H. Kawai

发表

Low-temperature X-ray structural analysis of propanedinitrile derivatives substituted with a bis(4-dimethylaminophenyl)methyl group: the origin of elongation of the donor–acceptor substituted C–C bond

Takanori Suzuki, Kazunori Ono, H. Kawai, 2001 .

A novel redox switch for fluorescence: drastic UV-vis and fluorescence spectral changes upon electrolysis of a hexaphenylethane derivative of 10,10'-dimethylbiacridan

A. Migita, H. Higuchi, K. Fujiwara, 2003 .

Preparation and structure of acenaphthylene-1,2-diyldi(9-acridine) derivatives with a long C=C bond.

Ryo Katoono, T. Takeda, K. Fujiwara, 2014, Chemical communications.

Convergent synthesis of the ABCDE-ring part of ciguatoxin CTX3C

Hideki Tanaka, Daisuke Sato, A. Murai, 2004 .

Preparation and Kinetic Stabilization of Highly Strained Paracyclophanes.

H. Kawai, T. Tsuji, M. Ohkita, 2002 .

Total synthesis of pectenotoxin-2.

T. Norikura, Ryo Katoono, A. Murai, 2014, Angewandte Chemie.

Improved synthesis of C8-C20 segment of pectenotoxin-2

A. Murai, Yuki Suzuki, K. Fujiwara, 2011 .

Synthesis of the C8–C20 and C21–C30 segments of pectenotoxin 2

A. Murai, K. Fujiwara, Takanori Suzuki, 2007 .

Synthesis of the common left-half part of pectenotoxins

A. Murai, K. Fujiwara, Takanori Suzuki, 2005 .

Ultralong carbon-carbon bonds in dispirobis(10-methylacridan) derivatives with an acenaphthene, pyracene, or dihydropyracylene skeleton.

T. Takeda, Y. Hinatsu, M. Wakeshima, 2008, Chemistry.

Intramolecular triarylmethane-triarylmethylium complexes with a naphthalene-1,8-diyl skeleton: isolation, structure, and reactivities of the C--H-bridged carbocations.

T. Takeda, K. Fujiwara, Takanori Suzuki, 2007, Chemistry.

Crystal structures and redox responses coupled with ion recognition of p-benzoquinone- and hydroquinone-fused [18]crown-6.

T. Akutagawa, T. Takeda, H. Kawai, 2015, Chemistry, an Asian journal.

Facile Two-Step Synthesis of 1,10-Phenanthroline-Derived Polyaza[7]helicenes with High Fluorescence and CPL Efficiency.

Takao Saito, S. Someya, H. Kawai, 2017, Angewandte Chemie.

Preparation, properties, and X-ray structures of 5,5 ′ -bi(8-aminoquinoxalyl)s: novel Wurster-type electron donors with a heterobiaryl skeleton

K. Fujiwara, Takanori Suzuki, H. Kawai, 2004 .

Redox-Mediated Reversible σ-Bond Formation/Cleavage

T. Fukushima, Ryo Katoono, J. Nishida, 2015 .

Encapsulation-induced remarkable stability of a hydrogen-bonded heterocapsule.

S. Tsuzuki, K. Yoza, Kenji Kobayashi, 2013, Chemistry.

Bis(10-methylacridinium)s as a versatile platform for redox-active functionalized dyes and novel structures.

Ryo Katoono, T. Takeda, K. Fujiwara, 2015, Chemical record.

Expandability of Ultralong C–C Bonds: Largely Different C1–C2 Bond Lengths Determined by Low-temperature X-ray Structural Analyses on Pseudopolymorphs of 1,1-Bis(4-fluorophenyl)-2,2-bis(4-methoxyphenyl)pyracene

T. Fukushima, J. Yoshida, K. Murakoshi, 2014 .

Hexaphenylethanes with an Ultralong C–C Bond: Expandability of the C–C Bond in Highly Strained Tetraarylpyracenes

Ryo Katoono, T. Takeda, K. Fujiwara, 2013 .

Geometrical Remote Steric Effects in 4,5-Disubstituted-9,10-dihydrophenanthrenes: Expansion of Prestrained C9–C10 Bond in Di(spiroacridan) Derivatives

Ryo Katoono, T. Takeda, K. Fujiwara, 2013 .

Nonadditive Substituent Effects on Expanding Prestrained C-C Bond in Crystal: X-ray Analyses on Unsymmetrically Substituted Tetraarylpyracenes Prepared by a Flow Microreactor Method

J. Yoshida, Ryo Katoono, A. Nagaki, 2012 .

Ultralong C-C bonds in hexaphenylethane derivatives

T. Takeda, K. Fujiwara, Takanori Suzuki, 2008 .

Chromic and fluorescence response system based on the dihydrophenanthroline-bipyridine skeleton: dynamic redox behavior and metal binding properties

Masako Kato, T. Takeda, K. Fujiwara, 2007 .

4,5-Bis(diarylmethylene)-1,3-dithiole: A Novel Helical Electron Donor Exhibiting Electrochromic Behavior

S. Mikuni, H. Higuchi, K. Fujiwara, 2009 .

Spacer-Dependent Cooperativity of Helicity in Fluorescent Bishelical Foldamers Based on L-Shaped Dibenzopyrrolo[1,2-a][1,8]naphthyridine.

Yoshitaka Tsuchido, H. Kawai, Kotaro Tateno, 2021, ChemPlusChem.

Designed molecular propellers based on tetraarylterephthalamide and their chiroptical properties induced by biased helicity through transmission of point chirality.

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2008, Chemical communications.

Hydrindacene-based acetylenic macrocycles with horizontally and vertically ordered functionality arrays.

Takao Saito, Tomoko Takahashi, K. Fujiwara, 2013, Chemistry.

Short nonbond and long C–C bond in naphthalene-1,8-diylbis(10-methylacridinium) and the corresponding hexaphenylethane derivative: a new electrochromic pair exhibiting dynamic redox properties

T. Takeda, K. Fujiwara, Takanori Suzuki, 2004 .

Synthesis and Chiroptical Properties of Quinoxaline‐Fused Polyaza[5]–[7]helicenes with Orange‐Color CPL Emissions

H. Kawai, T. Otani, T. Shibata, 2021 .

Short-step synthesis and chiroptical properties of polyaza[5]-[9]helicenes with blue to green-colour emission.

H. Kawai, T. Otani, T. Shibata, 2020, Chemical communications.

Pyrazino-tetracyanonaphthoquinodimethanes: sterically deformed electron acceptors affording zwitterionic radicals

T. Fukushima, Y. Yamashita, K. Fujiwara, 2004 .

Kinetic stabilization of the [1.1]paracyclophane system: isolation and X-ray structural analysis of a [1.1]paracyclophane derivative and its interconversion with the transannular adduct.

T. Suzuki, Takanori Suzuki, H. Kawai, 2000, Chemistry.

Intramolecular methylacridan-methylacridinium complexes with a phenanthrene-4,5-diyl or related skeleton: geometry-property relationships in isolable C-H bridged carbocations.

T. Takeda, K. Fujiwara, Takanori Suzuki, 2009, Chemistry.

THREE-WAY OUTPUT MOLECULAR RESPONSE SYSTEM BASED ON TETRAKIS(3,4-DIALKOXYPHENYL)-3,4-DIHYDRO[5]HELICENES : PERTURBATION OF PROPERTIES BY LONG ALKYL CHAINS (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)

H. Kawai, Yusuke Ishigaki, S. Yoshida, 2015 .

Multi-input/multi-output molecular response system based on the dynamic redox behavior of 3,3,4,4-tetraaryldihydro[5]helicene derivatives: reversible formation/destruction of chiral fluorophore and modulation of chiroptical properties by solvent polarity.

H. Ikeda, K. Fujiwara, Takanori Suzuki, 2009, Chemistry.

Synthesis of heterocyclic compounds with adamantane-like cage structures consisting of phosphorus, sulfur, and carbon

Y. Nagumo, H. Nagase, Tsuyoshi Saitoh, 2017 .

Synthesis of the ABCDEF-ring of ciguatoxin 3C

Hideki Tanaka, Y. Kondo, Ryo Katoono, 2017 .

An Ireland–Claisen rearrangement/RCM based approach for the construction of the EF-ring of ciguatoxin 3C

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2013 .

Synthesis of the C22–C37 segment of prorocentin

A. Takemura, K. Fujiwara, Takanori Suzuki, 2011 .

Synthesis of (+)-laurencin via ring expansion of a C-glycoside derivative

A. Murai, K. Fujiwara, Takanori Suzuki, 2005 .

Synthesis and Relative Stereochemistry of the A- and F-Rings of Goniodomin A

Daisuke Sato, K. Fujiwara, Takanori Suzuki, 2007 .

A stereoselective method for the construction of the C8′–O–C6″ ether of nigricanoside-A: synthesis of simple models for the C20 lipid chain/galactosyl glycerol segment

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2013 .

Synthesis of the EF-ring segment of ciguatoxin CTX1B based on novel regioselective reduction of unsaturated cyanohydrins and ring-closing olefin metathesis

A. Takemura, A. Murai, K. Fujiwara, 2005 .

peri-Interaction between diarylmethyl and diarylmethylium units in 1,8-disubstituted naphthalenes: preference of localized structure for the C-H bridged carbocation

T. Takeda, J. Nishida, K. Fujiwara, 2004 .

Convergent synthesis of the common FGHI-ring part of ciguatoxins

A. Murai, K. Fujiwara, Takanori Suzuki, 2006 .

Synthesis of the common FGHI-ring part of ciguatoxins

A. Murai, K. Fujiwara, Takanori Suzuki, 2006 .

Formal total synthesis of hemibrevetoxin B by a convergent strategy

Daisuke Sato, A. Murai, K. Fujiwara, 2004 .

Multi-input-multi-output molecular response system based on dynamic redox behavior of hexaphenylethane-type electron donors with the tetrahydrophenanthrazepine skeleton: strong chiroptical signals through the transmission of point chirality to helicity.

K. Fujiwara, Takanori Suzuki, H. Kawai, 2007, Chemistry, an Asian journal.

Intramolecular Diels–Alder reaction of cyclopenta-1,3-diene derivatives generated in situ from 4-(pent-4-enyl)cyclopent-2-enone ethylene ketals

H. Kawai, T. Tsuji, M. Ohkita, 2002 .

Novel branched ether formation via conjugate reduction of an unsaturated cyanohydrin derivative and its synthetic application to the EF-ring segment of ciguatoxin

A. Takemura, A. Murai, K. Fujiwara, 2004 .

Exceptionally Large Difference in Bond Length among Conformational Isomorphs of a Hexaphenylethane Derivative with a Dispiropyracene Skeleton

T. Inabe, T. Takeda, K. Fujiwara, 2005 .

Synthesis of the ABC-ring models of goniodomin A: preference for the unnatural configuration at C11 of the BC-ring in a non-macrocyclic model system

K. Fujiwara, Takanori Suzuki, H. Kawai, 2008 .

[10]Paracyclophanediamides and their octadehydro derivatives: novel exotopic receptors with hydrogen-bonding sites on the bridge

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2004 .

Hydrindacenes as Versatile Supramolecular Scaffolds

H. Kawai, Hidetoshi Kawai, 2015 .

4,7-Bis(dimethylamino)benzimidazoles and twin-type derivatives: reversible two-stage redox system modulated by proton-transfer

T. Fukushima, K. Fujiwara, Takanori Suzuki, 2003 .

Induced preference for axial chirality in a triarylmethylium o,o-dimer upon complexation with natural γ-cyclodextrin: strong ECD signaling and fixation of supramolecular chirality to molecular chirality.

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2012, Chemical communications.

Hysteretic Tricolor Electrochromic Systems Based on the Dynamic Redox Properties of Unsymmetrically Substituted Dihydrophenanthrenes and Biphenyl-2,2'-Diyl Dications: Efficient Precursor Synthesis by a Flow Microreactor Method

J. Yoshida, A. Nagaki, J. Nishida, 2011, Materials.

Drastic change in racemization barrier upon redox reactions: novel chiral-memory units based on dynamic redox systems.

K. Fujiwara, Takanori Suzuki, H. Kawai, 2010, Chemical communications.

Negligible diradical character for the ultralong C–C bond in 1,1,2,2-tetraarylpyracene derivatives at room temperature

K. Murakoshi, R. Herges, T. Takeda, 2009 .

Unprecedented four-way-output molecular response system based on biphenyl-2,2′-diyldiacridiniums: induction of axial chirality through intramolecular hydrogen bonds between chiral amide groups

H. Higuchi, K. Fujiwara, Takanori Suzuki, 2008 .

Electrochiroptical systems based on biphenyl-2,2′-diyl-type dicationic dyes: strong chiroptical signals through the transmission of point chirality to axial chirality

K. Fujiwara, Takanori Suzuki, H. Kawai, 2007 .

A C(3)-symmetric chiroptical molecular propeller based on hexakis(phenylethynyl)benzene with a threefold terephthalamide: stereospecific propeller generation through the cooperative transmission of point chiralities on the host and guest upon complexation.

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2013, Chemical communications.

Dynamic molecular propeller: supramolecular chirality sensing by enhanced chiroptical response through the transmission of point chirality to mobile helicity.

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2009, Journal of the American Chemical Society.

Change in conformation upon complexation of double-armed terephthalamide hosts: dynamic molecular recognition of ditopic guests with strong CD signaling

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2006 .

Stereospecific change in conformation upon complexation of an exoditopic tetraamide host with a bis(ammonium) guest: chiral recognition and strong CD signaling.

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2005, Chemical communications.

Dynamic covalently bonded rotaxanes cross-linked by imine bonds between the axle and ring: inverse temperature dependence of subunit mobility.

Takeshi Umehara, Takashi Tsuji, Hidetoshi Kawai, 2006, Angewandte Chemie.

Entropy- and hydrolytic-driven positional switching of macrocycle between imine- and hydrogen-bonding stations in rotaxane-based molecular shuttles.

K. Fujiwara, Takanori Suzuki, H. Kawai, 2008, Journal of the American Chemical Society.

Effects of axle-core, macrocycle, and side-station structures on the threading and hydrolysis processes of imine-bridged rotaxanes.

K. Fujiwara, Takanori Suzuki, H. Kawai, 2012, Chemistry.

Dynamic Au–C σ-Bonds Leading to an Efficient Synthesis of [n]Cycloparaphenylenes (n = 9–15) by Self-Assembly

K. Osakada, S. Yamago, Yoshitaka Tsuchido, 2022, JACS Au.

An Efficient Synthesis of [n]Cycloparaphenylenes (n = 9, 12, 15) via the Self-Assembly into Macrocyclic Gold(I)-Oligophenylene Complexes Based on Dynamic Au–C σ-Bonds

K. Osakada, Yoshitaka Tsuchido, S. Saito, 2021 .

Multipoint recognition of catecholamines by hydrindacene-based receptors accompanied by the complexation-induced conformational switching.

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2005, Chemistry.

Positive homotropic allosteric binding of benzenediols in a hydrindacene-based exoditopic receptor: cooperativity in amide hydrogen bonding.

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2004, Journal of the American Chemical Society.

Stable neutral radicals based on the polyazaacene skeleton that exhibit high electrochemical amphotericity

Shuichi Suzuki, Ryo Katoono, K. Okada, 2012 .

1,4-Diaryl-7,10-dimethoxyquinoxalino[2,3-b]quinoxalines and Their Dihydro Derivatives : Redox Switching of NIR Absorption and Fluorescence

K. Fujiwara, Takanori Suzuki, H. Kawai, 2011 .

Ring-Over-Ring Deslipping From Imine-Bridged Heterorotaxanes

H. Kawai, K. Ono, Sayaka Hoshino, 2022, Frontiers in Chemistry.

Molecular Gyroscope with a trans-Cyclohexane-1,4-diimine Rotor Unit: Isolation and Characterization of a Geometric Isomer as a Formal Intermediate of Hindered Rotation

K. Fujiwara, Takanori Suzuki, H. Kawai, 2012 .

Construction of Main-Chain Type Oligorotaxanes and Their Switching Properties: Controlled Dynamic Behavior by Imine-Bonding Formation and Cleavage

K. Fujiwara, Takanori Suzuki, H. Kawai, 2011 .

Fluorescent Short-Stranded Helical Foldamers Based on L-shaped Dibenzopyrrolo[1,2-a][1,8]naphthyridine.

H. Kawai, Kotaro Tateno, K. Ono, 2019, Chemistry.

Electrochiroptical response of 2,2'-(2,2-diarylethenyl)binaphthyl-type electron donors that undergo reversible C-C bond formation/breaking upon two-electron transfer.

H. Higuchi, K. Fujiwara, Takanori Suzuki, 2003, The Journal of organic chemistry.

Intramolecular triarylmethane-triarylmethylium complex: Generation, properties, and X-ray structure of a C–H bridged carbocation

T. Takeda, K. Fujiwara, Takanori Suzuki, 2010 .

Dynamic Redox Systems as Electrochromic Materials: Bistability and Advanced Response

T. Fukushima, K. Fujiwara, Takanori Suzuki, 2007 .

Isolation and low-temperature x-ray analysis of intramolecular triarylmethane-triarylmethylium complex: preference for a C-H-bridged unsymmetric structure exhibiting a facile 1,5-hydride shift and charge-transfer interaction.

T. Takeda, K. Fujiwara, Takanori Suzuki, 2005, Journal of the American Chemical Society.

Electrochromic and unique chiroptical properties of helically deformed tetraarylquinodimethanes generated from less-hindered dicationic precursors upon reduction

T. Fukushima, Ryo Katoono, Y. Tsuji, 2014 .

7,7,8,8-Tetraaryl-o-quinodimethane stabilized by dibenzo annulation: a helical π-electron system that exhibits electrochromic and unique chiroptical properties.

T. Fukushima, Ryo Katoono, Y. Tsuji, 2013, Chemistry.

Intramolecular Chirality Transfer in trans-5,6-Diaryl-5,6-dihydro-1,10-phenanthroline-5,6-diols: Solvato- and Halochromic Responses by Circular Dichroism

K. Fujiwara, Takanori Suzuki, T. Nehira, 2010 .

Halochromic Chiroptical Response of Novel Bis(9-acridinyl)-type Fluorophores with a Helical π Framework

K. Fujiwara, Takanori Suzuki, T. Nehira, 2010 .

Four-way-output molecular response system based on the dihydrodibenzo[c,g]phenanthrene skeleton : modulation of CD and FDCD activity by acid and electron-transfer

K. Fujiwara, Takanori Suzuki, T. Nehira, 2008 .

Butane-1,4-diyl dications stabilized by steric factors: electrochiroptical response systems based on reversible interconversion between dihydro[5]helicene-type electron acceptors and electron-donating 1,1'-binaphthyls.

H. Higuchi, K. Fujiwara, Takanori Suzuki, 2005, Organic & biomolecular chemistry.

Formation of keto-carbeniums from 1,2,2-triarylacenaphthen-1-ols by breaking a long CC bond: unusual alcohol protonolysis accompanied by formal hydride abstraction

K. Fujiwara, Takanori Suzuki, H. Kawai, 2003 .

First stable 7,7,8,8-tetraaryl-o-quinodimethane: isolation, X-ray structure, electrochromic response of 9,10-bis(dianisylmethylene)-9,10-dihydrophenanthrene.

H. Higuchi, K. Fujiwara, Takanori Suzuki, 2004, Chemical communications.

The first stable tetraarylacenaphthenequinodimethanes exhibiting electrochromism with ‘write-protect’ option: preparation, highly deformed structure, and reversible interconversion with acenaphthylene-5,6-diyl dicationic dyes

K. Fujiwara, Takanori Suzuki, Kazunori Ono, 2006 .

Dynamic redox systems based on bis(spiroxanthene)-type donors with a polycyclic aromatic hydrocarbon: preparation, X-ray structures, and electrochromic response with fluorescence change

H. Higuchi, K. Fujiwara, Takanori Suzuki, 2004 .

Bis(diarylethenyl)-thiophenes,-bithiophenes, and-terthiophenes: A new series of electrochromic systems that exhibit a fluorescence response

Ryo Katoono, H. Higuchi, H. Kikuchi, 2017 .

Three-way-output response system by electric potential: UV–vis, CD, and fluorescence spectral changes upon electrolysis of the chiral ester of tetracyanoanthraquinodimethane

H. Higuchi, K. Fujiwara, Takanori Suzuki, 2004 .

Studies toward the total synthesis of armatol F: stereoselective construction of the C6 and C7 stereocenters and formation of the A-ring skeleton

Daisuke Sato, K. Fujiwara, Takanori Suzuki, 2010 .

Concise stereoselective synthesis of cis-3-alkoxy-2-carbomethoxy medium-ring oxacycles from (R)-3-(3-butenyl)-4-propynoyloxazolidin-2-one

Daisuke Sato, K. Fujiwara, Takanori Suzuki, 2008 .

Assembly of robust two-dimensional sheet structures from crystalline ring-fused malonamides via cooperative hydrogen bonding of amide groups

H. Kawai, Daisuke Hosoda, Hidetoshi Kawai, 2012 .

Stereoselective construction of an anti-β-alkoxy ether by Ireland–Claisen rearrangement for medium-ring ether synthesis

K. Fujiwara, Takanori Suzuki, H. Kawai, 2009 .

BIS(DIARYLETHENYL)THIOPHENE, -BITHIOPHENE, AND –TERTHIOPHENE : A NEW SERIES OF VIOLENE-CYANINE HYBRID-TYPE ELECTRON DONORS (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)

Ryo Katoono, H. Kawai, Yusuke Ishigaki, 2015 .

Synthesis of the DE-ring of goniodomin A and prediction of its natural relative stereochemistry

K. Fujiwara, Takanori Suzuki, H. Kawai, 2008 .

Dibenzopyrrolo[1,2-a][1,8]naphthyridines: Synthesis and Structural Modification of Fluorescent L-Shaped Heteroarenes.

M. Tsuchiya, R. Sakamoto, Takao Saito, 2017, The Journal of organic chemistry.

A New Variant of Fused Cyclic Ether Synthesis Based on Ireland-Claisen Rearrangement and RCM

Ryo Katoono, K. Fujiwara, Takanori Suzuki, 2013, Natural product communications.

PHENANTHRENE-4,5-DIYLBIS(10-METHYLACRIDINIUM) WITH A SHORT C+ - - C+ CONTACT: PREPARATION, MOLECULAR STRUCTURE, REDOX PROPERTIES, AND ELECTROCHROMIC INTERCONVERSION WITH DIHYDROPYRENE DERIVATIVE

T. Takeda, K. Fujiwara, Takanori Suzuki, 2010 .

Preparation, Properties, and X-ray Structures of Bis(10-methyl-9-methyleneacridan)-type Electron Donors with a Thiophene, Bithiophene, or Terthiophene Skeleton: Redox Switching of Thiophene–Thienoquinoid Structure Accompanied by UV–vis–NIR Electrochromic Response

T. Fukushima, Ryo Katoono, K. Fujiwara, 2013 .

Endo-Functionalized Cyclic Oligophenylenes: Synthesis and Complexation with a Chiral Phosphoric Acid

H. Kawai, K. Ono, Yusei Tanaka, 2022, ACS omega.

Model studies for the stereoselective construction of the BC-ring of armatol F based on Ireland-Claisen rearrangement and relay ring-closing olefin metathesis

K. Fujiwara, Takanori Suzuki, H. Kawai, 2010 .

Tetracyanoanthraquinodimethanes with a chiral amide group: preparation, properties, and charge-transfer photochirogenetic reaction with 1,2-dianisylacenaphthene-1,2-diol.

H. Higuchi, K. Fujiwara, Takanori Suzuki, 2005, The Journal of organic chemistry.