Výsledky vyhledávání - "Kwang-Su Choi"

Akademický článek

6-Chloro-4-(2-phenylethenyl)chroman-2-one

Autor: Kwang-Su Choi, Sung-Gon Kim

Publikováno v: Acta Crystallographica Section E, Vol 66, Iss 12, Pp o3104-o3104 (2010)

The title compound, C17H13ClO2, was obtained from the oxidation of 6-chloro-4-(2-phenylethenyl)chroman-2-ol, which was synthesized by the reaction of of (E)-3-(5-chloro-2-hydroxyphenyl)acrylaldehyde with styrylboronic acid using diethylamine as a cat

Externí odkaz: https://doaj.org/article/38050db2c99244268896b55350c272ba

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Interface Reactions and Diffusion of Si3N4 / Ti and Si3N4 / TiAl Alloys

Autor: Kwang Su Choi, Jong Won Lee, Sun Jin Kim, Ji Eun Lee, Joon Sik Park

Publikováno v: Korean Journal of Materials Research. 27:603-608

Si3N4 is a ceramic material attracting attention in many fields because of its excellent abrasion resistance. In addition, Ti and TiAl alloys are metals used in a variety of high temperature environments, and have attracted much attention because of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea260db6351c8f7af3ae3f4d6df4568e
https://doi.org/10.3740/mrsk.2017.27.11.603

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Asymmetric Organocatalytic Michael Addition-Cyclization Cascade Reaction of Nitroalkanes with o-Hydroxycinnamaldehydes

Autor: Sung-Gon Kim, Kwang‐Su Choi

Publikováno v: European Journal of Organic Chemistry. 2012:1119-1122

A catalytic enantioselective Michael addition–cyclization reaction of nitroalkanes with o-hydroxycinnamaldehydes has been established by using a diphenylprolinol TMS ether as an organocatalyst. The reaction afforded the corresponding 4-substituted

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4a0fac57db97ff100183baf12620dbcd
https://doi.org/10.1002/ejoc.201101794

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Regioselective Control of 1,2- Versus 1,4-Addition in Organocatalytic Reactions of o-Hydroxycinnamaldehydes with Organoboronic Acids

Autor: Kwang‐Su Choi, Sung-Gon Kim

Publikováno v: Synthesis. 2010:3999-4006

The regioselective 1,2-addition and 1,4-addition reactions of o-hydroxycinnamaldehydes with organoboronic acids in the presence of organocatalysts gave 2-substituted 2H-chromenes and 4-substituted chroman-2-ols, respectively. Diethylamine was used as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f8f62599332ad4132f1d4014c0532e14
https://doi.org/10.1055/s-0030-1258268

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Asymmetric organocatalytic reactions of o-hydroxycinnamaldehydes with organoboronic acids: a facile enantioselective access to chromanes and dihydrobenzopyranes

Autor: Sung-Gon Kim, Kwang‐Su Choi

Publikováno v: Tetrahedron Letters. 51:5203-5206

Catalytic asymmetric 1,4-addition reactions of organoboronic acids to o-hydroxycinnamaldehydes, which afford chromanes and dihydrobenzopyranes, have been established using an organocatalyst derived from imidazolidinone. The chromanes have been obtain

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bdc622f1606499a51bdf7ad904c1435e
https://doi.org/10.1016/j.tetlet.2010.07.138

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Applicable Evaluation of the Latest Land-use Data for Developing a Real-time Atmospheric Field Prediction of RAMS

Autor: Man-Sik Hwang, Kwang-Su Choi, Kwang-Su Chun, Jeong-Ah Yu, Hyunsu Hong, Moon-Soon Lee, Hwa-Woon Lee, Gyeong-Mee Won

Publikováno v: Journal of Korean Society for Atmospheric Environment. 24:1-15

Mercury (Hg), which is mainly emitted from coal-fired power plants, remains one of the most toxic compounds to both humans and ecosystems. Hg pollution is not a local or regional issue, but a global issue. Hg compounds emitted from anthropogenic sour

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94615d40a198aabd5dd059eb5b2c88be
https://doi.org/10.5572/kosae.2008.24.1.001

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