In this period, we have developed the selective reduction by borohydride derivatives, the asymmetric aldol reaction and diastereoselective alkylation reaction employing a camphor-based chriral oxazinone auxiliary. Also, We have developed the various reaction using metal-catalyst. Lastly, we have carried out the total synthesis.
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Selective Recognition of Ammonium over Potassium with Tripodal Oxazoline Receptors
Kim S. G., Jung J., Kim K. H., Kim J., Chin J., Kim K. and Ahn K. H.
Chem. Lett. 2000, 170.
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Novel Artificial Receptors for Alkylammonium Ions with Remarkable Selectivity and Affinity
Kim S. G. and Ahn K. H.
Chem. Eur. J. 2000, 6, 3399.
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Suppressed β -Hydride Elimination in Palladium Catalyzed Cascade Cyclization-Coupling Reactions: An Efficient Synthesis of 3-Arylmethylpyrrolidines
Lee C. W., Oh K. S., Kim K. S. and Ahn K. H.
Org. Lett. 2000, 2, 1213.
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Selective Recognition of Ammonium over Potassium with Tripodal Oxazoline Receptors
Kim S. G., Jung J., Kim K. H., Kim J., Chin J., Kim K. and Ahn K. H.
Chem. Lett. 2000, 170.
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Synthesis and Characterization of New Calixarenes from Bisphenol A
Ahn K. H., Kim S. G., U, J. S.
Bull. Kor. Chem.Soc. 2000, 21, 813.
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Synthesis of Unsymmetrical Chiral Triaza-18-crown-6 and Diaza-12-crown-4 with a Pendant Group
Lee C. W., Jung E. J., Lee S. J., Ahn K. H., Kim K. S.
J. Org. Chem. 2000, 65, 7225.
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Synthesis of Chiral Benzosultams: 3-Functionalized 1,2-Benzisothiazoline 1,1-Dioxides
Ahn K. H., Baek H. H., Lee S. J., Cho C. W.
J. Org. Chem. 2000, 65, 7690.
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New Hybrid Ligands with a trans-1,2-Diaminocyclohexane Backbone: Competing Chelation Modes in Palladium-Catalyzed Enantioselective Allylic Alkylation
Kim Y. K., Lee S. J. and Ahn K. H.
J. Org. Chem. 2000, 65, 7807.
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Synthesis of Chiral 1′-Substituted Oxazolinylferrocenes as Chiral Ligands for Pd-Catalyzed Allylic Substitution Reactions
Park J., Quan Z., Lee S., Ahn K. H., Cho C. W.
J. Organomet.Chem. 1999, 584, 140.
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Pharmacological Characterization of LB50016, N-(4-Amino)butyl-3-Phenylpyrrolidine Derivative, as a New 5-HT 1A Receptor Agonist
Lee C. H., Oh J. I., Park H. D., Kim H. J., Park T. K., Kim J. S., Hong C. Y., Lee S.J.
Ahn K. H., Kim Y. Z.
Arch. Pharm. Res. 1999, 22, 157.
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Chiral Biferrocene-based Bis(oxazolines): Ligands for Cu(I)-Catalyzed Asymmetric Cyclopropanations of Ene-Diazoacetates
Kim S. G., Cho C. W. and Ahn K. H.
Tetrahedron 1999, 55, 10079.
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Ru(II)-Catalyzed Asymmetric Cyclopropanation Using Chiral Diphenylphosphino-(oxazolinyl)quinoline Ligands
Park S. W., Son J. H., Kim S.-G. and Ahn K. H.
Tetrahedron :Asymmetry 1999, 10, 1903.
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N -Substituted-3-arylpyrrolidines : Potnet and Selective Ligands at Serotonin 1A Receptor
Ahn K. H., Lee S. J., Lee C.-H., Hong C. Y., Park T. K.
Bioorg. Med. Chem. Lett. 1999, 9, 1379.
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Direct Conversion of Carboxylic Esters into Ketones Using Organoaluminum Complexes
Chung E.-A., Cho C. W., Ahn K. H.
J. Org. Chem. 1998, 63, 7590.
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The Evaluation of Chiral Benzosultams As Auxiliaries in Asymmetric Azidation Reaction
Ahn K. H., Kim S.-K., Ham C.
Tetrahedron Lett. 1998, 39, 6321.
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Ring Opening of Homochiral Bicyclic Oxazolidinones: Synthesis of Allylglycinol Derivatives
Kim S.-G., Ahn K. H.
Synth. Commun. 1998, 28, 1387.
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Syntheis of 1,4-Dideoxy-1,4-imino-D-arabinitol (D-AB1) Through a Divergent Approach
Ahn K. H., Shin Y.-S.
Bull. Kor. Chem. Soc. 1997, 18, 1192.
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Practical Synthesis of Chiral Sultam Auxiliaries: 3-Substituted-1,2-benzisothiazoline 1,1-Dioxides
Ahn K. H., Ham C., Kim S.-K., Cho C.-W.
J. Org. Chem. 1997, 62, 7047.
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Palladium-Catalyzed Asymmetric Allylic Alkylations Using Diphenylphosphino(oxazolinyl)ferrocene Ligands: Effects of Planar Chirality on the Reactivity and Selectivity
Ahn K. H., Cho C.-W., Park J., Lee S.
Bull. Kor. Chem. Soc. 1997, 18, 789.
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Pd-Catalyzed Asymmetric Allylic Alkylations Using Various Diphenylphosphino(oxazolinyl)ferrocene Ligands
Ahn K. H., Cho C.-W., Park J., Lee S.
Tetrahedron: Asymmetry 1997, 8, 1179.
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Synthesis of Chiral Bis(oxazolinyl)biferrocene Ligands and Their Application to Cu(I)-catalyzed Asymmetric Cyclopropanation
Kim S.-G., Cho C.-W., Ahn K. H.
Tetrahedron: Asymmetry 1997, 8, 1023.
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Effects of Sovent and Lithiation Agent on Stereoselectivity in Lithiation of Chiral 1,1′-Bis(oxazolinyl)ferrocenes
Park J., Lee S., Ahn K. H., Cho C.-W.
Tetrahedron Lett. 1996, 37, 6137.
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An Efficient Diastereoselective Synthesis of Chiral Oxazolinylferrecene Compounds.
Ahn K. H., Cho C.-W., Baek H.-H., Park J., Lee S.
J. Org. Chem. 1996, 61 , 4937.
A Synthetic Study on (±)-Podosporin A
Yoo D. J., Choi W., Lee S. J., Ahn K. H.
Bull. Kor. Chem. Soc. 1996, 17, 153.
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Lithiation and Phosphorylation of Chiral 1,1′-Bis(oxazolinyl)ferrocenes
Park J., Lee S., Ahn K. H., Cho C.-W.
Tetrahedron Lett. 1995, 36, 7263.
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Nucleophilic Additions to 5-Hydroxymethyl-2-pyrrolidinone: Synthesis of Chiral 2,5-Disubstituted Pyrrolidines
Ahn K. H., Kwon G. J., Choi W., Lee S. J., Yoo D. J.
Bull. Kor. Chem. Soc. 1994, 15, 825.
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Conjugate Addition of Amides to a,b -Unsaturated Esters by CsF-Si(OEt) 4 System
Ahn K. H., Lee S. J.,
Tetrahedron Lett. 1994, 35, 1875.
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Synthesis of Naproxen via Regioselective Ring Opening of (2S,3S)-epoxy-1-butanol
Ahn K. H., Jin C. S., Kang D, H., Shin Y. S., Kim J. S., Han D. S., Kim D. H.
J. Heterocyclic Chem. 1993, 30, 825.
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Diastereoselective Alkylation Reactions Employing a Camphor-Based Chriral Oxazinone Auxiliary
Ahn K. H., Lim A., Lee S. J.
Tetrahedron: Asymmetry 1993, 4, 2435.
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Synthesis of 1-Oxaquinolizidines via Reductive Cyclization of Hydroxy-Lactams
Ahn K. H., Lee S. J.,
Tetrahedron Lett. 1992, 33, 507.
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Asymmetric Aldol Reactions Employing a Camphor-Derived Chiral Oxazinone Auxiliary
Ahn K. H., Lee S. J., Lim A.
J. Org. Chem. 1992 , 57, 5065.
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Asymmetric Aldol Reactions Employing a Cyclic Sulfamide Chiral Auxiliary
Ahn K. H., Yoo D. J., Kim J. S.
Tetrahedron Lett. 1992, 33, 6661.
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Regioselective Oxirane Ring Opening of trans -2, 3-Epoxy Alcohols with Arylalumim complexes.
Ahn K. H., Kim J. S., Jin C. S., Kang D. H., Shin Y. S., Kim D. H.
Synlett. 1992, 4, 306.
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Synthesis and Stereochemical Assignment of the C1 -C10 Fragment of Nystatin A1
Nicolaou K. C., Ahn K. H.
Tetrahedron Lett. 1989, 30, 1217.
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Zinc-Modified Cycanoborohydride as a Selective Reducing Agent
Kim S., Oh C. H., Ko J. S., Ahn K. H., Kim Y. J.
J. Org. Chem. 1985, 50, 1927.
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Ate Complex from Diisobutylaluminum Hydride and n -Butyllithium as a Powerful and Selective Reducing Agent for the Reduction of Selected Organic Compounds Containing Various Functional Groups
Kim S., Ahn K. H.
J. Org. Chem. 1984, 49, 1717.
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Facile and Chemoselective Reduction of Aldehydes and Ketones with Zinc-Modified Cycanoborohydride
Kim S., Kim Y. J., Oh C. H., Ahn K. H.
Bull. Kor. Chem. Soc. 1984, 5, 202.
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Selective Reduction of Tertiary, Allyl, and Benzyl Halides by Zinc-Modified Cyanoborohydride in Diethyl Ether
Kim S., Kim Y. J., Ahn K. H.
Tetrahedron Lett. 1983, 24, 3369.
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Lithium Diisobutyl- n -butylaluminum Hydride. An Exceptionally Powerful and Selective Reducing Agent in the Reduction of Organic Halides
Kim S., Ahn K. H.,
Bull. Kor. Chem. Soc. 1983, 4, 152.
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Lithium n -Butylborohydride as a Selective Reducing Agent for the Reduction of Enones, Cyclic Ketones, and Selected Carbonyl Compounds
Kim S., Moon Y. C., Ahn K. H.
J. Org. Chem. 1982, 47, 3311.
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Novel Synthetic Reactions Using 1-Fluoro-2,4,6-trinitrobenzene. An Efficient Direct Esterification Method
Kim S., Ahn K. H., Yang S.
Bull. Kor. Chem. Soc. 1982, 3, 70.
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The Stereochemistry of Reduction of Cyclic and Bicyclic Ketones by Lithium Diisobutyl- tert -butylaluminum Hydride
Kim S., Ahn K. H., Chung Y. W.
J. Org. Chem. 1982, 47, 4581.
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