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研究成果 1985 2019

  • 4353 引用
  • 41 h指数
  • 163 Article
  • 2 Review article
フィルター
Article
Article

Michael Addition of 2,2-Difluoroketene Silyl Acetal. Preparation of 4,4-Difluoroglutamic Acid and 5,5-Difluorolysine.

Kitagawa, O., Hashimoto, A., Kobayashi, Y. & Taguchi, T., 1990 8 10, : : Chem. Lett.. p. 1307-1310

研究成果: Article

12 引用 (Scopus)

NaH-mediated iodoaziridination reaction of N-allylic tosylamides

Kitagawa, O., Suzuki, T. & Taguchi, T., 1997 12 1, : : Tetrahedron Letters. 38, 48, p. 8371-8374 4 p.

研究成果: Article

Derivatives
12 引用 (Scopus)

NaH-mediated Iodoaziridination Reaction of N-Allylic Tosylamides.

Kitagawa, O., Suzuki, T. & Taguchi, T., 1997 11 15, : : Tetrahedron Lett. 38, p. 8371-8374

研究成果: Article

1 引用 (Scopus)

N-C Axially Chiral Compounds with an ortho-Fluoro Substituent and Steric Discrimination between Hydrogen and Fluorine Atoms Based on a Diastereoselective Model Reaction

Iida, A., Matsuoka, M., Hasegawa, H., Vanthuyne, N., Farran, D., Roussel, C. & Kitagawa, O., 2019 3 15, : : Journal of Organic Chemistry. 84, 6, p. 3169-3175 7 p.

研究成果: Article

Fluorine
Hydrogen
Atoms
Bearings (structural)
Allylation
8 引用 (Scopus)
Anilides
Lithium
Structural properties
reactivity
lithium
8 引用 (Scopus)
2 引用 (Scopus)

N−C Axially Chiral Anilines: Electronic Effect on Barrier to Rotation and A Remote Proton Brake

Iwasaki, Y., Morisawa, R., Yokojima, S., Hasegawa, H., Roussel, C., Vanthuyne, N., Caytan, E. & Kitagawa, O., 2018 3 20, : : Chemistry - A European Journal. 24, 17, p. 4453-4458 6 p.

研究成果: Article

Aniline Compounds
Aniline
Brakes
Protons
Design for testability
122 引用 (Scopus)
Anilides
Lewis Acids
Iodine
Lactic Acid
Derivatives
122 引用 (Scopus)
7 引用 (Scopus)

Possible Case of Halogen Bond-Driven Self-Disproportionation of Enantiomers (SDE) via Achiral Chromatography

Terada, S., Hirai, M., Honzawa, A., Kitagawa, O., Kamizela, A., Wzorek, A. & Soloshonok, V. A., 2017 10 17, : : Chemistry - A European Journal. 23, 58, p. 14631-14638 8 p.

研究成果: Article

Halogens
Enantiomers
Chromatography
Chirality
Hydrogen bonds
16 引用 (Scopus)
Cyclopentanes
Cycloaddition
Alkenes
Iodine
Derivatives
24 引用 (Scopus)
Cycloaddition
Alkenes
Derivatives
Cyclopentanes
Iodine
24 引用 (Scopus)
21 引用 (Scopus)
cyclopropane
octanes
dienes
Iodine
cascades
54 引用 (Scopus)

Regiocontrolled Iodoaminocyclization Reaction of an Ambident Nucleophile Mediated by Basic Metallic Reagent

Fujita, M., Kitagawa, O., Suzuki, T. & Taguchi, T., 1997, : : Journal of Organic Chemistry. 62, 21, p. 7330-7335 6 p.

研究成果: Article

Nucleophiles
Cyclization
Carbamates
Urea
Amides
54 引用 (Scopus)

Regiocontrolled Iodoaminocyclization Reaction of an Ambident Nucleophile Mediated by Basic Metallic Reagent.

Fujita, M., Kitagawa, O., Suzuki, T. & Taguchi, T., 1997 10 15, : : J. Org. Chem.. 62, p. 7330-7335

研究成果: Article

30 引用 (Scopus)

Regio-controlled iodoaminocyclization reaction of an ambident nucleophile mediated by LiAl(Ot-Bu)4

Kitagawa, O., Fujita, M., Li, H. & Taguchi, T., 1997 1 27, : : Tetrahedron Letters. 38, 4, p. 615-618 4 p.

研究成果: Article

Nucleophiles
Carbamates
Cyclization
Amides
Iodine
7 引用 (Scopus)

Relationship between rotational barriers and structures in N-C axially chiral 3,4-dihydroquinolin-2-one and 3,4-dihydrobenzoquinolin-2-one

Suzuki, Y., Takahashi, I., Dobashi, Y., Hasegawa, H., Roussel, C. & Kitagawa, O., 2015 1 1, : : Tetrahedron Letters. 56, 1, p. 132-135 4 p.

研究成果: Article

Ground state
Crystal structure
Nuclear magnetic resonance
X rays
3,4-dihydroquinolin-2-one

Reversible Interconversion between Rotational Isomers of 2,4,6-Tri-tert-butylanilides

Tsukagoshi, S., Yusuke, Y., Ohnishi, O. & Kitagawa, O., 2012 10 30, : : Default journal.

研究成果: Article

Rotational isomerism in 2,4,6-tri-tert-butylanilides

Ototake, N., Takahashi, I., Tsukagoshi, S., Maeda, T. & Kitagawa, O., 2013 1 21, : : Tetrahedron. 69, 3, p. 1013-1016 4 p.

研究成果: Article

Anilides
Isomerization
Hydrogen bonds
Heating
2,4,6-tri-tert-butylanilide
40 引用 (Scopus)

Self-disproportionation of enantiomers of non-racemic chiral amine derivatives through achiral chromatography

Nakamura, T., Tateishi, K., Tsukagoshi, S., Hashimoto, S., Watanabe, S., Soloshonok, V. A., Aceña, J. L. & Kitagawa, O., 2012 5 27, : : Tetrahedron. 68, 21, p. 4013-4017 5 p.

研究成果: Article

Enantiomers
Chromatography
Amines
Derivatives
Acetamides
107 引用 (Scopus)

Self-disproportionation of enantiomers via achiral chromatography: A warning and an extra dimension in optical purifications

Soloshonok, V. A., Roussel, C., Kitagawa, O. & Sorochinsky, A. E., 2012 6 7, : : Chemical Society Reviews. 41, 11, p. 4180-4188 9 p.

研究成果: Article

Enantiomers
Chromatography
Purification
Chirality
Bearings (structural)
107 引用 (Scopus)

Self-disproportionation of enantiomers via achiral chromatography: a warning and an extra dimension in optical purifications

Soloshono, V., Roussel, C., Kitagawa, O., Alex, A. & Sorochinsky, E., 2012 6 2, : : Chem. Soc. Rev.. 41, p. 4180-4188

研究成果: Article

1 引用 (Scopus)

Specific reactivity of 2,4,6-tri-tert-butylanilide anions and its application to benzylation reagent

Yamada, T., Tsukagoshi, S. & Kitagawa, O., 2017 1 25, : : Tetrahedron Letters. 58, 4, p. 317-320 4 p.

研究成果: Article

Anilides
Imidoesters
Anions
Alkylation
Ethers
10 引用 (Scopus)
Cyclopentanes
Stereoselectivity
Cycloaddition
Alkenes
Iodine
47 引用 (Scopus)

Stereoselective synthesis of an optically active axially chiral lactam and its reaction with some electrophiles

Fujita, M., Kitagawa, O., Izawa, H., Dobashi, A., Fukaya, H. & Taguchi, T., 1999 3 5, : : Tetrahedron Letters. 40, 10, p. 1949-1952 4 p.

研究成果: Article

Lactams
Chirality
2-pyrrolidone
47 引用 (Scopus)

Stereoselective Synthesis of an Optically Active Axially Chiral Lactam and Its Reaction with Some Electrophiles.

Fujita, M., Kitagawa, O., Izawa, H., Dobashi, A., Fukaya, H. & Taguchi, T., 1999 2 1, : : Tetrahedron Lett.. 40, p. 1949-1952

研究成果: Article

41 引用 (Scopus)

Stereoselective synthesis of diastereomeric atropisomeric lactam with various ring sizes and their structural characterization

Kitagawa, O., Fujita, M., Kohriyama, M., Hasegawa, H. & Taguchi, T., 2000 10 28, : : Tetrahedron Letters. 41, 44, p. 8539-8544 6 p.

研究成果: Article

Lactams
Kinetics
41 引用 (Scopus)
8 引用 (Scopus)
Allylation
Amides
Thermodynamics
Catalysts
Anilides

Structual Analysis of -Turn Mimics Containing a Substituted 6-Aminocaproic Acid Linker.

Kitagawa, O., V, D., Velde, E., Dutta, D., Morton, M., Takusagawa, F. & Aube, J., 1995 10 1, : : J. Am. Chem. Soc.. 117, p. 5169-5178

研究成果: Article

41 引用 (Scopus)

Structural analysis of β-turn mimics containing a substituted 6-aminocaproic acid linker

Kitagawa, O., Kitagawa, O., Dutta, D., Morton, M., Takusagawa, F. & Aube, J., 1995, : : Journal of the American Chemical Society. 117, 19, p. 5169-5178 10 p.

研究成果: Article

Aminocaproic Acid
Structural analysis
Stereochemistry
Stereoisomerism
Acids
Fluorine Compounds
Substitution reactions
n-butyllithium
20 引用 (Scopus)

Studies on Organic Fluorine Compounds. XLVII. Synthesis of Trifluoromethylated Sugars through the Aldol Reaction of 2-Trimethylsilyloxy-4-trifluoromethylfuran

SAWADA, KOSUKE., Kitagawa, O., TAGUCHI, TAKEO., HANZAWA, YUJI., KOBAYASHI, YOSHIRO. & IITAKA, YOICHI., 1985, : : Chemical and Pharmaceutical Bulletin. 33, 10, p. 4216-4222

研究成果: Article

Fluorine Compounds
Sugars
Lewis Acids
X ray analysis
Aldehydes
10 引用 (Scopus)

Studies on rotational barriers of N-C axially chiral compounds: Increase in the rotational barrier by aromatization

Suzumura, N., Kageyama, M., Kamimura, D., Inagaki, T., Dobashi, Y., Hasegawa, H., Fukaya, H. & Kitagawa, O., 2012 8 15, : : Tetrahedron Letters. 53, 33, p. 4332-4336 5 p.

研究成果: Article

Aromatization
Discrete Fourier transforms
Nitrogen
10 引用 (Scopus)

Studies on rotational barriers of N-C axially chiral compounds: increase in the rotational barrier by aromatization

Suzumura, N., Kageyama, M., Kamimura, D., Inagak, T., Dobashi, Y., Hasegawa, H., Fukaya, H. & Kitagawa, O., 2012 8 1, : : Tetrahedron Lett. 53, p. 4332-4336

研究成果: Article

12 引用 (Scopus)

Synthesis and Regioselective Substitution Reaction of 3-Trifluoromethylfuran.

Kawada, K., Kitagawa, O. & Taguchi, T., 1985 9 1, : : Chem. Pharm. Bull.. 33, p. 3670-3674

研究成果: Article

103 引用 (Scopus)

Synthesis of 2,2-difluoroesters by iododifluoroacetate-copper with organic halides

Taguchi, T., Kitagawa, O., Morikawa, T., Nishiwaki, T., Uehara, H., Endo, H. & Kobayashi, Y., 1986, : : Tetrahedron Letters. 27, 50, p. 6103-6106 4 p.

研究成果: Article

Iodides
Copper
103 引用 (Scopus)

Synthesis of 2,2-Difluoroesters by Iododifluoroacetate-Copper with Organic Halides.

Taguchi, T., Kitagawa, O., Morikawa, T., Nishiwaki, T., Uehara, H., Endo, H. & Kobayashi, Y., 1986 11 10, : : Tetrahedron Lett.. 27, p. 6103-6106

研究成果: Article

106 引用 (Scopus)

Synthesis of 3,3-difluoro-2-azetidinones and 2,3-dideoxy-2,2-difluoro-3-amino-sugars through the reformatsky reaction of difluoroacetate with imine

Taguchi, T., Kitagawa, O., Suda, Y., Ohkawa, S., Hashimoto, A., Iitaka, Y. & Kobayashi, Y., 1988, : : Tetrahedron Letters. 29, 41, p. 5291-5294 4 p.

研究成果: Article

Amino Sugars
Imines
Acetals
Derivatives
Esters

Synthesis of 3,3-Difluoro-2-Azetidinones and 2,3-Dideoxy-2,2-difluoro-3-aminosugars through the Reformatsky Reaction of Difluoroacetate with Imine.

Taguchi, T., Kitagawa, O., Suda, Y., Ohkawa, S., Hashimoto, A., Iitaka, Y. & Kobayashi, Y., 1988 10 10, : : Tetrahedron Lett.. 29, p. 5291-5294

研究成果: Article

Synthesis of -Difluorocarboxylic Acid Derivatives through the Claisen Rearrangement of 1,1-Difluoro-1-alkane-3-ols.

Taguchi, T., Morikawa, T., Kitagawa, O., Mishima, T. & Kobayashi, Y., 1985 11 1, : : Chem. Pharm. Bull.. 33, p. 5137-5140

研究成果: Article

52 引用 (Scopus)
Derivatives
Lactams
2-pyrrolidone
aniline