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Your search keyword '"Cheoljae Kim"' showing total 4 results
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4 results on '"Cheoljae Kim"'

2. ChemInform Abstract: Entry to β-Alkoxyacrylates via Gold-Catalyzed Intermolecular Coupling of Alkynoates and Allylic Ethers

Author

Young Ho Rhee, Dong-gil Kim, Cheoljae Kim, N. Thrimurtulu, Jungho Jun, Sae Rom Park, Seunghoon Shin, and Hyun-Suk Yeom

Subjects
Coupling (electronics), Allylic rearrangement, Computational chemistry, Chemistry, organic chemicals, Intermolecular force, food and beverages, General Medicine, Catalysis
Abstract

The first gold-catalyzed intermolecular coupling of alkynoates and allylic ethers is presented.

Published
2013

3. ChemInform Abstract: Gold(I)-Catalyzed Cycloisomerization of the Mixed N,S-Acetals Generated from Homopropargylic Amines; Mechanistic Implication for the Formal Alkyne Prins Reaction

Author

Wontaeck Lim, Young Ho Rhee, and Cheoljae Kim

Subjects
chemistry.chemical_classification, chemistry.chemical_compound, Cycloisomerization, chemistry, Thioether, Stereochemistry, Alkyne, General Medicine, Prins reaction, Alkyl, Catalysis
Abstract

Cycloisomerization of N,S- or N,O-acetals [(I) or (III), resp.] leads to piperidinones (II), whereas compound (IV) having an additional alkyl group at the propargylic position yields thioether (V).

Published
2010

4. ChemInform Abstract: Formal Alkyne Aza-Prins Cyclization: Gold(I)-Catalyzed Cycloisomerization of Mixed N,O-Acetals Generated from Homopropargylic Amines to Highly Substituted Piperidines

Author

Hae Jin Kim, Young Ho Rhee, Cheoljae Kim, Wook Jeong, Hyo Jin Bae, Vasu Sampath, and Ji Hyung Lee

Subjects
chemistry.chemical_classification, Cycloisomerization, chemistry, Cationic polymerization, Iminium, Alkyne, General Medicine, Optically active, Prins reaction, Combinatorial chemistry, Catalysis
Abstract

A new gold(I)-catalyzed cycloisomerization to access highly substituted piperidines has been developed. By combining a conceptually new way of generating iminium ions using cationic gold(I) complexes and an efficient cyclization reaction that can minimize a potentially competing aza-Cope rearrangement, the proposed reaction successfully circumvents a long-standing problem in the classical aza-Prins reaction. Synthetic utility of the catalytic reaction was demonstrated by a synthesis of optically active 2-alkyl-piperidin-4-one.

Published
2010

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