Oxford University Press (OUP)

Công bố khoa học tiêu biểu

* Dữ liệu chỉ mang tính chất tham khảo

Sắp xếp:  
Ruthenium-catalyzed Oxidative Alkenylation of Arenes via Regioselective C–H Bond Cleavage Directed by a Nitrogen-containing Group
Oxford University Press (OUP) - Tập 40 Số 10 - Trang 1165-1166 - 2011
Yuto Hashimoto, Takumi Ueyama, Tatsuya Fukutani, Koji Hirano, Tetsuya Satoh, Masahiro Miura
Abstract Direct alkenylation of 1-phenylpyrazoles with alkenes such as acrylates accompanied by regioselective C–H bond cleavage proceeds efficiently under ruthenium catalysis in the presence of a copper oxidant. The procedure is also applicable to 2-phenylbenzothiazole and benzanilide.
Fluoranthocyanine: A New Member of the Phthalocyanine Family
Oxford University Press (OUP) - Tập 27 Số 5 - Trang 423-424 - 1998
Nagao Kobayashi, Yuko Yoshikawa, Osamu Ito, H. Bruce Goodbrand, Jim Mayo
Abstract Fluoranthocyanine, a phthalocyanine analog fused by four five-membered rings and four 1,8-naphthalene units, has been synthesized and characterized by electronic absorption, magnetic circular dichroism, and fluorescence spectroscopy.
Isolation and Structure of Magnoloside A, a New Phenylpropanoid Glycoside from Magnolia obovata Thunb.
Oxford University Press (OUP) - Tập 17 Số 1 - Trang 163-166 - 1988
Takashi Hasegawa, Yoshiyasu Fukuyama, Toshihide Yamada, Kazuyuki Nakagawa
Abstract Magnoloside A, a novel phenylpropanoid glycoside has been isolated from the MeOH extract of Magnolia obovata and its structure has been elucidated as 3,4-dihydroxy-β-phenyl-ethyl-O-α-l-rhamnopyranosyl-(1→2)-3-O-caffeoyl-β-d-allopyranoside by means of spectroscopic and chemical evidences.
Mild, Efficient and Selective Nitration of Anilides, Non-Activated and Moderately Activated Aromatic Compounds with Ammonium Molybdate and Nitric Acid as a New Nitrating Agent
Oxford University Press (OUP) - Tập 29 Số 1 - Trang 48-49 - 2000
Sariah Sana, K. C. Rajanna, M. M. Ali, P. K. Saiprakash
Abstract Ammonium molybdate [Mo(VI)] is operationally simple, environmentally safe and inexpensive reagent. Regioselective nitration of anilides, non-activated and moderately activated aromatic compounds could be afforded by employing ammonium molybdate and nitric acid as mild and effective nitrating agent. This procedure works efficiently under refl...... hiện toàn bộ
1H NMR Study of Hydroxy Groups in Mesoporous Molecular Sieve SBA-15
Oxford University Press (OUP) - Tập 30 Số 11 - Trang 1164-1165 - 2001
Lei Shi, Yan Zou, Heyong He
Abstract Three types of hydroxy groups, which are attributed to single, hydrogen-bonded and geminal SiOHs in mesoporous molecular sieve SBA-15 are directly and quantitatively observed by 1H ultrafast MAS NMR spectroscopy.
A New Ternary Compound in Rare Earth-Cobalt-Boron System
Oxford University Press (OUP) - Tập 1 Số 10 - Trang 875-876 - 1972
Koichi Niihara, Seishi Yajima
Abstract A new ternary boride RCo12B6 with a rhombohedral structure was synthesized by arc-melting in R-Co-B system, where R is a rare earth ion. From magnetic measurements, it was found that CeCo12B6 had a Curie temperature at 130°–140°K and exhibited a Curie–Weiss behavior in the paramagnetic region above 140°K.
Selective Electrochemical Response of Dopamine against 3,4-Dihydroxyphenylacetic Acid at Bare Indium–Tin Oxide Electrode
Oxford University Press (OUP) - Tập 34 Số 8 - Trang 1120-1121 - 2005
Guobao Xu, Osamu Niwa, Osamu Niwa
Abstract Electrochemistry of dopamine and 3,4-dihydroxyphenylacetic acid at ITO were investigated. The oxidation of dopamine significantly depended on pH and supporting electrolyte. The peak current increased more than one hundred folds with increasing pH from 2.5 to 10.0 in phosphate buffer. Moreover, selective oxidation of dopamine against 3,4-dihy...... hiện toàn bộ
Integration of Catalyst Activity Pattern (INCAP) Artificial Intelligence Approach in Catalyst Design
Oxford University Press (OUP) - Tập 17 Số 8 - Trang 1269-1272 - 1988
Tadashi Hattori, Shigeharu Kito, Yûichi Murakami
Abstract A novel knowledge representation scheme for the utilization of activity pattern was developed as a part of a prototype expert system for catalyst design. The result given by the system agreed well with published results, indicating the feasibility of the artificial intelligence approach in the design of catalysts.
Factors Affecting the Unusual Reactivity Order in the β-Hydrogen Abstraction of Dialkylzirconocenes
Oxford University Press (OUP) - Tập 21 Số 12 - Trang 2367-2370 - 1992
Ei‐ichi Negishi, Thinh Nguyen, John Paul Maye, Daniele Choueiri, Noriyuki Suzuki, Tamotsu Takahashi
Abstract Competitive β-hydrogen abstraction of “mixed” dialkylzirconocenes and kinetic measurements of decomposition of methyl(alkyl)zirconocenes reveal unexpected relative reactivity of alkyl groups as β-hydrogen donors, such as s-Bu > t-Bu ≥ Et > n-Bu > i-Bu, which correlate well in most cases with the reactivity order of: β-me...... hiện toàn bộ
Zirconacyclopropanes and Zirconacyclopropenes. Their Synthesis, Characterization, and Reactions
Oxford University Press (OUP) - Tập 16 Số 4 - Trang 623-626 - 1987
Tamotsu Takahashi, Douglas R. Swanson, Ei‐ichi Negishi
Abstract Zirconacyclopropenes represented by Cp2Zr(PhCCPh) (PR3) (4), where PR3 is PMe3 or PMePh2, have been prepared by the reaction of Cp2Zr(PR3)2 with PhC≡CPh, isolated as yellowish crystals, and spectroscopically characterized. Zirconacyclopropenes readily react with proton donors, carbonyl compounds, e.g., acetone, and alkynes to induce dimeriza...... hiện toàn bộ
Tổng số: 192   
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 10