Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Kesiny Phomkeona"'
Autor:
Vanpaseuth Phouthavong, Takeshi Hagio, Jae-Hyeok Park, Supinya Nijpanich, Teeranun Srihirunthanon, Nutchanan Chantanurak, Kanchanok Duangkhai, Ratana Rujiravanit, Vanseng Chounlamany, Kesiny Phomkeona, Long Kong, Liang Li, Ryoichi Ichino
Publikováno v:
Arabian Journal of Chemistry, Vol 16, Iss 8, Pp 104959- (2023)
This study presents a method that will allow for the sustainable utilization of rice husk ash-SiO2 (RHAS), an agricultural-waste–derived material, as a bulky solid SiO2 source in the zeolite beta (BEA)/Fe3O4 composite (magnetic RHAS-BEA) synthesis
Externí odkaz:
https://doaj.org/article/ffedcbb015444e76b5e37346d1d6d840
Publikováno v:
Journal of Analytical Methods in Chemistry, Vol 2022 (2022)
This work utilized the simplicity of a so-called membraneless vaporization (MBL-VP) unit as a gas separator for the colorimetric determination of ethanol in alcoholic beverages. A beverage sample with a volume of 1 mL was directly injected into a sma
Externí odkaz:
https://doaj.org/article/b2f86400d83b47fca02c53c4c28a179e
Autor:
Diem Phuong Thi Nguyen, Kazutaka Shibatomi, Seiji Iwasa, Soda Chanthamath, Kesiny Phomkeona, Abdel-Moneim Abu-Elfotoh
Publikováno v:
Advanced Synthesis & Catalysis. 354:3435-3439
The intramolecular cyclopropanation of various trans-allylic diazoacetates and alkenyl diaz- oketones has been achieved with excellent enantio- selectivities of up to 98% ee and in quantitative yields by using a water-soluble ruthenium(II)/ hydroxyme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be137534db025df1b7323a0e9725d59b
https://doi.org/10.1002/adsc.201200508
https://doi.org/10.1002/adsc.201200508
Autor:
Kesiny Phomkeona, Kazutaka Shibatomi, Seiji Iwasa, S. Murakami, Hao Wei Chua, A.M. Abu Elfotoh
Publikováno v:
Advanced Materials Research. 626:411-414
A novel macroporous polymer supported ruthenium (II) dimethyl phenyloxazoline (Ru (II)-dm-Pheox) catalyst has been developed by crosslinking polymerizing monomeric Ru (II)-dm-Pheox complex with styrene and 1,4-divinyl benzene (DVB) in the presence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcdbd168c1de4bc85ac767066d858b62
https://doi.org/10.4028/www.scientific.net/amr.626.411
https://doi.org/10.4028/www.scientific.net/amr.626.411
Publikováno v:
Angewandte Chemie International Edition. 49:8439-8443
relatively low to moderate yields have so far been achieved.After an extensive literature survey, we concluded that all ofthe previously reported PSCCs depended on the polymeri-zation of a monomeric chiral ligand or the grafting of a chiralligand ont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32ac59e61471bdb859290c931c5acfd3
https://doi.org/10.1002/anie.201002240
https://doi.org/10.1002/anie.201002240
Autor:
Ahmad Fakhruddin, Abdel-Moneim Abu-Elfotoh, Kesiny Phomkeona, Seiji Iwasa, Kazutaka Shibatomi
Publikováno v:
Letters in Organic Chemistry. 7:475-478
Asymmetric hetero Diels-Alder (HDA) reaction of highly reactive acyl nitroso intermediates are reported. Transient acyl nitroso compounds 2a’ - c’ are formed by Ru(II)- or Ir(I)-catalyzed hydrogen peroxide oxidation of hydroxamic acids 2a - c and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f2f49d285123abd4fabd406e4b63241
https://doi.org/10.2174/157017810791824955
https://doi.org/10.2174/157017810791824955
Autor:
Kazutaka Shibatomi, Kesiny Phomkeona, Yosuke Ishima, Hisao Nishiyama, Seiji Iwasa, Toshihide Takemoto
Publikováno v:
Tetrahedron. 64:1813-1822
A series of chiral 4,5-bis(2-oxazolinyl)-(2,7-di-tert-butyl-9,9-dimethyl)-9H-xanthenes (xabox) and their transition-metal complexes were synthesized. The X-ray analysis of xabox–RhCl3 complex shows a unique facial type structure. Xabox–Bn–Mn(II
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d5ed8c177b3a43cd6571a885ac80cd2
https://doi.org/10.1016/j.tet.2007.11.109
https://doi.org/10.1016/j.tet.2007.11.109
Autor:
Kazutaka Shibatomi, Kesiny Phomkeona, Seiji Iwasa, Abdel-Moneim Abu-Elfotoh, Diem Phuong Thi Nguyen, Soda Chanthamath
Publikováno v:
ChemInform. 44
The easy separation of the cyclopropyl product, the water-soluble catalyst, and the simple reuse of the catalyst at least five times without significant decrease in reactivity are advantages of this method.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd43eb5b310c04ebbe2875bccb79d810
https://doi.org/10.1002/chin.201320114
https://doi.org/10.1002/chin.201320114
Publikováno v:
ChemInform. 43
A novel two-step procedure is developed for the synthesis of cyclopropylmethanol derivatives (IV) with high diastereo- and enantioselectivity.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df286c7e20094ca78f12628dbae43cd9
https://doi.org/10.1002/chin.201247025
https://doi.org/10.1002/chin.201247025
Publikováno v:
Chemical communications (Cambridge, England). 48(62)
The Ru(II)–Pheox complex is an efficient catalyst for the intermolecular cyclopropanation of various terminal olefins with succinimidyl diazoacetate. This catalytic system can perform under mild conditions, and the desired cyclopropane products are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9191ddf933dac0c689ca05e1ca18b7a2
https://pubmed.ncbi.nlm.nih.gov/22751332
https://pubmed.ncbi.nlm.nih.gov/22751332