Kosuke Oki
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View article: Dynamic helical poly[4]helicene nanoribbon
Dynamic helical poly[4]helicene nanoribbon Open
The precise synthesis of helical graphene nanoribbons (GNRs) with a controlled handedness has a transformative potential as the promising chiral carbon materials. We now report the first synthesis of a dynamic helical poly[4]helicene nanor…
View article: Correction to “Tandem Isomerization/α,β-Site-Selective and Enantioselective Addition Reactions of <i>N</i>-(3-Butynoyl)-3,5-dimethylpyrazole Induced by Chiral π–Cu(II) Catalysts”
Correction to “Tandem Isomerization/α,β-Site-Selective and Enantioselective Addition Reactions of <i>N</i>-(3-Butynoyl)-3,5-dimethylpyrazole Induced by Chiral π–Cu(II) Catalysts” Open
ADVERTISEMENT RETURN TO ARTICLES ASAPPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to "Tandem Isomerization/α,β-Site-Selective and Enantioselective Addition Reactions of N-(3-Butynoyl)-3,5-dimethylpyrazol…
View article: 2,2′‐Tethered Binaphthyl‐Embedded One‐Handed Helical Ladder Polymers: Impact of the Tether Length on Helical Geometry and Chiroptical Property
2,2′‐Tethered Binaphthyl‐Embedded One‐Handed Helical Ladder Polymers: Impact of the Tether Length on Helical Geometry and Chiroptical Property Open
Synthetic breakthroughs diversify the molecules and polymers available to chemists. We now report the first successful synthesis of a series of optically‐pure 2,2′‐tethered binaphthyl‐embedded helical ladder polymers based on quantitative …
View article: 2,2´-Tethered Binaphthyl-Embedded One-Handed Helical Ladder Polymers: Impact of the Tether Length on Helical Geometry and Chiroptical Property
2,2´-Tethered Binaphthyl-Embedded One-Handed Helical Ladder Polymers: Impact of the Tether Length on Helical Geometry and Chiroptical Property Open
Synthetic breakthroughs diversify the molecules and polymers available to chemists. We now report the first successful synthesis of a series of optically-pure 2,2´-tethered binaphthyl-embedded helical ladder polymers based on quantitative …
View article: CSD 2209100: Experimental Crystal Structure Determination
CSD 2209100: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Tandem Isomerization/α,β-Site-Selective and Enantioselective Addition Reactions of <i>N</i>-(3-Butynoyl)-3,5-dimethylpyrazole Induced by Chiral π–Cu(II) Catalysts
Tandem Isomerization/α,β-Site-Selective and Enantioselective Addition Reactions of <i>N</i>-(3-Butynoyl)-3,5-dimethylpyrazole Induced by Chiral π–Cu(II) Catalysts Open
Allenes are important building blocks, and derivatization of products via cycloadditions of allenes could become a powerful strategy for constructing carbocyclic and heterocyclic rings. However, the development of catalytic site-selective …
View article: Control of One-Handed Helicity in Polyacetylenes: Impact of an Extremely Small Amount of Chiral Substituents
Control of One-Handed Helicity in Polyacetylenes: Impact of an Extremely Small Amount of Chiral Substituents Open
Controlling the one-handed helicity in synthetic polymers is crucial for developing helical polymer-based advanced chiral materials. We now report that an extremely small amount of chiral biphenylylacetylene (BPA) monomers (ca. 0.3-0.5 mol…
View article: Secondary Structure Modulation of Triptycene-Based One-Handed Helical Ladder Polymers through π-Extension of Achiral Segments
Secondary Structure Modulation of Triptycene-Based One-Handed Helical Ladder Polymers through π-Extension of Achiral Segments Open
A series of enantiopure triptycene-based one-handed helical ladder polymers containing π-extended achiral segments with naphthalene, fluorene, and carbazole spacers was synthesized through quantitative and chemoselective ladderization of t…
View article: CCDC 2258185: Experimental Crystal Structure Determination
CCDC 2258185: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2232453: Experimental Crystal Structure Determination
CCDC 2232453: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2232450: Experimental Crystal Structure Determination
CCDC 2232450: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2232452: Experimental Crystal Structure Determination
CCDC 2232452: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2232451: Experimental Crystal Structure Determination
CCDC 2232451: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: One‐Handed Helical Polyacetylenes Bearing Axially‐Chiral 2‐Arylpyridyl‐<i>N</i>‐Oxide Units for Efficient Chromatographic Enantioseparation of Chiral Aromatic and Aliphatic Alcohols
One‐Handed Helical Polyacetylenes Bearing Axially‐Chiral 2‐Arylpyridyl‐<i>N</i>‐Oxide Units for Efficient Chromatographic Enantioseparation of Chiral Aromatic and Aliphatic Alcohols Open
A series of poly(biarylylacetylene)s (PBAs) bearing axially‐chiral ( S )‐and ( R )‐pyridyl‐ N ‐oxide residues with a methoxy, propoxy, or acetyloxy substituent at the 3‐position of the biaryl units was synthesized. All the PBAs formed a pr…
View article: CCDC 2189140: Experimental Crystal Structure Determination
CCDC 2189140: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2189142: Experimental Crystal Structure Determination
CCDC 2189142: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2151633: Experimental Crystal Structure Determination
CCDC 2151633: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2189141: Experimental Crystal Structure Determination
CCDC 2189141: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2150478: Experimental Crystal Structure Determination
CCDC 2150478: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2215720: Experimental Crystal Structure Determination
CCDC 2215720: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Stereospecific Synthesis of Enantiopure [6]Helicene Containing a Seven‐Membered Ring and [7]Helicene by Acid‐Promoted Stepwise Alkyne Annulations of Doubly Axial‐Chiral Precursors**
Stereospecific Synthesis of Enantiopure [6]Helicene Containing a Seven‐Membered Ring and [7]Helicene by Acid‐Promoted Stepwise Alkyne Annulations of Doubly Axial‐Chiral Precursors** Open
Enantiopure [6]helicene containing an embedded seven‐membered ring and carbo[7]helicene (>99 % ee) with opposite helicity were simultaneously and quantitatively (>99 %) synthesized with a perfect stereospecificity through stepwise acid‐pro…
View article: Stereospecific Synthesis of Enantiopure [6]Helicene Containing a Seven‐Membered Ring and [7]Helicene by Acid‐Promoted Stepwise Alkyne Annulations of Doubly Axial‐Chiral Precursors**
Stereospecific Synthesis of Enantiopure [6]Helicene Containing a Seven‐Membered Ring and [7]Helicene by Acid‐Promoted Stepwise Alkyne Annulations of Doubly Axial‐Chiral Precursors** Open
Enantiopure [6]helicene containing an embedded seven‐membered ring and carbo[7]helicene (>99 % ee) with opposite helicity were simultaneously and quantitatively (>99 %) synthesized with a perfect stereospecificity through stepwise acid‐pro…
View article: Defect-Free Synthesis of a Fully π-Conjugated Helical Ladder Polymer and Resolution into a Pair of Enantiomeric Helical Ladders
Defect-Free Synthesis of a Fully π-Conjugated Helical Ladder Polymer and Resolution into a Pair of Enantiomeric Helical Ladders Open
Fully π-conjugated ladder polymers with a spiral geometry represent a new class of helical polymers with great potential for organic nanodevices, but there is no precedent for an optically-active helical ladder polymer totally composed of …
View article: Stereospecific Synthesis of Enantiopure [6]Helicene Containing a Seven-Membered Ring and [7]Helicene via Acid-Promoted Stepwise Alkyne Annulations of Doubly Axial-Chiral Precursors
Stereospecific Synthesis of Enantiopure [6]Helicene Containing a Seven-Membered Ring and [7]Helicene via Acid-Promoted Stepwise Alkyne Annulations of Doubly Axial-Chiral Precursors Open
The enantiopure seven-membered ring embedded [6]helicene and carbo[7]helicene (>99% ee) with an opposite helicity were simultaneously and quantitatively (>99%) synthesized with a perfect stereospecificity through stepwise acid-promoted int…
View article: One‐Handed Helical Tubular Ladder Polymers for Chromatographic Enantioseparation**
One‐Handed Helical Tubular Ladder Polymers for Chromatographic Enantioseparation** Open
Defect‐free one‐handed contracted helical tubular ladder polymers with a π‐electron‐rich cylindrical helical cavity were synthesized by alkyne benzannulations of the random‐coil precursor polymers containing 6,6′‐linked‐1,1′‐spirobiindane‐…
View article: One‐Handed Helical Tubular Ladder Polymers for Chromatographic Enantioseparation**
One‐Handed Helical Tubular Ladder Polymers for Chromatographic Enantioseparation** Open
Defect‐free one‐handed contracted helical tubular ladder polymers with a π‐electron‐rich cylindrical helical cavity were synthesized by alkyne benzannulations of the random‐coil precursor polymers containing 6,6′‐linked‐1,1′‐spirobiindane‐…
View article: CCDC 2121256: Experimental Crystal Structure Determination
CCDC 2121256: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Substituent effects on paratropicity and diatropicity in π-extended hexapyrrolohexaazacoronene
Substituent effects on paratropicity and diatropicity in π-extended hexapyrrolohexaazacoronene Open
Substituent effects in antiaromatic homoHPHAC + and aromatic homoHPHAC 3+ were investigated by NMR, crystal structure, redox, absorption, and DFT calculation analyses.
View article: Optically-pure triptycene-based metallomacrocycles and homochiral self-sorting assisted by ladder formation
Optically-pure triptycene-based metallomacrocycles and homochiral self-sorting assisted by ladder formation Open
Optically-pure and racemic triptycene-derived ladder-type ligands self-assemble with a cis -platinum( ii ) complex to form enantiopure and racemic homochiral Pt 2 L 2 -type metallomacrocycles, respectively.