, 1982
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Optically active [3
R,6
S,7
S,1(1O)
E,4
Z]- and [3
R,6
R,7
S,1(10)
E,4
Z]-3-methoxymethoxy-13-nor-1(10),4-germacradieno-12,6-lactones, key synthetic intermediates for 3-oxygenated heliangolides, were synthesized from (−)-carvone.
View full abstract
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Shuji tomoda, Yoshito Takeuchi, Yujiro Nomura
1982 Volume 11 Issue 3 Pages
253-256
Published: March 05, 1982
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Treatment of terminal alkynes with phenyl selenocyanate in dichloromethane in the presence of CuX(X=CN or Br) and triethylamine at room temperature gave 1-phenylseleno-1-alkynes in high yields.
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Tsutomu Kumagai, Motomu Ichikawa, Toshio Mukai
1982 Volume 11 Issue 3 Pages
257-260
Published: March 05, 1982
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8-Methylenetricyclo[3.2.2.0
2,4]non-6-ene (
4) gave 8-methylenetetracyclo[4.3.0.0
2,4.0
5,7]nonane (
6) on photolysis, whereas the dicyano-derivative (
5) afforded two different-types of products, 8-dicyanomethylenetricyclo[3.3.1.0
2,4]non-6-ene (
9) and 9,9-dicycano-8-methylenetricyclo[3.2.2.0
2,4]non-6-ene (
10).
View full abstract
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Kazuhide Tani, Kenichi Suwa, Eiji Tanigawa, Toshikatsu Yoshida, Tamon ...
1982 Volume 11 Issue 3 Pages
261-264
Published: March 05, 1982
Released on J-STAGE: March 27, 2006
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Our search for highly active hydrogenation catalysts for carbonyl compounds, starting with neutral Rh(I) hydride complexes, [RhH(PR
3)
n] (R=i-Pr, n=3; R=Cy, n=2), has led to the discovery of cationic Rh(I) complexes with fully alkylated diphosphine ligands, [Rh{(i-Pr)
2P(CH
2)
nP(i-Pr)
2}(NBD)]Cl0
4 (n=3,4). These compounds prove to be versatile and efficient for hydrogenation of a variety of carbonyl compounds, including aldehydes.
View full abstract
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Kazuhide Tani, Kenichi Suwa, Tsuneaki Yamagata, Sei Otsuka
1982 Volume 11 Issue 3 Pages
265-268
Published: March 05, 1982
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Tetraalkyl analogs of DIOP, (−)-EtDIOP, (−)-i-PrDIOP, and (−)-CyDIOP, have been prepared for the first time by the reaction of (+)-2,3-
O-isopropylidene-2, 3-dihydroxy-1,4-difluorobutane and the corresponding lithium dialkylphosphides. These diphosphines form cationic Rh(I) complexes, [Rh{(-)-RDIOP} (NBD)]C10
4 (R=Et, i-Pr, and Cy), which show remarkable reactivity toward dihydrogen
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Sayuri Yamaki, Yutaka Fukuda, Kozo Sone
1982 Volume 11 Issue 3 Pages
269-270
Published: March 05, 1982
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The title complex, [Cu(daco)
2](NO
3)
2, was newly obtained, and found to show a characteristic reversible thermochromism. Its color changes from orange to violet on heating at 90°C, and becomes orange again on cooling. The mechanism of this thermochromism is suggested on the basis of the UV-visible reflectance spectra, and IR and TG-DTA data.
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Shigeru Murata, Teruo Mori, Michinori Oki
1982 Volume 11 Issue 3 Pages
271-274
Published: March 05, 1982
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Rotational barriers in 1-fluoro-9-(1-naphthyl)fluorene and 1-fluoro-(2-methyl-1-naphthyl)fluorene were found to be lower by ca. 0.5 kcal/mol than those of their parent hydrocarbons. The results are attributed to raising of the ground state energy due to introduction of the fluoro group.
View full abstract
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Masatoshi Oue, Akira Ishigaki, Yousuke Matsui, Takumi Maeda, Keiichi K ...
1982 Volume 11 Issue 3 Pages
275-276
Published: March 05, 1982
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New poly- and bis(thiacrown ether)s containing two oxygen atoms and three to four sulfur atoms in the polyether-polysulfide ring have been synthesized, and they were found to bind silver picrate effectively compared with their monocyclic analogs.
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Yasuto Uchio, Shizuko Eguchi, Mitsuru Nakayama, Tsunao Hase
1982 Volume 11 Issue 3 Pages
277-278
Published: March 05, 1982
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Two simple γ-lactonic cembranolides were isolated from the soft coral
Sinularia mayi Lüttschw. and structurally elucidated on the basis of spectral and chemical evidence.
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Seiichiro Ogawa, Tatsushi Toyokuni, Yoshikazu Iwasawa, Yasuo Abe, Tets ...
1982 Volume 11 Issue 3 Pages
279-282
Published: March 05, 1982
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DL-Validoxylamine B was first synthesized by the reaction of
DL-4,7:5,6-
DL-
O-isopropylidene-(1,4,6/5)-4,5,6-trihydroxy-3-hydroxymethyl-2-cyclohexenylamine with
DL-3,4-di-
O-acetyl-1,2-anhydro-5,7-
O-benzylidene-(1,2,4,6/3,5)-6-hydroxymethyl-1,2,3,4,5-cyclohexanepentol, followed by removal of the protecting groups.
View full abstract
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Shoko Nishihara, Tokuko Watanabe, Yoji Arata
1982 Volume 11 Issue 3 Pages
283-286
Published: March 05, 1982
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A new method, which is based on the use of Mn
2+ ion as an ESR probe, has been developed to examine the number of charged residues on the surface of protein. Results obtained using this method will be briefly discussed for several kinds of proteins.
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Satsuo Kamata, Morihide Higo, Takashi Kamibeppu, Ichiro Tanaka
1982 Volume 11 Issue 3 Pages
287-288
Published: March 05, 1982
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The polyvinyl chloride (PVC) membrane electrode based on the macrocyclic polythiaether, 13,14-benzo-1,4,8,11-tetrathiacycropentadecane (TTX), exhibits the Nernstian behavior to the copper ion. The response time is rapid (< 20 sec) and the detection limit is of the order of 10
−5 M.
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Minoru Suzuki, Etsuro Kurosawa
1982 Volume 11 Issue 3 Pages
289-292
Published: March 05, 1982
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Two new C
15-bromoallenes, deoxyokamurallene and isookamurallene, have been isolated from the title alga, and their structures were determined on the basis of their spectroscopic evidence.
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Tadao Yoshida
1982 Volume 11 Issue 3 Pages
293-294
Published: March 05, 1982
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In the presence of zirconocene dichloride, treatment of alkynes with dialkylchloroalanes followed by iodination gave the corresponding alkenyl iodides in good yields.
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Take-aki Mitsudo, Yukiatsu Komiya, Yoshihisa Watanabe
1982 Volume 11 Issue 3 Pages
295-298
Published: March 05, 1982
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Bis(2,4-pentadionate)cobalt-lithium aluminum hydride system in tetrahydrofuran-tetralin is active for a catalytic hydrogenation of carbon monoxide to lower linear hydrocarbons, the distribution of which has a maximum at less than C
6 with 85% of selectivity for olefins.
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Vaman S. Jorapur, Zarif H. Khalil, Richard P. Duffley, Raj K. Razdan, ...
1982 Volume 11 Issue 3 Pages
299-302
Published: March 05, 1982
Released on J-STAGE: March 27, 2006
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Treatment of cannabinoid diacetate (
2b) with
N-bromosuccinimide gave the brominated product
2c in excellent yield, which with base formed a novel cannabinoid
3b. The structure was confirmed by
13C n.m.r. and
1H n.m.r. nuclear Overhauser enhancement spectral studies.
View full abstract
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Masaharu Ueno, Tomomi Yasui, Isamu Horikoshi
1982 Volume 11 Issue 3 Pages
303-306
Published: March 05, 1982
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Uncoupler-mediated cation transport across liposomal membrane was studied. The pH dependencies of cation leaks were different between counter ions. The mechanism was proposed and ion selectivity was discussed. The correlation between the ionophoric activity of the uncoupler and its uncoupling activity was also shown.
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Shu Tahara, Mitsuyoshi Yoshii, Syotaro Oka
1982 Volume 11 Issue 3 Pages
307-310
Published: March 05, 1982
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By means of the monolithic integrated circuit techniques with the plasma polymerization method, a reference field effect transistor (REFET) has been developed to be used with the ion-selective field effect transistors (ISFET’s). The gate insulator of the REFET is coated with a plasma polymerized styrene film. It was used in combination with the pH-ISFET to determine pH values. Experimental results compared favorably with those from the convetional glass electrode method.
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Jun Saito, Junji Hara, Shozo Toda, Shigeyuki Tanaka
1982 Volume 11 Issue 3 Pages
311-314
Published: March 05, 1982
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The mechanism of thermally initiated polymerization of styrene has been investigated by field desorption mass spectrometry. Most of molecular ion peaks of styrene oligomers have been assigned to a few repetitive units of styrene with additive groups. As a result, it is concluded that the cleavage of styrene dimers to phenylpropenyl and benzyl radicals should contribute to the chain transfer and the reinitiation mechanisms of styrene polymerization.
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Tsutomu Osawa, Tadao Harada
1982 Volume 11 Issue 3 Pages
315-316
Published: March 05, 1982
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The use of a mixture of THF and carboxylic acid as the reaction medium resulted in drastic increase in the optical yield of the hydrogenation of 2-octanone to optically active 2-octanol over tartaric acid-NaBr-modified Raney nickel (TA-NaBr-MRNi). Among the carboxylic acids examined, pivalic acid gave the highest optical yield (65.6%).
View full abstract
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Shohei Inoue, Hideki Murayama, Norikazu Takeda, Yasukazu Ohkatsu
1982 Volume 11 Issue 3 Pages
317-320
Published: March 05, 1982
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N-Methyl-α,β,γ,δ-tetraphenylporphinatozinc ethyl undergoes the homolytic cleavage of the ethyl-zinc group in methylene chloride by the excitation of the porphyrin ring with visible light, resulting in the substitution of a chlorine for the ethyl group.
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Koji Kano, Itsuro Takenoshita, Teiichiro Ogawa
1982 Volume 11 Issue 3 Pages
321-324
Published: March 05, 1982
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The fluorescence of pyrene has been measured in aqueous solutions in the presence of γ-cyclodextrin. The excimer emission of pyrene was enhanced upon addition of γ-cyclodextrin, indicating the formation of the 2:1 complex of pyrene with γ-cyclodextrin which degraded upon addition of
n-butyl alcohol to yield the more stable three-component complex of pyrene,
n-butyl alcohol, and γ-cyclodextrin.
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Tomoshige Kobayashi, Makoto Nitta
1982 Volume 11 Issue 3 Pages
325-328
Published: March 05, 1982
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Phenyl-substituted epoxides rearrange to aldehydes or ketones in the presence of pentacarbonyliron under ultraviolet irradiation. Epoxides which have a phenyl group and an electron-withdrawing substituent at the vicinal positions undergo deoxygenation affording olefins.
View full abstract
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Atsuhiro Osuka, Hirohito Shimizu, Hitomi Suzuki, Kazuhiro Maruyama
1982 Volume 11 Issue 3 Pages
329-332
Published: March 05, 1982
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Type II photoreaction of the title compound gave a cyolobutanol by cyclization, an unsaturated keto alcohol by reverse disproportionation, and a bicyclic diketone by cyclopropylcarbinyl rearrangement. Relative rates of the type II biradical reactions were estimated on the basis of the product analysis.
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Michel Wakselman, Maryse Zrihen
1982 Volume 11 Issue 3 Pages
333-336
Published: March 05, 1982
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At −30°C BBr
3 is a milder reagent than Me
3SiI and Me
3SiCl + NaI for the cleavage of methyl or
tert-butyl esters and benzyl ether group of the title β-lactams without destroying the azetidinone ring.
View full abstract
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Yukio Abe, Tadashi Suehiro
1982 Volume 11 Issue 3 Pages
337-340
Published: March 05, 1982
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On heating tosylates of ethyl 2-alkyl-2-methyl-3-hydroxy-3-phenylpropanoate (R=Me,
1b; R=Et,
6) in
o-dichlorobenzene at 170 °C, ethyl 1-methyl-2-phenyl- and 1,2-dimethyl-3-phenylcyclopropanecarboxylates,
3, and
8, were formed in both 5% yield, respectively, whereas the alkyl migration products, ethyl 3-alkyl-2-methyl-3-phenylpropenoates, were not produced. The mode of the reaction of the methyl group with the cationic carbon was described.
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Yuji Hiraki, Akira Tai
1982 Volume 11 Issue 3 Pages
341-344
Published: March 05, 1982
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The enantiomer-differentiating acylation (kinetic resolution) of α-substituted benzylamine with (
S)-2-phenylbutyric acid anhydride was carried out in organic and aqueous media. (
R)-Amines reacted in excess in organic media, while (
S)-amines reacted in large excess in aqueous media. These differences in the chiral recognition were interpreted based on the idea that the attractive interaction took place between phenyl and alkyl groups in aqueous media.
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Yasuhisa Takuma, Masaru Miyayama, Hiroaki Yanagida
1982 Volume 11 Issue 3 Pages
345-348
Published: March 05, 1982
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Porous and high-resistive ZnO ceramics were obtained by a stepwise doping method of Al
2O
3 and Li
2O. Lithia increased the resistivity of ZnO doped with Al
2O
3 without a change of porous microstrucrure. The sensitivities of the stepwisely doped specimens to reducing gases at 300°C were improved compared to that of the singly doped specimens.
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Kin-ya Akiba, Yoshio Negishi, Naoki Inamoto
1982 Volume 11 Issue 3 Pages
349-350
Published: March 05, 1982
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Dimethyl 2-(
o-acylbenzoyl)-1,2-dihydroisoquinoline-1-phosphonates (
3) were prepared from isoquinoline,
o-acylbenzoyl chloride, and trimethyl phosphite. Intramolecular Wittig-Horner reaction of
3 with LDA afforded good yields of 13-substituted 8
H-dibenzo [
a,
g]quinolizin-8-ones (
4) which bear an isoquinoline alkaloid skeleton.
View full abstract
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Kazuhiko Tanaka, Makoto Terauchi, Aritsune Kaji
1982 Volume 11 Issue 3 Pages
351-352
Published: March 05, 1982
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A general and mild approach to 5-methylene-2(5
H)-furanones has been demonstrated, which involves (a) the alkylation of dianion of 2-(methylthio)-4-pentenoic acid, (b) the cyclization followed by dehydrosulfenylation, and (c) the facile dehydroiodination by Na
2CO
3.
View full abstract
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Teruaki Mukaiyama, Rodney. W. Stevens, Nobuharu Iwasawa
1982 Volume 11 Issue 3 Pages
353-356
Published: March 05, 1982
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Divalent tin enolates formed from stannous triflate and ketones react with carbonyl compounds under mild conditions to give the corresponding aldol products in good yields. In the case of cross-coupling with aldehydes, good to excellent erythro-selectivity was observed.
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Takeo Hosogai, Yoshiji Fujita, Yoichi Ninagawa, Takashi Nishida
1982 Volume 11 Issue 3 Pages
357-360
Published: March 05, 1982
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Selective thermal rearrangement of allylic alcohols proceeds in the presence of various O=W(OR)
4. Ligand catalysts which are more stable than O=W(OR)
4 catalyst and are several times more active than O=V(OR)
3 catalyst.
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Pangbu Hong, Takaya Mise, Hiroshi Yamazaki
1982 Volume 11 Issue 3 Pages
361-364
Published: March 05, 1982
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The rhodium carbonyl-catalyzed reactions of acrylic acid derivatives (
1) with CO in
iso-propanol gave selectively γ-ketopimelic acid derivatives (
2) in good yields. In the reaction of ethyl acrylate (
1b)
in iso-propanol-d
8, deuterium scrambling in the methylene groups of the product (
2b) was observed.
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Fumio Yoneda, Ryosuke Koga, Masatsugu Higuchi
1982 Volume 11 Issue 3 Pages
365-368
Published: March 05, 1982
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Treatment of phenylazomalonamidamidine (I) with aryl aldehydes yielded the corresponding 2,8-diarylhypoxanthines (II) in a single step. The reaction under milder conditions formed the intermediary monoarylidene derivatives (III) of I, from which the corresponding 6-amino-2-aryl-5-phenylazopyrimidine-4(3
H)-ones (IV) were obtained by the oxidative cyclization with diethyl azodicarboxylate. Treatment of IV with second aryl aldehydes gave the unsymmetrical 2,8-diarylated hypoxanthines.
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Takashi Nakatsuka, Teruaki Mukaiyama
1982 Volume 11 Issue 3 Pages
369-372
Published: March 05, 1982
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α-Alkoxyketones and α-ketoacetals are prepared in good yields from silyl enol ethers and alkyl hypochlorites catalyzed by tetrakis (triphenylphosphine)palladium(O).
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Oyo Mitsunobu, Masahiko Ebina, Tsuyoshi Ogihara
1982 Volume 11 Issue 3 Pages
373-376
Published: March 05, 1982
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The hydrophilic part of 14-membered-ring macrolide, colletodiol, containing three chiral centers has been prepared from
L-rhamnose and
D-glucose, suitable for further synthesis.
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Setsuo Takamuku, Takayuki Kuroda, Hiroshi Sakurai
1982 Volume 11 Issue 3 Pages
377-380
Published: March 05, 1982
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t-3,
t-4-Di (2-naphthyl)-r-1,c-2-dimethoxycarbonylcyclobutane (DDCB), when irradiated in the presence of triethylamine, undergoes cycloreversion via the exciplex and/or the ion-pair. The mode of cycloreversion changes with the solvent polarity, reflecting the electronic structure of the intermediates.
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Shigeru Futamura, Hiroyuki Ohta, Yoshio Kamiya
1982 Volume 11 Issue 3 Pages
381-384
Published: March 05, 1982
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Ru(bpy)
32+ sensitized photooxidation of
cis-stilbenes in acetonitrile gave novel [2+6] cycloadducts. Product distribution changed remarkably depending on sensitizers.
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Kazuyoshi Seguchi, Sanae Hirota
1982 Volume 11 Issue 3 Pages
385-386
Published: March 05, 1982
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Photo-oxidation of aryl ethers in the presence of ferric chloride in aqueous acetonitrile afforded alcohols, aldehydes (or ketones), and
N-alkylacetamides. One electron-transfer mechanism from the ether to Fe(III) was suggested for this photo-oxidation.
View full abstract
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Toshihiko Ikeda, Shinjiro Kobayashi, Hiroshi Taniguchi
1982 Volume 11 Issue 3 Pages
387-390
Published: March 05, 1982
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Ethanolysis of 1-aryl-5,7-di-
t-butyl-2-phenylspiro[2.5]octa-1,4,7-trien-6-one
2 proceeds via a vinyl cation generated by opening of the cyclopropene ring, judging from regiospecific ring opening and kinetics (ρ
+=−3.0, m= 0.53, and rate dependence on pH of the solvent).
View full abstract
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Toshihiko Ikeda, Shinjiro Kobayashi, Hiroshi Taniguchi
1982 Volume 11 Issue 3 Pages
391-394
Published: March 05, 1982
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In aqueous ethanol 1-aryl-5,7-di-
t-butyl-2-(
o-methoxyphenyl)spiro[2.5]octa-1,4,7-trien-6-one
4 changed to 2-aryl-3-(3′,5′-di-
t-butyl-4′-hydroxyphenyl)benzofuran
5 in a more than 90% yield. The selective formation of
5 is ascribed to a neighbouring group participation of the
ortho-methoxyl group to an incipient vinyl cation.
View full abstract
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Houchang Kheradmand, Gérard Jenner, Alain Kiennemann, Antonin D ...
1982 Volume 11 Issue 3 Pages
395-398
Published: March 05, 1982
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The effect of several catalysts and binary catalyst mixtures is examined in the formation of ethyl acetate from methyl acetate in presence of CO–H
2. The most effective catalytic system is a combination of ruthenium-cobalt compounds. The optimum conversion and selectivity to ethyl acetate is achieved with an atomic ratio Co/Ru = 0.4.
View full abstract
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Hideyuki Matsumoto, Miyuki Kasahara, Ikuya Matsubara, Masatoshi Takaha ...
1982 Volume 11 Issue 3 Pages
399-400
Published: March 05, 1982
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Benzylmethylchlorosilanes were prepared in high yields by the dechlorinative silylation of benzylic chlorides with methylchlorodisilanes Me
nSi
2Cl
6−n (n = 2,3, and 4) in the presence of a catalytic amount of Pd(PPh
3)
4.
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Takaya Mise, Pangbu Hong, Hiroshi Yamazaki
1982 Volume 11 Issue 3 Pages
401-404
Published: March 05, 1982
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The cross-hydrocarbonylation of acetylenes and ethylene with CO and H
2 in the presence of Rh
4(CO)
12 gave α,β-unsaturated ethyl ketones regio- and stereoselectively.
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Abdulaziz Al Jazzaa, James H. Clark, Malcolm Robertson
1982 Volume 11 Issue 3 Pages
405-408
Published: March 05, 1982
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Infrared spectroscopic studies of silica gel supported permanganate reveal the presence of a discrete physisorbed salt monolayer which is thought to be responsible for the observed enhancement in permanganate reactivity.
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Naoyasu Oishi, Yuzo Nishida, Sigeo Kida
1982 Volume 11 Issue 3 Pages
409-410
Published: March 05, 1982
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Some alkoxo-bridged binuclear manganese(III) complexes showed high catalytic activity for the decomposition of hydrogenperoxide compared with mononuclear manganese(III) complexes.
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Ryusei Konaka, Shigeru Sakata
1982 Volume 11 Issue 3 Pages
411-414
Published: March 05, 1982
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The preparation of sodium 2,4-dimethyl-3-nitrosobenzenesulfonate and its perdeuterio-analogue and their use in spin trapping in aqueous solutions are described.
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Yuzo Imizu, Masahiro Kadoya, Hiromichi Abe, Hidenobu Itoh, Akio Tada
1982 Volume 11 Issue 3 Pages
415-416
Published: March 05, 1982
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Hydroxyapatite calcined in air did not show any catalytic activity for the isomerization of 1-butene even at 573 K, but hydroxyapatite evacuated above 773 K catalyzed the isomerization at 273 K selectively to form
cis-2-butene by an intramolecular hydrogen rearrangement.
View full abstract
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Toshiyuki Katagi, Takeshi Yamamura, Taro Saito, Yukiyoshi Sasaki
1982 Volume 11 Issue 3 Pages
417-420
Published: March 05, 1982
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Synthetic magnesium porphyrins, Mg-P
3+ and Mg-P were solubilized into DPPC vesicles and the trans-membrane electron transport from EDTA·2Na to MV
2+ was studied in the concentration range where the porphyrins did not aggregate. Mg-P
3+ was found to photo-catalyze the reaction about 30 times as efficiently as Mg-P.
View full abstract
