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Your search keyword '"Kyoung-Mahn Kim"' showing total 8 results
Start Over Author "Kyoung-Mahn Kim" Topic chemistry.chemical_element
8 results on '"Kyoung-Mahn Kim"'

1. A Convenient Halogenation of α,β-Unsaturated Carbonyl Compounds withOXONE ®and Hydrohalic Acid (HBr, HCl)

Author

Kyoung-Mahn Kim and In-Hwan Park

Subjects
chemistry.chemical_compound, Bromine, chemistry, Organic Chemistry, Chlorine, Halogenation, chemistry.chemical_element, Hydrobromic acid, Hydrochloric acid, Medicinal chemistry, Catalysis
Abstract

Mixtures of OXONE® and hydrobromic acid or hydro-chloric acid afford solutions of bromine or chlorine, respectively. α-Bromo- or a-chloro-α,β-unsaturated carbonyl compounds were prepared by addition of hydrobromic acid or hydrochloric acid to the mixture of α,β-unsaturated carbonyl compounds and OXONE® in CH 2 Cl 2 followed by treatment of Et 3 N in moderate to good yields.

Published
2004

2. Unusual iodine catalyzed lactonization of γ-methyl-γ,δ-pentenoic acids: A facile synthesis of γ,γ-dimethyl-γ-butyrolactones

Author

Eung K. Ryu and Kyoung Mahn Kim

Subjects
chemistry.chemical_compound, chemistry, Organic Chemistry, Drug Discovery, medicine, chemistry.chemical_element, Methylene, Iodine, Biochemistry, Chloride, Medicinal chemistry, Catalysis, medicine.drug
Abstract

γ,γ-Dimethyl-γ-butyrolactones were exclusively obtained from γ-methyl-γ,δ-pentenoic acids with a catalytic amount of iodine in good yields in methylene chloride.

Published
1996

5. A Convenient Halogenation of ?,?-Unsaturated Carbonyl Compounds with OXONE� and Hydrohalic Acid (HBr, HCl)

Author

Kyoung-Mahn Kim and In-Hwan Park

Subjects
chemistry.chemical_compound, Bromine, Chemistry, Chlorine, Halogenation, Organic chemistry, chemistry.chemical_element, Hydrobromic acid, Hydrochloric acid, General Medicine
Abstract

Mixtures of OXONE® and hydrobromic acid or hydro-chloric acid afford solutions of bromine or chlorine, respectively. α-Bromo- or a-chloro-α,β-unsaturated carbonyl compounds were prepared by addition of hydrobromic acid or hydrochloric acid to the mixture of α,β-unsaturated carbonyl compounds and OXONE® in CH 2 Cl 2 followed by treatment of Et 3 N in moderate to good yields.

Published
2005

7. One-pot Synthesis of α,α-Dichloroketones from Alkynes Using the N,N-Dimethylformamide/HCl/Potassium Monoperoxysulfate System

Author

Hyoung Rae Kim, Kye Kwang Kim, Jae Nyoung Kim, Eung K. Ryu, and Kyoung Mahn Kim

Subjects
chemistry.chemical_compound, Monoperoxysulfate, chemistry, One pot reaction, Potassium, One-pot synthesis, N dimethylformamide, Organic chemistry, chemistry.chemical_element, General Chemistry, Potassium peroxymonosulfate, Nuclear chemistry
Abstract

The reaction of alkynes with N,N-dimethylformamide (DMF)/HCl/potassium monoperoxysulfate (Oxone, Aldrich) afforded the corresponding α,α-dichloroketones in good yields.

Published
1992

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