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Research Output 1985 2019

  • 4297 Citations
  • 40 h-Index
  • 163 Article
  • 2 Review article
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Article

(Methyl difluoroacetate)copper Reagent. Remarkable Solvent Effect on the 19F-NMR Spectrum, Stability and Reactivity.

Kitagawa, O., Taguchi, T. & Kobayashi, Y., 1989 Mar 10, In : Chem. Lett.. p. 389-392

Research output: Contribution to journalArticle

35 Citations (Scopus)

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.

Research output: Contribution to journalArticle

Column chromatography
Enantiomers
Amides
Gravitation
Chromatography

A Facile -Iodination Reaction of Unsaturated Amides.

Kitagawa, O., Hanano, T., Inoue, T. & Taguchi, T., 1992 Feb 1, In : Tetrahedron Lett.. 33, p. 2167-2170

Research output: Contribution to journalArticle

23 Citations (Scopus)

A facile α-iodination reaction of unsaturated amides

Kitagawa, O., Hanano, T., Hirata, T., Inoue, T. & Taguchi, T., 1992 Mar 3, In : Tetrahedron Letters. 33, 10, p. 1299-1302 4 p.

Research output: Contribution to journalArticle

Amides
gamma-collidine
111 Citations (Scopus)

Aldol reaction of iododifluoroacetate-Zn and 2,2-difluoroketene silyl acetal

Kitagawa, O., Taguchi, T. & Kobayashi, Y., 1988, In : Tetrahedron Letters. 29, 15, p. 1803-1806 4 p.

Research output: Contribution to journalArticle

Acetals
Iodides
Galactose
Aldehydes
3-hydroxybutanal
111 Citations (Scopus)

Aldol Reaction of Iododifluoroacetate-Zn and 2,2-Difluoroketene Silyl Acetal.

Kitagawa, O., Taguchi, T. & Kobayashi, Y., 1988 Apr 10, In : Tetrahedron Lett.. 29, p. 1803-1806

Research output: Contribution to journalArticle

23 Citations (Scopus)

Alkaline metallic reagent-catalyzed hydrocarbocyclization reaction of various active methine compounds having an unactivated 4-alkynyl or allenyl group

Kitagawa, O., Suzuki, T., Fujiwara, H., Fujita, M. & Taguchi, T., 1999 Jun 11, In : Tetrahedron Letters. 40, 24, p. 4585-4588 4 p.

Research output: Contribution to journalArticle

Proton transfer
Derivatives
n-butyllithium
23 Citations (Scopus)

Alkaline Metallic Reagent-catalyzed Hydrocarbocyclization Reaction of Various Active Methine Compounds Having an Unactivated 4-Alkynyl or Allenyl Group.

Kitagawa, O., Suzuki, T., Fujiwara, H., Fujita, M. & Taguchi, T., 1999 Jun 20, In : Tetrahedron Lett.. 40, p. 4585-4588

Research output: Contribution to journalArticle

A Mild and Highly Chemoselective -Iodination of N-Allylic Carboxamides and Lactams.

Kitagawa, O., Kikuchi, N., Hanano, T., Aoki, K., Yamazaki, T., Okada, M. & Taguchi, T., 1995 Aug 1, In : J. Org. Chem.. 60, p. 7161-7165

Research output: Contribution to journalArticle

18 Citations (Scopus)

A mild and highly chemoselective α-iodination of N-allylic carboxamides and lactams

Kitagawa, O., Kikuchi, N., Hanano, T., Aoki, K., Yamazaki, T., Okada, M. & Taguchi, T., 1995, In : The Journal of Organic Chemistry. 60, 22, p. 7161-7165 5 p.

Research output: Contribution to journalArticle

Lactams
Amides
Stereoselectivity
Iodides
Iodine
13 Citations (Scopus)

A mild method for generation of p-methoxybenzyl cation through NIS-mediated activation of p-methoxybenzyl 4-pentenyl ether

Okada, M., Kitagawa, O., Fujita, M. & Taguchi, T., 1996 Jun 10, In : Tetrahedron. 52, 24, p. 8135-8142 8 p.

Research output: Contribution to journalArticle

Ether
Cations
Chemical activation
Ethers
Alcohols
13 Citations (Scopus)

A Mild Method for Generation of p-Methoxybenzyl Cation through NIS-mediated Activation of p-Methoxybenzyl 4-Pentenyl Ether.

Okada, M., Kitagawa, O., Fujita, M. & Taguchi, T., 1996 Jul 10, In : Tetrahedron. 52, p. 8135-8142

Research output: Contribution to journalArticle

71 Citations (Scopus)

An efficient synthesis of optically active axially chiral anilide and its application to iodine-mediated asymmetric Diels-Alder reaction

Kitagawa, O., Izawa, H., Taguchi, T. & Shiro, M., 1997 Jun 23, In : Tetrahedron Letters. 38, 25, p. 4447-4450 4 p.

Research output: Contribution to journalArticle

Anilides
Cyclopentanes
Iodine
Lactic Acid
isoprene
71 Citations (Scopus)

An Efficient Synthesis of Optically Active Axially Chiral Anilide and Its Application to Iodine-mediated Asymmetric Diels-Alder Reaction.

Kitagawa, O., Izawa, H., Taguchi, T. & Shiro, M., 1997 Jun 9, In : Tetrahedron Lett.. 38, p. 4447-4450

Research output: Contribution to journalArticle

Asymetric Synthesis of -Amino Acids through -Iodination of Chiral Unsaturated Carboxamides and Stereoselective Iodolactonization.

Kitagawa, O., Hanano, T., Kikuchi, N. & Taguchi, T., 1993 Mar 1, In : Tetrahedron Lett.. 34, p. 2165-2168

Research output: Contribution to journalArticle

30 Citations (Scopus)

Asymmetric synthesis of atropisomeric compounds with an N-C chiral axis

Takahashi, I., Suzuki, Y. & Kitagawa, O., 2014 Jan 1, In : Organic Preparations and Procedures International. 46, 1, p. 1-23 23 p.

Research output: Contribution to journalArticle

38 Citations (Scopus)

Asymmetric synthesis of α-amino acids through α-iodination of chiral unsaturated carboxamides and stereoselective iodolactonization

Kitagawa, O., Hanano, T., Kikuchi, N. & Taguchi, T., 1993 Mar 26, In : Tetrahedron Letters. 34, 13, p. 2165-2168 4 p.

Research output: Contribution to journalArticle

Iodides
Lactones
Amides
Amino Acids
pyrrolidine

Atom-transfer Reaction of Difluoroiodoacetate.

Kitagawa, O., Miura, A., Kobayashi, Y. & Taguchi, T., 1990 Jun 10, In : Chem. Lett.. p. 1011-1014

Research output: Contribution to journalArticle

44 Citations (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 Jan 2, In : Tetrahedron. 66, 1, p. 288-296 9 p.

Research output: Contribution to journalArticle

Lactams
Anilides
Silica Gel
Lithium
Purification
44 Citations (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 Jan 5, In : Tetrahedron. 66, p. 288-296

Research output: Contribution to journalArticle

9 Citations (Scopus)

Beckmann rearrangement of O-4-pentenyl oxime through N- bromosuccinimide-mediated activating process

Kitagawa, O., Fujita, M., Okada, M. & Taguchi, T., 1997 Jan, In : Chemical and Pharmaceutical Bulletin. 45, 1, p. 32-35 4 p.

Research output: Contribution to journalArticle

Bromosuccinimide
Oximes
Derivatives
9 Citations (Scopus)

Beckmann Rearrangement of O-4-Pentenyl Oxime through N-Bromosuccinimide-mediated Activating Process.

Kitagawa, O., Fujita, M., Okada, M. & Taguchi, T., 1997 Jan 20, In : Chem. Pharm. Bull.. 45, p. 32-35

Research output: Contribution to journalArticle

69 Citations (Scopus)

Carbocyclization reaction of active methine compounds with unactivated alkenyl or alkynyl groups mediated by TiCl4-Et3N

Kitagawa, O., Suzuki, T., Inoue, T., Watanabe, Y. & Taguchi, T., 1998 Dec 11, In : Journal of Organic Chemistry. 63, 25, p. 9470-9475 6 p.

Research output: Contribution to journalArticle

Derivatives
Alkynes
titanium tetrachloride
69 Citations (Scopus)

Carbocyclization Reaction of Active Methine Compounds with Unactivated Alkenyl or Alkynyl Groups mediated by TiCl4-Et3N.

Kitagawa, O., Suzuki, T., Inoue, T., Watanabe, Y. & Taguchi, T., 1998 Nov 6, In : J. Org. Chem.. 63, p. 9470-9475

Research output: Contribution to journalArticle

26 Citations (Scopus)

Carbocyclization reactions of terminally difluorinated alkenyl active methine compounds mediated by SnCl4 and amine

Saito, A., Okada, M., Nakamura, Y., Kitagawa, O., Horikawa, H. & Taguchi, T., 2003 Sep 1, In : Journal of Fluorine Chemistry. 123, 1, p. 75-80 6 p.

Research output: Contribution to journalArticle

Amines
amines
Derivatives
Cyclization
stannic chloride
18 Citations (Scopus)
Allylation
Diamide
Enantioselectivity
Derivatives
Catalysts
42 Citations (Scopus)

Catalytic asymmetric iodocarbocyclization reaction

Inoue, T., Kitagawa, O., Ochiai, O., Shiro, M. & Taguchi, T., 1995 Dec 18, In : Tetrahedron Letters. 36, 51, p. 9333-9336 4 p.

Research output: Contribution to journalArticle

Enantioselectivity
Titanium
Derivatives
Cyclopentanes
X rays
42 Citations (Scopus)

Catalytic Asymmetric Iodocarbocyclization Reaction.

Inoue, T., Kitagawa, O., Ochiai, O., Shiro, M. & Taguchi, T., 1995 Dec 15, In : Tetrahedron Lett.. 36, p. 9333-9336

Research output: Contribution to journalArticle

54 Citations (Scopus)

Catalytic Asymmetric Iodocarbocyclization Reaction of 4-Alkenylmalonates and Its Application to Enantiotopic Group Selective Reaction

Inoue, T., Kitagawa, O., Saito, A. & Taguchi, T., 1997, In : Journal of Organic Chemistry. 62, 21, p. 7384-7389 6 p.

Research output: Contribution to journalArticle

Enantioselectivity
Malonates
Derivatives
54 Citations (Scopus)

Catalytic Asymmetric Iodocarbocyclization Reaction of 4-Alkenylmalonates and Its Application to Enantiotopic Group Selective Reaction.

Inoue, T., Kitagawa, O., Saito, A. & Taguchi, T., 1997 Oct 15, In : J. Org. Chem.. 62, p. 7384-7389

Research output: Contribution to journalArticle

56 Citations (Scopus)

Catalytic asymmetric synthesis of optically active atropisomeric anilides through enantioselective N-allylation with chiral Pd-tol-BINAP catalyst

Kitagawa, O., Kohriyama, M. & Taguchi, T., 2002 Nov 29, In : Journal of Organic Chemistry. 67, 24, p. 8682-8684 3 p.

Research output: Contribution to journalArticle

Anilides
Allylation
Carbonates
Derivatives
Catalysts
56 Citations (Scopus)

Catalytic Asymmetric Synthesis of Optically Active Atropisomeric Anilides through Enantioselective N-Allylation with Chiral Pd-tol-BINAP Catalyst.

Kitagawa, O., Kohriyama, M. & Taguchi, T., 2002 Nov 30, In : J. Org. Chem.. 67, p. 8682-8684

Research output: Contribution to journalArticle

Catalytic Asymmetric Synthesis of Vicinal Diamine Derivatives through Enantioselective N-Allylation using Chiral -Allyl Pd-Catalyst.

Kitagawa, O., Yotsumoto, K., Kohriyama, M., Dobashi, Y. & Taguchi, T., 2004 Oct 1, In : Org. Lett.. 6, p. 3605-3607

Research output: Contribution to journalArticle

28 Citations (Scopus)

Catalytic asymmetric synthesis of vicinal diamine derivatives through enantioselective N-allylation using chiral π-allyl Pd-catalyst

Kitagawa, O., Yotsumoto, K., Kohriyama, M., Dobashi, Y. & Taguchi, T., 2004 Sep 30, In : Organic Letters. 6, 20, p. 3605-3607 3 p.

Research output: Contribution to journalArticle

Allylation
Diamide
Diamines
diamines
Derivatives
22 Citations (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 Dec 15, In : Tetrahedron: Asymmetry. 23, p. 1657-1662

Research output: Contribution to journalArticle

22 Citations (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 Dec 31, In : Tetrahedron Asymmetry. 23, 24, p. 1657-1662 6 p.

Research output: Contribution to journalArticle

4-Quinolones
Amination
aniline
ketones
Derivatives

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

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

Research output: Contribution to journalArticle

40 Citations (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 Jun 18, In : Chemistry - A European Journal. 16, 23, p. 6752-6755 4 p.

Research output: Contribution to journalArticle

Indoles
palladium chloride
1,3-benzodioxole
40 Citations (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 May 13, In : Chem. Eur. J.. 16, p. 6752-6755

Research output: Contribution to journalArticle

26 Citations (Scopus)

Catalytic enantioselective synthesis of key intermediates for NET inhibitors using atropisomeric lactam chemistry

Kitagawa, O., Kurihara, D., Tanabe, H., Shibuya, T. & Taguchi, T., 2008 Jan 14, In : Tetrahedron Letters. 49, 3, p. 471-474 4 p.

Research output: Contribution to journalArticle

Lactams
Enantioselectivity
Alkylation
Hydration
14 Citations (Scopus)

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 Nov 4, In : Organic Letters. 18, 21, p. 5700-5703 4 p.

Research output: Contribution to journalArticle

Quinazolinones
Enantioselectivity
Derivatives
catalysts
Catalysts
15 Citations (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 Jan 4, In : Journal of Organic Chemistry. 81, 1, p. 318-323 6 p.

Research output: Contribution to journalArticle

Bearings (structural)
Amination
Enantioselectivity
Nitrogen
Derivatives

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 Jun 21, In : Journal of Organic Chemistry. 84, 12, p. 8112-8120 9 p.

Research output: Contribution to journalArticle

Allylation
Sulfonamides
Palladium
Ligands
Derivatives
11 Citations (Scopus)
Anilides
Lactams
Derivatives
Indoles
Amination
10 Citations (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 May 1, In : Tetrahedron Asymmetry. 27, 7-8, p. 317-321 5 p.

Research output: Contribution to journalArticle

Ethylamines
Enantiomers
enantiomers
preparation
elution
17 Citations (Scopus)

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 Sep 18, In : Tetrahedron Letters. 54, 38, p. 5220-5223 4 p.

Research output: Contribution to journalArticle

Enantiomers
Chromatography

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 Jan 1, In : CrystEngComm. 21, 22, p. 3385-3389 5 p.

Research output: Contribution to journalArticle

Bearings (structural)
Halogens
Chirality
chirality
halogens
2 Citations (Scopus)
Chemical activation
Ether
Anilides
Oximes
Ethers

Diastereoselective -Iodination Reaction of 4-Alkenylamide Having a -Chiral Center.

Okada, M., Kitagawa, O. & Hanano, T., 1997 May 10, In : Tetrahedron. 53, p. 6825-6834

Research output: Contribution to journalArticle