Výsledky vyhledávání - "Nobuaki Koga"

Akademický článek

Synthesis and Photophysical Properties of the 2-(3-(2-Alkyl-6,8-diaryl-4-oxo-1,2,3,4-tetrahydroquinazolin-2-yl)propyl)-6,8-diarylquinazolin-4(3H)-ones

Autor: Mmakwena M. Mmonwa, Malose J. Mphahlele, Morad M. El-Hendawy, Ahmed M. El-Nahas, Nobuaki Koga

Publikováno v: Molecules, Vol 19, Iss 7, Pp 9712-9735 (2014)

Iodine-catalyzed condensation of 2-amino-3,5-dibromobenzamide with cyclohexane-1,3-dione derivatives in refluxing toluene afforded the corresponding bisquinazolinones. Suzuki-Miyaura cross-coupling of the latter with arylboronic acids afforded tetraa

Externí odkaz: https://doaj.org/article/b1ccc75b19264adabb72d29eaf4fafda

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Molecules with a TEMPO-based head group as high-performance organic friction modifiers

Autor: Jinchi Hou, Masaki Tsukamoto, Seanghai Hor, Xingyu Chen, Juntao Yang, Hedong Zhang, Nobuaki Koga, Koji Yasuda, Kenji Fukuzawa, Shintaro Itoh, Naoki Azuma

Publikováno v: Friction. 11:316-332

High-performance organic friction modifiers (OFMs) added to lubricating oils are crucial for reducing energy loss and carbon footprint. To establish a new class of OFMs, we measured the friction and wear properties of N-(2,2,6,6-tetramethyl-1-oxyl-4-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::222875db92f75597bd3b92a7aba90e78
https://doi.org/10.1007/s40544-022-0610-0

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Polymerization via Insertion of Ethylene into Al−C bond under Mild Conditions: Mechanistic Studies on the Promotion Exerted by a Catalytic Amount of Cationic Gadolinium Metallocene

Autor: Shojiro Kaita, Olivier Tardif, Yasuo Wakatsuki, Rika Fukushima, Nobuaki Koga

Publikováno v: Chemistry – An Asian Journal. 16:1403-1416

The cationic gadolinium metallocene [(C5 Me5 )2 Gd][B(C6 F5 )4 ], when combined with an excess amount of Al(i Bu)3 , efficiently produces polyethylene at 80 °C under 0.8 MPa pressure of ethylene. After quenching, the resulting polyethylene has ethyl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19e3628f2ef7807d3113b42ffd92bcbf
https://doi.org/10.1002/asia.202100193

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Theoretical Elucidation of the Effect of Counteranions on the Olefin Polymerization Activity of (Pyridylamido)Hf(IV) Catalyst by QM and REMD Studies: MeB(C6F5)3– versus B(C6F5)4–

Autor: Nana Misawa, Nobuaki Koga, Yuichi Suzuki, Soumen Saha, Masataka Nagaoka

Publikováno v: Organometallics. 40:48-62

1-Octene insertion reaction by the cationic active species of (pyridylamido)Hf(IV) catalyst (HfCat+) was investigated, focusing on the effect of the counteranions (CAs), MeB(C6F5)3– and B(C6F5)4– o...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f3315d8d5afc2f4c8f20902f2a80e3a5
https://doi.org/10.1021/acs.organomet.0c00698

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Adsorption Behavior of TEMPO-Based Organic Friction Modifiers during Sliding between Iron Oxide Surfaces: A Molecular Dynamics Study

Autor: Xingyu Chen, Juntao Yang, Koji Yasuda, Nobuaki Koga, Hedong Zhang

Publikováno v: Langmuir : the ACS journal of surfaces and colloids. 38(10)

Organic friction modifiers (OFMs) added to lubricating oils to reduce friction and wear are crucial for reducing energy loss and CO

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1503c44609ee1bb604ba41d929fc8ed
https://pubmed.ncbi.nlm.nih.gov/35235329

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