Y. Tokunaga

发表

Highly Stereoselective Strecker Synthesis Induced by a Slight Modification of Benzhydrylamine from Achiral to Chiral.

Tsuneomi Kawasaki, S. Aiba, Naoya Takamatsu, 2017, Chemistry.

A Five-layer π-Aromatic Structure Formed through Self-assembly of a Porphyrin Trimer and Two Aromatic Guests.

H. Takaya, Y. Tokunaga, M. Ueda, 2020, Chemistry, an Asian journal.

Utilization of a Crown Ether/Amine-Type Rotaxane as a Probe for the Versatile Detection of Anions and Acids by Thin-Layer Chromatography.

Tsuneomi Kawasaki, Y. Tokunaga, Masaki Kimura, 2020, Chemistry, an Asian journal.

Using ruthenium-catalysed propargylic substitutions for the efficient syntheses of rotaxanes

Y. Tokunaga, N. Kawai, Youji Shimomura, 2007 .

The effect of pressure on pseudorotaxane formation by using the slipping method

Y. Tokunaga, Youji Shimomura, Nanae Wakamatsu, 2006 .

Characterization of Local Structures in Flexible Polyurethane Foams by Solid-state NMR and FTIR Spectroscopy

H. Oka, Y. Tokunaga, T. Masuda, 2006 .

Absolute asymmetric Strecker synthesis in a mixed aqueous medium: reliable access to enantioenriched α-aminonitrile.

Tsuneomi Kawasaki, S. Aiba, Y. Tokunaga, 2019, Organic & biomolecular chemistry.

Asymmetric Strecker Reaction Arising from the Molecular Orientation of an Achiral Imine at the Single-Crystal Face: Enantioenriched l- and d-Amino Acids.

Tsuneomi Kawasaki, S. Aiba, Naoya Takamatsu, 2017, Angewandte Chemie.

Replication of α-amino acids via Strecker synthesis with amplification and multiplication of chiral intermediate aminonitriles.

Tsuneomi Kawasaki, S. Aiba, Naoya Takamatsu, 2016, Chemical communications.

Self-Replication of Chiral α-Amino Acids in Strecker-Type Synthesis via Asymmetric Induction and Amplification of Their Own Chiral Intermediate α-Aminonitriles

Tsuneomi Kawasaki, S. Aiba, Yudai Tanaka, 2019, Bulletin of the Chemical Society of Japan.

Spontaneous formation and amplification of an enantioenriched α-amino nitrile: a chiral precursor for Strecker amino acid synthesis.

Tsuneomi Kawasaki, S. Aiba, Naoya Takamatsu, 2015, Chemical communications.

Construction of Polycyclic Ring Systems Fused to Cyclobutane by Cascade Reactions of Formyl α,β-Unsaturated Esters

T. Taniguchi, M. Ihara, Y. Tokunaga, 1995 .

Development of Low Molecular Weight Ligands for Integrin αvβ3.

Y. Fujibayashi, H. Okazawa, Akira Makino, 2022, Chemical & pharmaceutical bulletin.

Preparation of supramolecular assembled films of fullerene C60 on the aqueous solution of water-soluble azocalixarene

T. Hori, Y. Tokunaga, K. Hisada, 2004 .

Synthesis of a Chiral [2]Rotaxane: Induction of a Helical Structure through Double Threading.

Yuta Suzuki, M. Uchiyama, A. Muranaka, 2018, Organic letters.

Base–acid-induced translational isomerism in a branched [4]rotaxane

Tsuneomi Kawasaki, Y. Tokunaga, M. Ueda, 2016 .

Electrochemical properties of 3,5-diphenylaniline units encapsulated within a crown ether. Effects of the macrocycle’s aromatic functionality and ring size

E. Shoji, T. Iwamoto, S. Nakashima, 2011 .

Catalytic properties of lanthanide metals on silica

H. Imamura, Y. Sakata, T. Konishi, 1992 .

Alkoxide-mediated Oxidative Ring Expansion of Benzocyclobutenes. A New Route to 3,4-Dihydroisocoumarines

K. Shishido, K. Hiroya, A. Yamashita, 1990 .

Facile construction of spirobicyclic skeletons by intramolecular aldol reaction: simple formal syntheses of (±)-spirojatamol and (±)-erythrodiene

M. Ihara, Y. Tokunaga, K. Fukumoto, 1997 .

Synthesis of Six-Membered Compounds by Environmentally Friendly Cyclization Using Indirect Electrolysis.

M. Ihara, Y. Tokunaga, K. Fukumoto, 1996, The Journal of organic chemistry.

Quantitative Difference in Solubility of Diastereomeric (2H/1H)-Isotopomers

Tsuneomi Kawasaki, Y. Tokunaga, H. Kubo, 2021, Journal of the American Chemical Society.

BOROXINE CHEMISTRY : FROM FUNDAMENTAL STUDIES TO APPLICATIONS IN SUPRAMOLECULAR AND SYNTHETIC ORGANIC CHEMISTRY

Y. Tokunaga, 2013 .

THE SYNTHESIS OF 1BETA -FLUOROCARBAPENEM DERIVATIVE

M. Ihara, Y. Tokunaga, K. Fukumoto, 1996 .

Total synthesis of (+)-albicanol and (+)-albicanyl acetate via a highly diastereoselective intramolecular [3 + 2] cycloaddition

K. Shishido, K. Hiroya, T. Kametani, 1990 .

Decarboxylative photosubstitution of dicyanobenzenes with aliphatic carboxylate ions

M. Hatanaka, Y. Tokunaga, Y. Yoshimi, 2009 .

A MILD OXIDATIVE TRANSFORMATION OF NITRO COMPOUNDS INTO KETONES BY TETRAPROPYLAMMONIUM PERRUTHENATE

M. Ihara, Y. Tokunaga, K. Fukumoto, 1997 .

Solvation and the Synthesis of Self‐Assembled Capsules

J. Rebek, D. Rudkevich, Y. Tokunaga, 1997 .

Four-State Molecular Shuttling of [2]Rotaxanes in Response to Acid/Base and Alkali-Metal Cation Stimuli.

Tsuneomi Kawasaki, Y. Tokunaga, M. Ueda, 2017, Chemistry, an Asian journal.

A novel synthetic approach to steroids via intramolecular 1,3-dipolar cycloaddition. A highly stereocontrolled synthesis of testosterone

M. Ihara, Y. Tokunaga, K. Fukumoto, 1990 .

Dynamic covalent chemistry of a boronylammonium ion and a crown ether: formation of a C3-symmetric [4]rotaxane

Takashi Ito, Y. Tokunaga, R. Nakata, 2008 .

Formation of [2]- and [3]Rotaxanes through Bridging under Kinetic and Thermodynamic Control.

Tsuneomi Kawasaki, Y. Tokunaga, Masaki Kimura, 2017, Organic letters.

Rotaxanes comprising cyclic phenylenedioxydiacetamides and secondary mono- and bis-dialkylammonium ions: effect of macrocyclic ring size on pseudorotaxane formation

H. Takaya, Tsuneomi Kawasaki, Takanori Nakamura, 2020 .

Rotational isomerism of the amide units in rotaxanes based on a cyclic tetraamide and secondary ammonium ions

H. Takaya, Tsuneomi Kawasaki, Y. Tokunaga, 2019, Organic Chemistry Frontiers.

Synthesis of a Mechanically Planar Chiral and Axially Chiral [2]Rotaxane.

H. Takaya, M. Uchiyama, A. Muranaka, 2021, Organic letters.

Formation of hetero-boroxines: dynamic combinatorial libraries generated through trimerization of pairs of arylboronic acids

Y. Tokunaga, Youji Shimomura, Hiroki Ueno, 2007 .

Formation of boroxine: Its stability and thermodynamic parameters in solution

T. Seo, Y. Tokunaga, Youji Shimomura, 2002 .

Five-state molecular switching of a [3]rotaxane in response to weak and strong acid and base stimuli.

Tsuneomi Kawasaki, Y. Tokunaga, Masaki Kimura, 2013, Chemical communications.

Switchable Rotaxane System in Response to External Stimulus

Y. Tokunaga, 2011 .

A molecular switch based on acid and base promoted, cation governed binding in a crown ether threaded rotaxane

Tatsuya Nakamura, Y. Tokunaga, Youji Shimomura, 2006 .

Locking the dynamic axial chirality of biphenyl crown ethers through threading.

H. Takaya, Tomoya Kimura, Y. Tokunaga, 2020, Chemistry, an Asian journal.

A Chiral [3]Rotaxane Comprising Achiral Bis-macrocyclic and Dumbbell-Shaped Components.

M. Uchiyama, A. Muranaka, N. Kobayashi, 2021, Organic Letters.

A High-Yielding and Convenient Synthesis of Rotaxane Based On an Ester Forming Capping Methodology

T. Seo, K. Isa, Y. Tokunaga, 2002 .

A [2]ROTAXANE CONTAINING N,N-DIALKYLAMMONIUM ION AND N-ALKYLANILINE CENTERS. TRANSLATIONAL ISOMERISM, AND SPECIFIC N-ACYLATIONS

Y. Tokunaga, Yuji Yamauchi, N. Harada, 2010 .

Do Dibenzo[22–30]crown Ethers Bind Secondary Ammonium Ions to Form Pseudorotaxanes?

Tatsuya Nakamura, Y. Tokunaga, Youji Shimomura, 2007 .

Three-state molecular shuttles operated using acid/base stimuli with distinct outputs.

Y. Tokunaga, Nao Matsubara, M. Kawabata, 2011, Organic & biomolecular chemistry.

Ring size affects the kinetic and thermodynamic formation of [2]rotaxanes featuring an unsymmetric bis-crown ether component

Tsuneomi Kawasaki, Y. Tokunaga, Shinobu Miyagawa, 2019, Materials Chemistry Frontiers.

Orientation of the α-CD component of [2]rotaxanes affects their specific molecular recognition behaviour

T. Iwamoto, Y. Tokunaga, Shinobu Miyagawa, 2021, Organic Chemistry Frontiers.

Five-State Molecular Shuttling of a Pair of [2]Rotaxanes: Distinct Outputs in Response to Acid and Base Stimuli.

Tsuneomi Kawasaki, Y. Tokunaga, M. Ueda, 2016, Chemistry, an Asian journal.

Formation of pseudo[3]rotaxanes containing calix-bis-crowns and secondary ammonium ions and their thermodynamic stabilities in a solution: preorganization by second macrocycle and nonallosteric behavior exhibited by large crown cavities

K. Hayakawa, J. Miyashita, Tsuneomi Kawasaki, 2013 .

Recognition Behavior of a Porphyrin Heterodimer Self-Assembled through an Amidinium-Carboxylate Salt Bridge

H. Takaya, Tsuneomi Kawasaki, Y. Tokunaga, 2018, Asian Journal of Organic Chemistry.

EFFICIENT SYNTHESIS OF [2]ROTAXANES BASED ON SEQUENTIAL ACETYLENE-DICOBALT HEXACARBONYL COMPLEXATION AND STOPPER MODIFICATION

T. Hoshi, T. Sugihara, Y. Tokunaga, 2009 .

Efficient Synthesis of Rotaxane Based on Complexation of Acetylene and Dicobalt Hexacarbonyl: Introduction of a Transformable Functional Group

T. Sugihara, Y. Tokunaga, N. Kawai, 2006 .

Multi-state molecular shuttling of a pair of [2]rotaxane in response to weak and strong acid and base stimuli

Tsuneomi Kawasaki, H. Ohsaki, Y. Tokunaga, 2015 .

Preparation and photochemical properties of 〔2〕rotaxanes containing an aniline moiety encapsulated by crown ethers

T. Iwamoto, S. Nakashima, T. Hoshi, 2010 .

The contribution of complementary hydrogen bonding to supramolecular structure.

T. Seo, Y. Tokunaga, 2002, Chemical communications.

Elution Behavior of Organic Acids in Donnan Exclusion Chromatography

Y. Tokunaga, H. Waki, S. Ohashi, 1983 .

Donnan Exclusion – Ion Exclusion Chromatography

Y. Tokunaga, H. Waki, 1982 .

Stilbenoids isolated from the seeds of Melinjo (Gnetum gnemon L.) and their biological activity.

F. Sakan, Y. Tokunaga, Eishin Kato, 2009, Journal of agricultural and food chemistry.

Donnan Exclusion Chromatography Application to Complex Formation Studies

Y. Tokunaga, H. Waki, 1982 .

Donnan exclusion chromatography

Y. Tokunaga, H. Waki, 1980 .

Influence of a 2-fluoro substituent on diastereoselectivity in the 1,3-dipolar cycloadditions of nitrones

M. Ihara, Y. Tokunaga, K. Fukumoto, 1997 .

Influence of a 2‐Fluoro Substituent on Diastereoselectivity in the 1,3‐Dipolar Cycloadditions of Nitrones.

M. Ihara, Y. Tokunaga, K. Fukumoto, 1998 .

Unexpected Stereoselectivity of Intramolecular 1,3-Dipolar Cycloaddition Caused by the Presence of Fluorine Atom

M. Ihara, Y. Tokunaga, K. Fukumoto, 1995 .

Asymmetric total synthesis of tacamonine (pseudovincamone I) via radical cyclization

M. Ihara, Y. Tokunaga, K. Fukumoto, 1994 .

Structure and Physical Properties of Poly(L-lactic acid)/Oligomeric(D-lactic acid) Blends

Koji Nakane, N. Ogata, T. Ogihara, 2006 .

Solvent Controls Synthesis and Properties of Supramolecular Structures

J. Rebek, D. Rudkevich, J. Santamaría, 1998 .

A simple total synthesis of (±)-spirojatamol and (±)-erythrodiene via intramolecular 1,3-dipolar cycloaddition

M. Ihara, Y. Tokunaga, K. Fukumoto, 1995 .

Synthesis of Six-Membered Compounds by Environmentally Friendly Cyclization Using Indirect Electrolysis.

M. Ihara, Y. Tokunaga, K. Fukumoto, 1996, Journal of Organic Chemistry.

Solid-state defects in calcined CaA zeolite

T. Okada, H. Oka, Y. Tokunaga, 1997 .

The Reaction of Lithium-Manganese Oxides for the Cathode Materials of Rechargeable Lithium Batteries with Nonaqueous Electrolyte

Eiichi Iwata, T. Okada, H. Oka, 2001 .

Chiral Capsules. 1. Softballs with Asymmetric Surfaces Bind Camphor Derivatives

J. Rebek, Y. Tokunaga, 1998 .

A rotaxane synthesis based on stilbene photoisomerization. A photoswitchable catch and release process.

Y. Tokunaga, Youji Shimomura, K. Akasaka, 2003, Chemical communications.

Effects of Small Structural Changing on the Kinetic and Thermodynamic Stabilities of Pseudorotaxanes

Y. Tokunaga, Youji Shimomura, Nanae Wakamatsu, 2006 .

Using photoresponsive end-closing and end-opening reactions for the synthesis and disassembly of [2]rotaxanes: implications for dynamic covalent chemistry.

Y. Tokunaga, Youji Shimomura, K. Akasaka, 2009, The Journal of organic chemistry.

Stilbenoids isolated from the seeds of Melinjo (Gnetum gnemon L.) and their biological activity.

F. Sakan, Y. Tokunaga, Eishin Kato, 2009, Journal of agricultural and food chemistry.