Výsledky vyhledávání - "Ju‐Eun Won"

Efficient Palladium-Catalyzed Amination of Aryl Chlorides Using Dicyclohexylamino[(2,6-dimethyl)morpholino]phenylphosphine as a PN2 Ligand

Autor: Song‐Eun Park, Kwang‐Ju Jung, Ju‐Eun Won, Sang-Gyeong Lee, Seung Beom Kang, Yong-Jin Yoon

Publikováno v: Synthesis. 2009:815-823

The palladium-catalyzed amination of aryl chlorides with various amines is accomplished using dicyclohexylamino[(2,6-dimethyl)morpholino]phenylphosphine as a bulky electron-rich monoaryl phosphine ligand. The optimized reaction conditions required

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::724b170e28b520bc188955499cb5c9ad
https://doi.org/10.1055/s-0028-1083337

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Selective Halogenation of Bithiophenes Using 2-Halopyridazin-3(2H)-ones under Ambient Conditions

Autor: Song‐Eun Park, Sang-Gyeong Lee, Ju‐Eun Won, Yong-Jin Yoon, Ki Hun Park, Seung Beom Kang, Jong Keun Park, Kwang‐Ju Jung

Publikováno v: Synlett. 2009:490-494

2,2'-Bithiophene and halogenated-2,2'-bithiophenes were halogenated with 2-halo-4,5-dichloropyridazin-3(2H)-one in the presence of zinc halide to give selectively the corresponding di-halo-, trihalo-, and tetrahalo-2,2'-bithiophenes involving the sam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::21721bde45df00f683400c46e3d20776
https://doi.org/10.1055/s-0028-1087536

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Lactonization of ω-Hydroxycarboxylic Acids Using (4,5-Dichloro-6-oxo-6H-pyridazin-1-yl)phosphoric Acid Diethyl Ester

Autor: Seung-Beom Kang, Yong-Jin Yoon, Ju‐Eun Won, Kwang‐Ju Jung, Jeum-Jong Kim, Song‐Eun Park, Min Jung Kim, Sang-Gyeong Lee

Publikováno v: Bulletin of the Korean Chemical Society. 29:2247-2251

E-mail address: yjyoon@gnu.ac.kr Received July 30, 2008(4,5-Dichloro-6-oxo-6H-pyridazin-1-yl)phosphoric acid diethyl ester (3) is an efficient coupling agent forlactonization of aliphatic and aromatic ω-hydroxycarboxylic acids. Lactonization of ω-h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e0e985319e9c87e19feac76b7880968
https://doi.org/10.5012/bkcs.2008.29.11.2247

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Effective Amidation of Carboxylic Acids Using (4,5-Dichloro-6-oxo-6H-pyridazin-1-yl)phosphoric Acid Diethyl Ester

Autor: Ju‐Eun Won, Heung-Seop Yim, Yong-Jin Yoon, Min‐Jung Kim, Seung-Beom Kang, Ho‐Kyun Kim, Sang-Gyeong Lee, Jeum-Jong Kim

Publikováno v: Bulletin of the Korean Chemical Society. 29:1025-1032

(4,5-Dichloro-6-oxo-6H-pyridazin-1-yl)phosphoric acid diethyl ester (3a) are efficient and selective coupling agents for the amidation of carboxylic acids. Amidation of aliphatic and aromatic carboxylic acids with aliphatic and aromatic amines using

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::92462371aa322b2b7bd484a60d9a6fcf
https://doi.org/10.5012/bkcs.2008.29.5.1025

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Effective esterification of carboxylic acids using (6-oxo-6H-pyridazin-1-yl)phosphoric acid diethyl ester as novel coupling agents

Autor: Seung-Beom Kang, Yong-Jin Yoon, Jeum-Jong Kim, Hyun‐A Chung, Ju‐Eun Won, Heong-Seup Yim, Ho‐Kyun Kim, Sang-Gyeong Lee, Min‐Jung Kim

Publikováno v: Tetrahedron. 63:12720-12730

(6-Oxo-6H-pyridazin-1-yl)phosphoric acid diethyl esters (3) are efficient and selective coupling agents for equimolar esterification of carboxylic acids and alcohols. Esterification of aliphatic and aromatic carboxylic acids with aliphatic and aromat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1ab54f4e195e43d30214c579b8bba05a
https://doi.org/10.1016/j.tet.2007.10.011

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ChemInform Abstract: TBAF-Assisted Copper-Catalyzed N-Arylation and Benzylation of Benzazoles with Aryl and Benzyl Halides under the Ligand/Base/Solvent-Free Conditions

Autor: Min Jung Kim, Ju‐Eun Won, Yong-Jin Yoon, Song‐Eun Park, Sang-Gyeong Lee, Hyung-Geun Lee, Bo Ram Kim, Kwang‐Ju Jung

Publikováno v: ChemInform. 41

TBAF-assisted N-arylation and benzylation of benzazoles such as 1H-benzimidazole, 1H-indole, and 1H-benzotriazole with aryl and benzyl halides have been demonstrated under the ligand/base/solvent-free conditions. In the presence of CuBr2 and TBAF (n-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::213dfeae15715e8a6b827e2d23eb21ee
https://doi.org/10.1002/chin.201001042

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