Osamu Kitagawa

2022

Catalytic Enantioselective Synthesis of N-C Axially Chiral N-(2,6-Disubstituted-phenyl)sulfonamides through Chiral Pd-Catalyzed N-Allylation

Fukasawa, S., Toyoda, T., Kasahara, R., Nakamura, C., Kikuchi, Y., Hori, A., James Richards, G. & Kitagawa, O., 2022 11月, In: Molecules. 27, 22, 7819.

研究成果: Article › 査読

Open Access

Intermolecular Halogen Bond Detected in Racemic and Optically Pure N-C Axially Chiral 3-(2-Halophenyl)quinazoline-4-thione Derivatives

Matsui, R., Niijima, E., Imai, T., Kobayashi, H., Hori, A., Sato, A., Nakamura, Y. & Kitagawa, O., 2022 4月 1, In: Molecules. 27, 7, 2369.

研究成果: Article › 査読

Open Access

Rotational Behavior of N-(5-Substituted-pyrimidin-2-yl)anilines: Relayed Electronic Effect in Two N-Ar Bond Rotations

Homma, D., Taketani, S., Shirai, T., Caytan, E., Roussel, C., Elguero, J., Alkorta, I. & Kitagawa, O., 2022 6月 17, In: Journal of Organic Chemistry. 87, 12, p. 8118-8125 8 p.

研究成果: Article › 査読

1 被引用数 (Scopus)

2021

A unique method for highly enantioselective synthesis of N–C axially chiral compounds

Kitagawa, O., 2021 7月 8, In: Chem. 7, 7, p. 1696-1698 3 p.

研究成果: Article › 査読

Open Access

1 被引用数 (Scopus)

Chiral Pd-Catalyzed Enantioselective Syntheses of Various N-C Axially Chiral Compounds and Their Synthetic Applications

Kitagawa, O., 2021 2月 2, In: Accounts of Chemical Research. 54, 3, p. 719-730 12 p.

研究成果: Article › 査読

56 被引用数 (Scopus)

Detection of Isotopic Atropisomerism Based on ortho-H/D Discrimination

Saito, K., Miwa, S., Iida, A., Fujimoto, Y., Caytan, E., Roussel, C. & Kitagawa, O., 2021 10月 1, In: Organic Letters. 23, 19, p. 7492-7496 5 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Studies on rotational stability of 2-aryl-3-(2-fluorophenyl)quinazolin-4-one derivatives

Iida, A., Saito, K., Asada, N., Fujimoto, Y. & Kitagawa, O., 2021, In: Heterocycles. 103, 1

研究成果: Article › 査読

1 被引用数 (Scopus)

Thionation of Optically Pure N-C Axially Chiral Quinazolin-4-one Derivatives with Lawesson's Reagent

Niijima, E., Imai, T., Suzuki, H., Fujimoto, Y. & Kitagawa, O., 2021 1月 1, In: Journal of Organic Chemistry. 86, 1, p. 709-715 7 p.

研究成果: Article › 査読

6 被引用数 (Scopus)

2020

Relayed Proton Brake in N-Pyridyl-2-iso-propylaniline Derivative: Two Brakes with One Proton

Furukawa, G., Shirai, T., Homma, Y., Caytan, E., Vanthuyne, N., Farran, D., Roussel, C. & Kitagawa, O., 2020 4月 3, In: Journal of Organic Chemistry. 85, 7, p. 5109-5113 5 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

2019

Catalytic Enantioselective Synthesis of N-C Axially Chiral Sulfonamides through Chiral Palladium-Catalyzed N-Allylation

Kikuchi, Y., Nakamura, C., Matsuoka, M., Asami, R. & Kitagawa, O., 2019 6月 21, In: Journal of Organic Chemistry. 84, 12, p. 8112-8120 9 p.

研究成果: Article › 査読

19 被引用数 (Scopus)

Chirality-dependent halogen bonds in axially chiral quinazolin-4-one derivatives bearing: Ortho -halophenyl groups

Imai, T., Niijima, E., Terada, S., Wzorek, A., Soloshonok, V. A., Hori, A. & Kitagawa, O., 2019, In: CrystEngComm. 21, 22, p. 3385-3389 5 p.

研究成果: Article › 査読

4 被引用数 (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月 15, In: Journal of Organic Chemistry. 84, 6, p. 3169-3175 7 p.

研究成果: Article › 査読

13 被引用数 (Scopus)

The self-disproportionation of enantiomers (SDE) of α-amino acid derivatives: facets of steric and electronic properties

Hosaka, T., Imai, T., Wzorek, A., Marcinkowska, M., Kolbus, A., Kitagawa, O., Soloshonok, V. A. & Klika, K. D., 2019 2月 7, In: Amino Acids. 51, 2, p. 283-294 12 p.

研究成果: Article › 査読

11 被引用数 (Scopus)

2018

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月 20, In: Chemistry - A European Journal. 24, 17, p. 4453-4458 6 p.

研究成果: Article › 査読

20 被引用数 (Scopus)

α-Alkylation of N-C Axially Chiral Quinazolinone Derivatives Bearing Various ortho -Substituted Phenyl Groups: Relation between Diastereoselectivity and the ortho -Substituent

Matsuoka, M., Iida, A. & Kitagawa, O., 2018 5月 29, In: Synlett. 29, 16, p. 2126-2130 5 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

2017

Diastereoselective α-Alkylation of Metallo Enamines Generated from N-C Axially Chiral Mebroqualone Derivatives

Matsuoka, M., Goto, M., Wzorek, A., Soloshonok, V. A. & Kitagawa, O., 2017 5月 19, In: Organic Letters. 19, 10, p. 2650-2653 4 p.

研究成果: Article › 査読

16 被引用数 (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月 17, In: Chemistry - A European Journal. 23, 58, p. 14631-14638 8 p.

研究成果: Article › 査読

14 被引用数 (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月 25, In: Tetrahedron Letters. 58, 4, p. 317-320 4 p.

研究成果: Article › 査読

1 被引用数 (Scopus)

2016

Catalytic Enantioselective Synthesis of N-C Axially Chiral Mebroqualone and Its Derivatives through Reductive Asymmetric Desymmetrization

Hirai, M., Terada, S., Yoshida, H., Ebine, K., Hirata, T. & Kitagawa, O., 2016 11月 4, In: Organic Letters. 18, 21, p. 5700-5703 4 p.

研究成果: Article › 査読

46 被引用数 (Scopus)

Catalytic Enantioselective Synthesis of N-C Axially Chiral Phenanthridin-6-one Derivatives

Hirata, T., Takahashi, I., Suzuki, Y., Yoshida, H., Hasegawa, H. & Kitagawa, O., 2016 1月 4, In: Journal of Organic Chemistry. 81, 1, p. 318-323 6 p.

研究成果: Article › 査読

39 被引用数 (Scopus)

Chiral additive induced self-disproportionation of enantiomers under MPLC conditions: Preparation of enantiomerically pure samples of 1-(aryl)ethylamines from racemates

Goto, M., Tateishi, K., Ebine, K., Soloshonok, V. A., Roussel, C. & Kitagawa, O., 2016 5月 1, In: Tetrahedron Asymmetry. 27, 7-8, p. 317-321 5 p.

研究成果: Article › 査読

13 被引用数 (Scopus)

Enantioselective synthesis of N–C axially chiral indoles through chiral palladium-catalyzed 5-endo-hydroaminocyclization

Morimoto, Y., Shimizu, S., Mokuya, A., Ototake, N., Saito, A. & Kitagawa, O., 2016, In: Tetrahedron. 72, 34, p. 5221-5229 9 p.

研究成果: Article › 査読

32 被引用数 (Scopus)

2015

A comprehensive examination of the self-disproportionation of enantiomers (SDE) of chiral amides via achiral, laboratory-routine, gravity-driven column chromatography

Suzuki, Y., Han, J., Kitagawa, O., Aceña, J. L., Klika, K. D. & Soloshonok, V. A., 2015, In: RSC Advances. 5, 4, p. 2988-2993 6 p.

研究成果: Article › 査読

49 被引用数 (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月 1, In: Tetrahedron Letters. 56, 1, p. 132-135 4 p.

研究成果: Article › 査読

10 被引用数 (Scopus)

The synthesis of optically active N-C axially chiral tetrahydroquinoline and its response to an acid-accelerated molecular rotor

Suzuki, Y., Kageyama, M., Morisawa, R., Dobashi, Y., Hasegawa, H., Yokojima, S. & Kitagawa, O., 2015 7月 18, In: Chemical Communications. 51, 56, p. 11229-11232 4 p.

研究成果: Article › 査読

17 被引用数 (Scopus)

2013

Chiral initiator-induces self-disproportionation of enantiomers via achiral chromatography: Application to enantiomer separation of racemate

Tateishi, K., Tsukagoshi, S., Nakamura, T., Watanabe, S., Soloshonok, V. A. & Kitagawa, O., 2013 9月 18, In: Tetrahedron Letters. 54, 38, p. 5220-5223 4 p.

研究成果: Article › 査読

20 被引用数 (Scopus)

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

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

研究成果: Article › 査読

1 被引用数 (Scopus)

Unique structural properties of 2,4,6-tri-tert-butylanilide: Isomerization and switching between separable amide rotamers through the reaction of anilide enolates

Tsukagoshi, S., Ototake, N., Ohnishi, Y., Shimizu, M. & Kitagawa, O., 2013 5月 17, In: Chemistry - A European Journal. 19, 21, p. 6845-6850 6 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

2012

Catalytic enantioselective synthesis of atropisomeric 2-aryl-4-quinolinone derivatives with an N-C chiral axis

Takahashi, I., Morita, F., Kusagaya, S., Fukaya, H. & Kitagawa, O., 2012 12月 15, In: Tetrahedron: Asymmetry. 23, p. 1657-1662

研究成果: Article › 査読

36 被引用数 (Scopus)

Catalytic enantioselective synthesis of atropisomeric 2-aryl-4-quinolinone derivatives with an N-C chiral axis

Takahashi, I., Morita, F., Kusagaya, S., Fukaya, H. & Kitagawa, O., 2012 12月 31, In: Tetrahedron Asymmetry. 23, 24, p. 1657-1662 6 p.

研究成果: Article › 査読

36 被引用数 (Scopus)

Catalytic Enantioselective Synthesis of Atropisomeric 4-Quinolinones with an N-C Chiral axis

Takahashi, I., Fumika, F., Morita, M., Izumi, S. & Kitagawa, O., 2012 10月 30, In: Default journal.

研究成果: Article › 査読

Enantiomer Enrichment of Non-racemic Chiral Amine Derivatives through Achiral Chromatography

Tateishi, K., Nakamura, T., Tsukagoshi, S. & Kitagawa, O., 2012 5月 17, In: Default journal.

研究成果: Article › 査読

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

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

研究成果: Article › 査読

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月 27, In: Tetrahedron. 68, 21, p. 4013-4017 5 p.

研究成果: Article › 査読

56 被引用数 (Scopus)

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

Soloshonok, V. A., Roussel, C., Kitagawa, O. & Sorochinskya, A. E., 2012 5月 15, In: Chemical Society Reviews. 41, 11, p. 4180-4188 9 p.

研究成果: Article › 査読

134 被引用数 (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月 2, In: Chem. Soc. Rev.. 41, p. 4180-4188

研究成果: Article › 査読

134 被引用数 (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月 15, In: Tetrahedron Letters. 53, 33, p. 4332-4336 5 p.

研究成果: Article › 査読

17 被引用数 (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月 1, In: Tetrahedron Lett. 53, p. 4332-4336

研究成果: Article › 査読

17 被引用数 (Scopus)

Study on Rotational Barrier of N-C Axially Chiral Compounds: Remarkable Increase in the ROtational Barrier by Aromatization

Suzumura, N., Kageyama, M., Dobashi, Y. & Kitagawa, O., 2012 5月 17, In: Default journal.

研究成果: Article › 査読

2011

Catalytic enantioselective synthesis of novel atropisomeric compounds having an N-C chiral axis and their application to asymmetric reaction

Takahashi, M. & Kitagawa, O., 2011 9月, In: Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry. 69, 9, p. 985-993 9 p.

研究成果: Article › 査読

14 被引用数 (Scopus)

Intramolecular Diels-Alder reaction of N-allyl 2-furoyl amides: Effect of steric strain and amide rotational isomerism

Nakamura, M., Takahashi, I., Yamada, S., Dobashi, Y. & Kitagawa, O., 2011 1月 5, In: Tetrahedron Letters. 52, 1, p. 53-55 3 p.

研究成果: Article › 査読

20 被引用数 (Scopus)

Intramolecular Diels-Alder Reaction of N-Allyl 2-Furoyl Amides: Effect of Steric Strain and Amide Rotational Isomerism

Nakamura, M., Takahashi, I., Yamada, S., Dobashi, Y. & Kitagawa, O., 2011 1月 1, In: Tetrahedron Lett. 52, p. 53-55

研究成果: Article › 査読

20 被引用数 (Scopus)

Notable structural property of 2,4,6-Tri- tert -butylanilide enolates: Interconversion between the rotamers and their reactivity

Ohnishi, Y., Sakai, M., Nakao, S. & Kitagawa, O., 2011 6月 3, In: Organic Letters. 13, 11, p. 2840-2843 4 p.

研究成果: Article › 査読

8 被引用数 (Scopus)

Notable Structural Property of 2,4,6-Tri-tert-butylanilide Enolates: Interconversion between the Rotamers and Their Reactivity

Ohnishi, Y., Sakai, M., Nakao, S. & Kitagawa, O., 2011 5月 20, In: Organic Letters. 13, p. 2840-2843

研究成果: Article › 査読

8 被引用数 (Scopus)

2010

Atropisomeric lactam chemistry: catalytic enantioselective synthesis, application to asymmetric enolate chemistry and synthesis of key intermediates for NET inhibitors

Takahashi, M., Tanabe, H., Nakamura, T., Kuribara, D., Yamazaki, T. & Kitagawa, O., 2010 1月 2, In: Tetrahedron. 66, 1, p. 288-296 9 p.

研究成果: Article › 査読

53 被引用数 (Scopus)

Atropisomeric lactam chemistry: catalytic enantioselective synthesis, application to asymmetric enolate chemistry and synthesis of key intermediates for NET inhibitors

Takahashi, M., Tanabe, H., Nakamura, T., Kuribara, D., Yamazaki, T. & Kitagawa, O., 2010 1月 5, In: Tetrahedron. 66, p. 288-296

研究成果: Article › 査読

53 被引用数 (Scopus)

Catalytic enantioselective synthesis of atropisomeric indoles with an N-C chiral axis

Ototake, N., Morimoto, Y., Mokuya, A., Fukaya, H., Shida, Y. & Kitagawa, O., 2010 6月 18, In: Chemistry - A European Journal. 16, 23, p. 6752-6755 4 p.

研究成果: Article › 査読

99 被引用数 (Scopus)

Catalytic Enantioselective Synthesis of Atropisomeric Indoles with an N-C Chiral Axis.

Ototake, N., Morimoto, Y., Mokuya, A., Fukaya, H., Shida, Y. & Kitagawa, O., 2010 5月 13, In: Chem. Eur. J.. 16, p. 6752-6755

研究成果: Article › 査読

99 被引用数 (Scopus)

2009

Highly selective stereodivergent synthesis of separable amide rotamers, by using Pd chemistry, and their thermodynamic behavior

Ototake, N., Nakamura, M., Dobashi, Y., Fukaya, H. & Kitagawa, O., 2009 5月 11, In: Chemistry - A European Journal. 15, 20, p. 5090-5095 6 p.

研究成果: Article › 査読

16 被引用数 (Scopus)

Highly Selective Stereodivergent Synthesis of Separable Amide Rotamers Using Pd Chemistry and Their Thermodynamic Behaviors.

Ototake, N., Nakamura, M., Dobashi, Y., Fukaya, H. & Kitagawa, O., 2009 5月 1, In: Chem. Eur. J.. 15, p. 5090-5095

研究成果: Article › 査読

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