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Kazuhiro Maruyama, Tetsuo Otsuki, Atsuhiro Osuka, Hitomi Suzuki
1982 Volume 11 Issue 1 Pages
1-4
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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The oxirane ring of epoxynaphthoquinones was reductively opened upon irradiation in the presence of triethylamine and, in addition, a cross adduct was obtained in the reaction with
N,
N-dimethylaniline in benzene. CIDNP signals observed in the reaction with
N,
N-dimethylaniline were interpreted as evidence for hydrogen atom abstraction in benzene and for electron transfer in acetone and acetonitrile.
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Ramón Bacardit, Marcial Moreno-Mañas
1982 Volume 11 Issue 1 Pages
5-6
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Very facile syntheses of racemic massoia lactone and the pheromone of
Vespa oriental is have been achieved starting from dehydroacetic acid.
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Mitsuo Hiramatsu, Tatsuo Fujinami, Shizuyoshi Sakai
1982 Volume 11 Issue 1 Pages
7-8
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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2,5-Dihydroanisole treated with butyllithium reacts with hydrogen acceptors as hydrogen donor more predominantly than carbanion to give the corresponding hydrogenated products in good yields.
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Masao Inagaki, Tadao Shingaki, Toshikazu Nagai
1982 Volume 11 Issue 1 Pages
9-12
Published: January 05, 1982
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The acetophenone-sensitized photolyses of benzoyl azide in
cis-and
trans-1,4-dimethylcyclohexanes gave the N-substituted benzamides stereospecifically. The photolyses in 2,3-dimethylbutane showed the same insertion regioselectivity ratio toward the C–H bonds as that of singlet benzoylnitrene in the direct photolysis. These facts indicate the existence of the singlet nitrene despite the triplet photosensitization and provide a chemical evidence for the establishment of a singlet-triplet equilibrium for benzoylnitrene.
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Tsunao Hase, Tetsuo Iwagawa
1982 Volume 11 Issue 1 Pages
13-14
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Two bitter principles isolated from
Viburnum suspensum have been determined to be a new iridoid glucoside (
1) and its aglucone (
2) by spectroscopic and chemical methods.
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Sinkichi Honda, Kazunori Terada, Yoshinobu Sato, Mitsuo Sekine, Tsujia ...
1982 Volume 11 Issue 1 Pages
15-18
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Oligoribonucleotide synthesis has been done by employing newly constructed fully protected ribonucleotide units,
S,
S-diphenyl 5′-
O-dimethoxytrityl-2′-
O-tetrahydropyranyl-
N-monomethoxytritylnucleoside 3′-phosphorodithioates 7. The units were found to be useful synthetic intermediates for rapid oligoribonucleotide synthesis.
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Kenji Ichimura, Keisaku Kimura, Yusuke Nakahara, Tatsuhiko Yagl, Hiroo ...
1982 Volume 11 Issue 1 Pages
19-22
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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The electrical conductivity of a cytochrome c
3 anhydrous film was measured in the region between 269 and 300 K under high-pressure hydrogen at 1000 kPa. The minimum value of the electrical resistivity of cytochrome c
3 reached to the order of 1×10
−3 Ωcm at 292 K.
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Kenji Hirai, Hiroharu Suzuki, Hiroshi Kashiwagi, Yoshihiko Moro-Oka, T ...
1982 Volume 11 Issue 1 Pages
23-26
Published: January 05, 1982
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γ-Ketoesters are obtained in excellent yields by means of double bond migration of 2,5-dimethoxy-2,5-dihydrofurans mediated by a ruthenium hydride complex, HRuCl(PPh
3)
3(C
6H
5CH
3) or HRuCl(CO)(PPh
3)
3′ and subsequent hydrolysis in acidic media.
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Keiichi Ohno, Hiroatsu Matsuura, Hiromu Murata
1982 Volume 11 Issue 1 Pages
27-30
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Infrared spectra of the ν
1 and ν
5 bands of gaseous silane-
d3 were measured by a Fourier transform spectrometer. The analysis of the ν
1 band gave the ground-state constants for
28SiHD
3: B
0=1.777388±0.000075 cm
−1, (D
J)
0=(1.5895±0.0090)×10
−5 cm
−1, and (D
JK)
0=−(1.136±0.057)×10
−5 cm
−1. The spectroscopic constants for the v
1=1 and the v
5=1 states were also determined.
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Hiroki Kondo, Hiroyuki Yoshinaga, Kanzi Morita, Junzo Sunamoto
1982 Volume 11 Issue 1 Pages
31-34
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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The cyclization of pyridoxal Schiff base of histidine or histamine is prohibited by metal ions such as Cu
2+ and Zn
2+. On the basis of a similar extent of metal inhibition for histidine and histamine, it is concluded that an identical Schiff base complex with the imidazole group coordinating to the metal is responsible for the inertness of both substrates.
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Kiyoshi Kikukawa, Kiyoshi Kono, Fumio Wada, Tsutomu Matsuda
1982 Volume 11 Issue 1 Pages
35-36
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Arenediazonium salts (ArN
2X; Ar=2-Me–C
6H
4, 3-Me–C
6H
4, 4-Me–C
6H
4, 2-Cl–C
6H
4, 4-Cl–C
6H
4, 4-Br–C
6H
4, 4-I–C
6H
4, 3-NO
2–C
6H
4, 4-NO
2–C
6H
4 and C
6H
5; X=BF
4 and PF
6) were effectively transformed to acyl arenes (ArCOR; R=Me, Et and Ph) in good yields (55–90%) by R
4Sn and CO under palladium catalysis.
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Norio Teramae, Takeshi Yamamoto, Masayuki Hiroguchi, Tomoko Matsui, Sh ...
1982 Volume 11 Issue 1 Pages
37-40
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Fourier transform infrared photoacoustic spectroscopy(FTIR-PAS) was applied to the measurement of photochemical changes of presensitized offset printing plates. FTIR-PAS was found to be a useful method for obtaining direct information on structural changes of photosensitive resins on roughened metal surface.
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Ken-ichi Machida, Gin-ya Adachi, Jiro Shiokawa
1982 Volume 11 Issue 1 Pages
41-44
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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New europium(II) haloborates, Eu
2BO
3X (X=Cl and Br), were prepared by solid state reactions of Eu
3(BO
3)
2 and EuCl
2 or EuBr
2′ and were found to be ferromagnets with 4.2<T
C<5 K. The hexagonal-prismlike single crystals, which have been grown from the molten samples containing a large excess of EuX
2 as a flux, crystallize in the hexagonal system (space group: P6
3mc).
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Masaaki Ueki, Toshiyuki Inazu
1982 Volume 11 Issue 1 Pages
45-48
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Dimethylphosphinothioyl(Mpt) mixed anhydrides of N-protected amino acids were found to be isolatably stable and useful for the synthesis of hydroxyamino acid containing peptides without protecting the side-chain hydroxyl functions. They were applied for the solid phase synthesis of an enkephalin analog extended at C-terminal.
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Hideji Itokawa, Yoshiaki Oshida, Akira Ikuta, Yasuo Shida
1982 Volume 11 Issue 1 Pages
49-52
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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There has been little information that the molecular weights of flavonoid glycosides were measured by conventional mass spectrometry. The application of other soft ionizations such as in-beam El, CI and NICI except for the FD was studied, and good spectra were given by the in-beam NICI method.
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Makoto Misono, Takashi Komaya, Hiroshi Sekiguchi, Yukio Yoneda
1982 Volume 11 Issue 1 Pages
53-56
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Oxidation of acrolein, methacrolein, and isobutyric acid by 12-heteropoly acids of Mo and W (H
3PW
xMo
12−xO
40: x = 0,2,6,10,12) was carried out with a pulse method. By the comparison of the pulse and flow experiments, it was concluded that the prime factor controlling the catalytic activity was the oxidizing power of catalyst (or reducibility of catalyst).
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Koichi Narasaka, Tadafumi Uchimaru
1982 Volume 11 Issue 1 Pages
57-58
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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A synthesis of (±)-integerrinecic acid, an acid part of 12-membered bislactonic pyrrolizidine alkaloid, has been achieved stereoselectively starting from 2-methyl-2-cyclopentenone.
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Suketaka Ito, Yumo Tanaka, Akikazu Kakehi
1982 Volume 11 Issue 1 Pages
59-60
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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N-(Phenylsulfonyl)benzohydrazonoyl azide decomposed to give benzonitrile on treatment with triethylamine at room temperature, and cyclized to 5-pnenyl-1-(phenylsulfonyl)aminotetrazole on heating in benzene, along with the formation of benzonitrile and other products.
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Masashi Tashiro, Takehiko Yamato
1982 Volume 11 Issue 1 Pages
61-64
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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The reaction of 8,16-bis(bromomethyl) [2.2]metacyclophanes (
2) with phenyl lithium in ethyl ether afforded the unexpected spiro compounds
3. It was also found that 8,16-unsymmetrically disubstituted [2.2]metacyclophanes
9 such as 8-methyl-16-halomethyl- and 8-methyl-16-methoxy derivatives were easily prepared from
3.
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Teruo Umemoto, Yuriko Kuriu
1982 Volume 11 Issue 1 Pages
65-66
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Perfluoroalkylation of various thiols with perfluoroalkylphenyliodonium trifluoromethanesulfonates (FITS) under mild conditions was described.
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Tohru Sakakibara, Toshiaki Minami, Yoshiharu Ishido, Rokuro Sudoh
1982 Volume 11 Issue 1 Pages
67-70
Published: January 05, 1982
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2-Nitro sugar derivatives bearing an axial nitro group were proved to be thermodynamically more stable than the corresponding 2-epimers, bearing an equatorial nitro group.
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Tamotsu Fujisawa, Toshio Sato, Masashi Takeuchi
1982 Volume 11 Issue 1 Pages
71-74
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Regioselectivity in the reaction of β-vinyl-β-propiolactone with various nucleophiles was found to depend on the hard and soft acid and base (HSAB) principle. A hard base such as methoxide ion attacked the acyl carbon exclusively, while the nucleophilic attack of soft bases such as iodide and dialkyl cuprate preferred the terminal vinyl carbon to the β-carbon.
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Akira Suzuki, Nobuyuki Nishimiya, Shuichiro Ono, Sakae Higano, Kimiyuk ...
1982 Volume 11 Issue 1 Pages
75-78
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Zr
xTi
1−x(Fe
y Mn
1−y)
z alloys, where x and y are 0 to 1 and z is 1 to 2, are found to have practically promising characteristics that their hydrogen equilibrium pressures can be adjusted to 0.1 to 1 MPa at about 400K by varying the three parameters.
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Masahito Ochiai, Kenzo Sumi, Eiichi Fujita
1982 Volume 11 Issue 1 Pages
79-80
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Cyclopropyl ketones
2 were smoothly cleaved with boron trifluoride-acetic acid under mild reaction conditions by the assistance of trimethylsilyl group to give γ,δ-enones in good yields and the reaction was applied to the formal total synthesis of
cis-jasmone.
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Susumu Mizuta, Toshiya Kumagai
1982 Volume 11 Issue 1 Pages
81-82
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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A new thermochemical cycle for hydrogen production is presented. It consists of (i) redox reaction of sulfur dioxide and iodine with magnesium oxide in an aqueous solution, (ii) hydrolysis of magnesium iodide, (iii) thermal decomposition of magnesium sulfate and (iv) thermal dissociation of hydrogen iodide. Key reactions (i) and (ii) were experimentally verified.
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Tetuo Miyakoshi, Shojiro Saito, Ju Kumanotani
1982 Volume 11 Issue 1 Pages
83-84
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Dimerization of alkyl vinyl ketones in the presence of a catalytic amount of sodium nitrite-acetic acid in DMSO gave the corresponding 1,6-diketones in 58–86% yield.
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Akihiko Yamagishi, Ryuichiro Ohnishi, Mitsuyuki Soma
1982 Volume 11 Issue 1 Pages
85-88
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Tris(acetylacetonato)Co(III) was partially resolved on a 2.5×1.5 cm o.d. chromatographic column of Δ-tris(1,10-phenanthroline)Ni(II) montmorillonite at 2°C. The percentage resolution of
Λ-tris(acetylacetonato)Co(III) was attained to be 36% for the first eluted fraction.
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Narayan Ramnath, Vaidhya Jayathertha Rao, Varadaraj Ramesh, Vaidhyanat ...
1982 Volume 11 Issue 1 Pages
89-92
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Singlet oxygen oxidation of dialkyl thioketones yields the corresponding ketones and in some cases sulfoxides in varying amounts. Steric considerations on the reactive zwitterionic/diradical intermediates have been invoked to rationalise the product distribution.
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Katsuyuki Ogura, Mitsuo Yamashita, Michiyo Suzuki, Gen-ichi Tsuchihash ...
1982 Volume 11 Issue 1 Pages
93-94
Published: January 05, 1982
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A new ring expansion of the title compounds catalyzed by an acid was studied. The reaction of 2-methyl-1-[1-methylsulfinyl-1-(methylthio)alkyl]cyclobutanol was regio- and chemoselective to afford 3-methyl-2-(methylthio)cyclopentanone derivative.
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Toshitaka Koga, Namiko Toh, Yasuyoshi Nogami
1982 Volume 11 Issue 1 Pages
95-98
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Stereochemistry of the acetolysis of 4,6β-dibromo-Δ
4-3-ketosteroicl was examined and a new route of simultaneous introduction of two O-functions at C-2 and C-6 on the steroid skeleton has been established. The reaction is interpreted to proceed by characteristic and successive S
N2′ reaction mechanisms, and stereoelectronic effects control the stereochemistry of the reaction. There is no occurrence of S
N1, S
N2, and any rearrangement courses.
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Tohru Sakakibara, Yutaka Ikeda, Toshinari Miura, Rokuro Sudoh
1982 Volume 11 Issue 1 Pages
99-100
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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Stereoselective preparation of γ-butyrolactone derivatives from 5,5-dimethyl-3-nitrocyclohex-2-en-1-ol and active methylene compounds is described.
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Motomu Muraoka, Tatsuo Yamamoto, Tatsuo Takeshima
1982 Volume 11 Issue 1 Pages
101-104
Published: January 05, 1982
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A series of stable monomeric α-cyano-β-imino-thioaldehydes were synthesized from β-imino-nitriles and potassium dithioformate.
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Yoshihisa Watanabe, Yasushi Tsuji, Naoki Suzuki
1982 Volume 11 Issue 1 Pages
105-106
Published: January 05, 1982
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The reductive carbonylation of nitrobenzene to a urethane(ethylphenylcarbamate) is catalyzed by platinum(II)–tin(IV) systems. The catalytic activities are drastically enhanced by addition of a tertiary amine.
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Tadao Sakai, Noriko Ohno
1982 Volume 11 Issue 1 Pages
107-110
Published: January 05, 1982
Released on J-STAGE: March 27, 2006
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A sensitive and selective method for the determination of berberine is described. Though only a little berberine is extracted with bromophenol blue into chloroform at pH 6.7, it is extracted in quantity with the dye when quinine, being a bulky tertiary amine, co-exists in the aqueous solution. The blue associate is used for selective spectrophotometric determination of berberine in multi-component drugs.
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Kazuo Okuyama, Tasuku Murakami, Tsunenori Nozawa, Masahiro Hatano
1982 Volume 11 Issue 1 Pages
111-114
Published: January 05, 1982
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Origins of the Soret optical activity were investigated by CD spectra of the compound described in the title. The chelation of the axial ligand group(s) was demonstrated to be an important factor for the large optical activity observed on the Soret region which was critically dependent on the spin state of the heme iron.
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Seitaro Namba, Takayuki Komatsu, Tatsuaki Yashima
1982 Volume 11 Issue 1 Pages
115-118
Published: January 05, 1982
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The catalytic activity of MoY zeolite for ethylene polymerization and the apparent oxidation number of molybdenum changed with the activation temperature of HY zeolite and the decomposition temperature of Mo(CO)
6/HY. At 573K of the decomposition temperature, the maximum activity was observed when the apparent oxidation number was about 1.
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Hassan A. Elfahham, Kamal U. Sadek, Galal E. H. Elgemeie, Mohamed H. E ...
1982 Volume 11 Issue 1 Pages
119-122
Published: January 05, 1982
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The behavior of several amino and hydroxy azoles toward nitrile imines and hydrazonyl halides is reported.
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Tatsuo Fujinami, Kazuo Wakuda, Noriyuki Takahashi, Shizuyoshi Sakai
1982 Volume 11 Issue 1 Pages
123-126
Published: January 05, 1982
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Methyl esters of 1,1-dithiodicarboxylic acids were formed by the reaction of cyclic ketones with lithium methoxide and carbon disulfide in tetrahydrofuran followed by the treatment with methyl iodide. The reaction proceeds via dithiocarboxylation and carbonyl carbon-carbon bond cleavage through an inverse Dieckmann-type reaction.
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Hideo Suzuki, Seiji Takasaki, Fumio Koga, Akifumi Ueno, Yoshihide Kote ...
1982 Volume 11 Issue 1 Pages
127-130
Published: January 05, 1982
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Techniques to control metal particle size in a supported catalyst, where metal particles may be fixed on a support by forming chemical bonds with oxygen atoms in a support, were investigated. The effect of metal particle size on a reaction selectivity was elucidated in terms of the ratio of numbers of the edge and corner atoms to those of the surface total atoms in the metal crystallites.
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Yasuhiro Iwasawa, Toshiaki Hayasaka, Sadao Ogasawara
1982 Volume 11 Issue 1 Pages
131-134
Published: January 05, 1982
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Carbon monoxide was selectively converted to ethylene and propylene(>80 % of C
1–C
6 hydrocarbons produced) at 433–447 K over SiO
2-supported Rh catalysts prereduced in situ with a CO–H
2O mixture, while another Rh catalyst obtained by the pretreatment in situ with a H
2–H
2O mixture yielded ethanol and acetaldehyde at a higher selectivity by a factor of about 100 at 453 K than a usual Rh(O) catalyst reduced with H
2 alone.
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Hitomi Suzuki, Yoshiki Yoshida, Atsuhiro Osuka
1982 Volume 11 Issue 1 Pages
135-136
Published: January 05, 1982
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Polymethyliodobenzenes react with sodium trifluoroacetate, in tine presence of copper(I) iodide, in hexamethylphosphoric triamide at 150–180°C, giving a mixture of the corresponding polymethylbenzotrifluoride, parent hydrocarbon, and bis(polymethylphenyl) ether.
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Tomoya Kitazume, Nobuo Ishikawa
1982 Volume 11 Issue 1 Pages
137-140
Published: January 05, 1982
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The reactions of perfluoroalkyl iodides with allyl, vinyl or aryl halides with ultrasonically dispersed zinc in the presence of palladium catalyst proceeded smoothly to give the corresponding allyl, vinyl or aryl perfluoroalkylides in a good yield.
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Wataru Sato, Nobuo Ikeda, Hisashi Yamamoto
1982 Volume 11 Issue 1 Pages
141-142
Published: January 05, 1982
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Allylie dichlorides can be prepared regioselectively and in good yields from simple olefins by tert-butyl hypochlorite in the presence of silica gel.
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1982 Volume 11 Issue 1 Pages
143
Published: 1982
Released on J-STAGE: February 09, 2011
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