Search Results - "ASAO, Naoki"

Nanocatalysts Fabricated by a Dealloying Method by Asao, Naoki

“…Two types of nanomaterials with different morphologies are described in this article: nanoporous metals and titanate nanowires. Both materials are fabricated…”
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Atomic origins of the high catalytic activity of nanoporous gold by Fujita, Takeshi, Guan, Pengfei, McKenna, Keith, Lang, Xingyou, Hirata, Akihiko, Zhang, Ling, Tokunaga, Tomoharu, Arai, Shigeo, Yamamoto, Yuta, Tanaka, Nobuo, Ishikawa, Yoshifumi, Asao, Naoki, Yamamoto, Yoshinori, Erlebacher, Jonah, Chen, Mingwei

“…Distinct from inert bulk gold, nanoparticulate gold has been found to possess remarkable catalytic activity towards oxidation reactions. The catalytic…”
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Pd-Catalyzed Synthesis of 9,9′-Bifluorenylidene Derivatives via Dual C–H Activation of Bis-biaryl Alkynes by Zhao, Jian, Asao, Naoki, Yamamoto, Yoshinori, Jin, Tienan

“…We report a novel Pd-catalyzed alkyne-directed dual C–H activation of bis-biaryl alkynes, which produced important and useful products, 9,9′-bifluorenylidene…”
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Pd-Catalyzed Cascade Crossover Annulation of o‑Alkynylarylhalides and Diarylacetylenes Leading to Dibenzo[a,e]pentalenes by Zhao, Jian, Oniwa, Kazuaki, Asao, Naoki, Yamamoto, Yoshinori, Jin, Tienan

“…A novel and selective Pd-catalyzed cascade crossover-annulation of o-alkynylarylhalides and diarylacetylenes for the synthesis of dibenzo[a,e]pentalenes has…”
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Lewis Acid-Catalyzed [4 + 2] Benzannulation between Enynal Units and Enols or Enol Ethers:  Novel Synthetic Tools for Polysubstituted Aromatic Compounds Including Indole and Benzofuran Derivatives by Asao, Naoki, Aikawa, Haruo

“…The reaction of enynals 1, including o-(alkynyl)benzaldehydes, and carbonyl compounds 2, such as aldehydes and ketones, in the presence of a catalytic amount…”
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Remarkable Catalytic Property of Nanoporous Gold on Activation of Diborons for Direct Diboration of Alkynes by Chen, Qiang, Zhao, Jian, Ishikawa, Yoshifumi, Asao, Naoki, Yamamoto, Yoshinori, Jin, Tienan

“…A novel catalytic property of nanoporous gold for activation of bis(pinacolato)diboron has been reported that allows the direct diboration of alkynes to…”
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Bottom-Up Graphene-Nanoribbon Fabrication Reveals Chiral Edges and Enantioselectivity by Han, Patrick, Akagi, Kazuto, Federici Canova, Filippo, Mutoh, Hirotaka, Shiraki, Susumu, Iwaya, Katsuya, Weiss, Paul S, Asao, Naoki, Hitosugi, Taro

“…We produce precise chiral-edge graphene nanoribbons on Cu{111} using self-assembly and surface-directed chemical reactions. We show that, using specific…”
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AuCl-Catalyzed [4+2] Benzannulation between o-Alkynyl(oxo)benzene and Benzyne by Asao, Naoki, Sato, Kenichiro

“…The AuCl-catalyzed benzannulation of o-alkynyl(oxo)benzenes with benzenediazonium 2-carboxylate proceeds under mild conditions and a variety of anthracene…”
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Nanoporous Gold Catalyst for Highly Selective Semihydrogenation of Alkynes: Remarkable Effect of Amine Additives by Yan, Mei, Jin, Tienan, Ishikawa, Yoshifumi, Minato, Taketoshi, Fujita, Takeshi, Chen, Lu-Yang, Bao, Ming, Asao, Naoki, Chen, Ming-Wei, Yamamoto, Yoshinori

“…We report for the first time the highly selective semihydrogenation of alkynes using the unsupported nanoporous gold (AuNPore) as a catalyst and organosilanes…”
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Self-Assembly Strategy for Fabricating Connected Graphene Nanoribbons by Han, Patrick, Akagi, Kazuto, Federici Canova, Filippo, Shimizu, Ryota, Oguchi, Hiroyuki, Shiraki, Susumu, Weiss, Paul S, Asao, Naoki, Hitosugi, Taro

“…We use self-assembly to fabricate and to connect precise graphene nanoribbons end to end. Combining scanning tunneling microscopy, Raman spectroscopy, and…”
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AuBr3- and Cu(OTf)2-Catalyzed Intramolecular [4 + 2] Cycloaddition of Tethered Alkynyl and Alkenyl Enynones and Enynals:  A New Synthetic Method for Functionalized Polycyclic Hydrocarbons by Asao, Naoki, Sato, Kenichiro, Menggenbateer, Yamamoto, Yoshinori

“…Treatment of tethered alkynyl enynones 8, in which a carbon chain is attached to the carbonyl group, with a catalytic amount of AuBr3 in (ClCH2)2 gave the…”
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2-Positional pyrene end-capped oligothiophenes for high performance organic field effect transistors by Oniwa, Kazuaki, Kikuchi, Hiromasa, Shimotani, Hidekazu, Ikeda, Susumu, Asao, Naoki, Yamamoto, Yoshinori, Tanigaki, Katsumi, Jin, Tienan

“…Three new 2-positional pyrene end-capped oligothiophene co-oligomers, BPynT (n = 1, 2, 3), have been synthesized for application in organic field effect…”
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Cu-Catalyzed C–H Amination of Hydrofullerenes Leading to 1,4‑Difunctionalized Fullerenes by Si, Weili, Lu, Shirong, Bao, Ming, Asao, Naoki, Yamamoto, Yoshinori, Jin, Tienan

“…A novel and highly efficient Cu-catalyzed C–H amination of the monofunctionalized hydrofullerenes for the synthesis of 1,4-difunctional fullerenes has been…”
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Nanorheological Mapping of Rubbers by Atomic Force Microscopy by Igarashi, Takaaki, Fujinami, So, Nishi, Toshio, Asao, Naoki, Nakajima, and Ken

“…A novel atomic force microscopy (AFM) method is used for nanometer-scale mapping of the frequency dependence of the storage modulus, loss modulus, and loss…”
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Unsupported Nanoporous Gold Catalyst for Highly Selective Hydrogenation of Quinolines by Yan, Mei, Jin, Tienan, Chen, Qiang, Ho, Hon Eong, Fujita, Takeshi, Chen, Lu-Yang, Bao, Ming, Chen, Ming-Wei, Asao, Naoki, Yamamoto, Yoshinori

“…For the first time, the highly efficient and regioselective hydrogenation of quinoline derivatives to 1,2,3,4-tetrahydroquinolines using unsupported nanoporous…”
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Composition-Dependent Morphology of Bi- and Trimetallic Phosphides: Construction of Amorphous Pd–Cu–Ni–P Nanoparticles as a Selective and Versatile Catalyst by Zhao, Ming, Ji, Yuan, Wang, Mengyue, Zhong, Ning, Kang, Zinan, Asao, Naoki, Jiang, Wen-Jie, Chen, Qiang

“…Amorphous materials have been widely researched in heterogeneous catalysis and for next-generation batteries. However, the well-defined production of…”
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Hierarchical nanoporosity enhanced reversible capacity of bicontinuous nanoporous metal based Li-O2 battery by Guo, Xianwei, Han, Jiuhui, Liu, Pan, Chen, Luyang, Ito, Yoshikazu, Jian, Zelang, Jin, Tienan, Hirata, Akihiko, Li, Fujun, Fujita, Takeshi, Asao, Naoki, Zhou, Haoshen, Chen, Mingwei

“…High-energy-density rechargeable Li-O 2 batteries are one of few candidates that can meet the demands of electric drive vehicles and other high-energy…”
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Selective Aerobic Oxidation of Methanol in the Coexistence of Amines by Nanoporous Gold Catalysts: Highly Efficient Synthesis of Formamides by Tanaka, Shinya, Minato, Taketoshi, Ito, Eisuke, Hara, Masahiko, Kim, Yousoo, Yamamoto, Yoshinori, Asao, Naoki

“…Holey gold: Highly selective aerobic oxidation of methanol over alkylamines was achieved with a reusable nanoporous gold (AuNPore) catalyst that was fabricated…”
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Nanostructured Zr-Pd Metallic Glass Thin Film for Biochemical Applications by Ketov, Sergey V., Shi, Xuetao, Xie, Guoqiang, Kumashiro, Ryotaro, Churyumov, Alexander Yu, Bazlov, Andrey I., Chen, Na, Ishikawa, Yoshifumi, Asao, Naoki, Wu, Hongkai, Louzguine-Luzgin, Dmitri V.

“…Zr-Pd metallic glassy thin films with a hierarchical nano-scale structure, produced by magnetron sputtering of the Zr and Pd powder mixture, demonstrate a…”
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Induction of enantio-selective apoptosis in human leukemia HL-60 cells by (S)-erypoegin K, an isoflavone isolated from Erythrina poeppigiana by Hikita, Kiyomi, Saigusa, Satomi, Takeuchi, Yuto, Matsuyama, Haruka, Nagai, Rina, Kato, Kuniki, Murata, Tomiyasu, Tanaka, Hitoshi, Wagh, Yogesh S., Asao, Naoki, Kaneda, Norio

“…[Display omitted] •Isoflavone, (RS)-erypoegin K, was semi-synthesized as a racemic mixture.•(S)- and (R)-optical isomers were separated by chiral column…”
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