Yasutomo Segawa

发表

Synthesis of cycloparaphenylenes and related carbon nanorings: a step toward the controlled synthesis of carbon nanotubes.

K. Itami, H. Omachi, Yasutomo Segawa, 2012, Accounts of chemical research.

Synthesis of extended π-systems through C-H activation.

K. Itami, Yasutomo Segawa, Takehisa Maekawa, 2015, Angewandte Chemie.

Pd(OAc)2/o-chloranil/M(OTf)n: a catalyst for the direct C-H arylation of polycyclic aromatic hydrocarbons with boryl-, silyl-, and unfunctionalized arenes.

K. Itami, Yasutomo Segawa, Katsuaki Kawasumi, 2012, Organic letters.

Selective introduction of organic groups to C60 and C70 using organoboron compounds and rhodium catalyst: a new synthetic approach to organo(hydro)fullerenes.

A. Wakamiya, K. Itami, Masakazu Nambo, 2011, Chemistry, an Asian journal.

Direct arylation of polycyclic aromatic hydrocarbons through palladium catalysis.

K. Itami, Yasutomo Segawa, Katsuaki Kawasumi, 2011, Journal of the American Chemical Society.

Corannulene-Helicene Hybrids: Chiral π-Systems Comprising Both Bowl and Helical Motifs.

L. T. Scott, K. Itami, Yasutomo Segawa, 2016, Organic letters.

Synthesis of a Möbius carbon nanobelt

Y. Hijikata, K. Itami, Yasutomo Segawa, 2022, Nature Synthesis.

Synthetic Strategies of Carbon Nanobelts and Related Belt-shaped Polycyclic Aromatic Hydrocarbons.

K. Itami, Yasutomo Segawa, Kwan Yin Cheung, 2020, Chemistry.

Negatively-curved warped nanographene self-assembled on metal surfaces.

C. Pignedoli, L. T. Scott, P. Ruffieux, 2019, Journal of the American Chemical Society.

Armchair and Chiral Carbon Nanobelts: Scholl Reaction in Strained Nanorings

K. Itami, A. Yagi, Yasutomo Segawa, 2019, Chem.

Two-step synthesis of a red-emissive warped nanographene derivative via a ten-fold C–H borylation† †Electronic supplementary information (ESI) available. CCDC 1893066. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c9sc03061a

L. T. Scott, K. Itami, Kenta Kato, 2019, Chemical science.

Synthesis and Size-Dependent Properties of [12], [16], and [24]Carbon Nanobelts.

Y. Miyauchi, K. Itami, Taishi Nishihara, 2018, Journal of the American Chemical Society.

Synthesis and properties of [8]-, [10]-, [12]-, and [16]cyclo-1,4-naphthylenes† †Electronic supplementary information (ESI) available: Detailed experimental procedures, computational studies, and spectral data for all compounds. See DOI: 10.1039/c6sc04048a Click here for additional data file. Click

K. Itami, A. Yagi, Yasutomo Segawa, 2016, Chemical science.

Chemical Synthesis of Cycloparaphenylenes

K. Itami, A. Yagi, Yasutomo Segawa, 2017 .

Synthesis, Structure, and Reactivity of a Cylinder-Shaped Cyclo[12]orthophenylene[6]ethynylene: Toward the Synthesis of Zigzag Carbon Nanobelts.

K. Itami, Yasutomo Segawa, Katsuma Matsui, 2016, Organic letters.

Palladium-catalyzed direct phenylation of perylene: structural and optical properties of 3,4,9-triphenylperylene and 3,4,9,10-tetraphenylperylene

K. Itami, Yasutomo Segawa, Katsuaki Kawasumi, 2013 .

Perfluorocycloparaphenylenes

K. Itami, Taishi Nishihara, A. Yagi, 2022, Nature Communications.

Perfluorocycloparaphenylenes: Fully fluorinated carbon nanorings by Ni-mediated one-pot synthesis

K. Itami, Taishi Nishihara, A. Yagi, 2021 .

A Quintuple [6]Helicene with a Corannulene Core as a C5 -Symmetric Propeller-Shaped π-System.

L. T. Scott, K. Itami, Kenta Kato, 2018, Angewandte Chemie.

η6-Cycloparaphenylene transition metal complexes: synthesis, structure, photophysical properties, and application to the selective monofunctionalization of cycloparaphenylenes.

K. Itami, Yasutomo Segawa, Natsumi Kubota, 2015, Journal of the American Chemical Society.

A modular and size-selective synthesis of [n]cycloparaphenylenes: a step toward the selective synthesis of [n,n] single-walled carbon nanotubes.

K. Itami, S. Matsuura, H. Omachi, 2010, Angewandte Chemie.

Syntheses of PBP pincer iridium complexes: a supporting boryl ligand.

M. Yamashita, K. Nozaki, Yasutomo Segawa, 2009, Journal of the American Chemical Society.

Double-Helix Supramolecular Nanofibers Assembled from Negatively Curved Nanographenes.

K. Yonekura, S. Maki-Yonekura, L. T. Scott, 2020, Journal of the American Chemical Society.

Synthesis of a zigzag carbon nanobelt

K. Itami, Kosuke Watanabe, Yasutomo Segawa, 2020, Nature Chemistry.

C–H activation route to dibenzo[a,e]pentalenes: annulation of arylacetylenes promoted by PdCl2–AgOTf–o-chloranil

K. Itami, Yasutomo Segawa, Takehisa Maekawa, 2013 .

Curved Oligophenylenes as Donors in Shape-Persistent Donor-Acceptor Macrocycles with Solvatofluorochromic Properties.

K. Itami, Yasutomo Segawa, T. Kuwabara, 2015, Angewandte Chemie.

Synthesis and properties of all-benzene carbon nanocages: a junction unit of branched carbon nanotubes

K. Kamada, K. Itami, Yasutomo Segawa, 2013 .

Synthesis and properties of cycloparaphenylene-2,5-pyridylidene: a nitrogen-containing carbon nanoring.

K. Itami, Yasutomo Segawa, Katsuma Matsui, 2012, Organic letters.

Laterally π-Extended Dithia[6]helicenes with Heptagons: Saddle-Helix Hybrid Molecules.

K. Itami, Yasutomo Segawa, T. Fujikawa, 2017, The Journal of organic chemistry.

Flexible Reaction Pocket on Bulky Diphosphine–Ir Complex Controls Regioselectivity in para-Selective C–H Borylation of Arenes

D. Musaev, K. Itami, Brandon E. Haines, 2016 .

Thiophene-based, radial π-conjugation: synthesis, structure, and photophysical properties of cyclo-1,4-phenylene-2',5'-thienylenes.

K. Itami, Yasutomo Segawa, Hideto Ito, 2015, Angewandte Chemie.

Chemistry of boryllithium: synthesis, structure, and reactivity.

M. Yamashita, Yuta Suzuki, K. Nozaki, 2008, Journal of the American Chemical Society.

Boryllithium: Isolation, Characterization, and Reactivity as a Boryl Anion

M. Yamashita, K. Nozaki, Yasutomo Segawa, 2006, Science.

All-benzene carbon nanocages: size-selective synthesis, photophysical properties, and crystal structure.

K. Itami, Yasutomo Segawa, Katsuma Matsui, 2014, Journal of the American Chemical Society.

Hole-transporting materials based on thiophene-fused arenes from sulfur-mediated thienannulations

A. Wakamiya, K. Itami, N. Mitoma, 2018 .

Thiophene-Fused π-Systems from Diarylacetylenes and Elemental Sulfur.

K. Itami, Yasutomo Segawa, T. Fujikawa, 2016, Journal of the American Chemical Society.

Concise synthesis and crystal structure of [12]cycloparaphenylene.

N. Tokitoh, T. Sasamori, K. Itami, 2011, Angewandte Chemie.

Theoretical studies on the structures and strain energies of cycloparaphenylenes.

K. Itami, H. Omachi, Yasutomo Segawa, 2010, Organic letters.

A Non-alternant Aromatic Belt: Methylene-bridged [6]Cycloparaphenylene Synthesized from Pillar[6]arene.

K. Itami, A. Yagi, Yasutomo Segawa, 2020, Journal of the American Chemical Society.

Synthesis, properties, and crystal structures of π-extended double [6]helicenes: contorted multi-dimensional stacking lattice.

A. Wakamiya, K. Itami, A. Saeki, 2017, Organic & biomolecular chemistry.

Synthesis and Structural Features of Quadruple Helicenes: Highly Distorted π Systems Enabled by Accumulation of Helical Repulsions.

K. Itami, Yasutomo Segawa, T. Fujikawa, 2016, Journal of the American Chemical Society.

Innentitelbild: Thiophene‐Based, Radial π‐Conjugation: Synthesis, Structure, and Photophysical Properties of Cyclo‐1,4‐phenylene‐2′,5′‐thienylenes (Angew. Chem. 1/2015)

K. Itami, Yasutomo Segawa, Hideto Ito, 2015 .

Boryl anion attacks transition-metal chlorides to form boryl complexes: syntheses, spectroscopic, and structural studies on group 11 borylmetal complexes.

M. Yamashita, K. Nozaki, Yasutomo Segawa, 2007, Angewandte Chemie.

Symmetric Multiple Carbohelicenes

K. Itami, Kenta Kato, Yasutomo Segawa, 2018, Synlett.

Palladium-catalyzed C-H activation taken to the limit. Flattening an aromatic bowl by total arylation.

L. T. Scott, K. Itami, Yasutomo Segawa, 2012, Journal of the American Chemical Society.

Synthesis and characterization of hexaarylbenzenes with five or six different substituents enabled by programmed synthesis.

Junichiro Yamaguchi, K. Itami, Yasutomo Segawa, 2015, Nature chemistry.

Synthesis, Structure, and Electrochemical Property of a Bimetallic Bis-2-pyridylidene Palladium Acetate Complex

Tomohiro Fukushima, K. Itami, Yasutomo Segawa, 2017 .

Pyridine-based dicarbene ligand: synthesis and structure of a bis-2-pyridylidene palladium complex.

K. Itami, Yasutomo Segawa, Tetsushi Yoshidomi, 2013, Chemical communications.

1,3,5-Triaryl 2-pyridylidene: base-promoted generation and complexation.

K. Itami, Yasutomo Segawa, K. Hata, 2012, Chemical communications.

Metal-free hydrogenation catalysis of polycyclic aromatic hydrocarbons.

D. Stephan, Yasutomo Segawa, 2012, Chemical communications.

Pyridylidene ligand facilitates gold-catalyzed oxidative C–H arylation of heterocycles

K. Itami, Yasutomo Segawa, Hideto Ito, 2015, Beilstein journal of organic chemistry.

Ni-Catalyzed α-selective C-H borylations of naphthalene-based aromatic compounds.

A. Yagi, T. Kamei, T. Shimada, 2019, The Journal of organic chemistry.

para-C-H Borylation of Benzene Derivatives by a Bulky Iridium Catalyst.

K. Itami, Yasutomo Segawa, Yutaro Saito, 2015, Journal of the American Chemical Society.

A grossly warped nanographene and the consequences of multiple odd-membered-ring defects.

L. T. Scott, K. Itami, Yasutomo Segawa, 2013, Nature chemistry.

Isolation of a PBP-pincer rhodium complex stabilized by an intermolecular C-H σ coordination as the fourth ligand.

M. Yamashita, Maki Hasegawa, K. Nozaki, 2012, Angewandte Chemie.

Selective Transformation of Strychnine and 1,2-Disubstituted Benzenes by C–H Borylation

K. Itami, Yasutomo Segawa, Kotono Yamanoue, 2020 .

Synthesis and dimerization of chloro[10]cycloparaphenylene: a directly connected cycloparaphenylene dimer.

K. Itami, S. Matsuura, Yasutomo Segawa, 2014, Organic letters.

Synthesis, structure of borylmagnesium, and its reaction with benzaldehyde to form benzoylborane.

M. Yamashita, Yuta Suzuki, K. Nozaki, 2007, Journal of the American Chemical Society.

Crystal Structure of Boryllithium with Two THF Molecules and DFT Analysis of Its Property as a Boryl Anion

M. Yamashita, Yuta Suzuki, K. Nozaki, 2008 .

Synthesis and properties of [9]cyclo-1,4-naphthylene: a π-extended carbon nanoring.

K. Itami, A. Yagi, Yasutomo Segawa, 2012, Journal of the American Chemical Society.

Phenanthro[9,10-a]corannulene by one-step annulative π-extension of corannulene

K. Itami, Kenta Kato, Yasutomo Segawa, 2017 .

Helically Twisted Tetracene: Synthesis, Crystal Structure, and Photophysical Properties of Hexabenzo[a,c,fg,j,l,op]tetracene

K. Itami, Yasutomo Segawa, Hideto Ito, 2016, Synlett.

Structurally uniform and atomically precise carbon nanostructures

Kenichiro Itami, K. Itami, Yasutomo Segawa, 2016 .

Chemical Synthesis of Carbon Nanorings and Nanobelts

K. Itami, A. Yagi, Yasutomo Segawa, 2021, Accounts of Materials Research.

Design and Synthesis of Carbon Nanotube Segments.

Kenichiro Itami, K. Itami, A. Yagi, 2016, Angewandte Chemie.

Synthesis and Structure of [9]Cycloparaphenylene Catenane: An All-Benzene Catenane Consisting of Small Rings.

K. Itami, Yasutomo Segawa, Motonobu Kuwayama, 2020, Organic letters.

Topological molecular nanocarbons: All-benzene catenane and trefoil knot

Y. Hijikata, K. Itami, Taishi Nishihara, 2019, Science.

Topologically Unique Molecular Nanocarbons.

K. Itami, Yasutomo Segawa, David R. Levine, 2019, Accounts of chemical research.

Synthesis of a Möbius carbon nanobelt

Y. Hijikata, K. Itami, Yasutomo Segawa, 2021, Nature Synthesis.

Syntheses and properties of triborane(5)s possessing bulky diamino substituents on terminal boron atoms.

M. Yamashita, K. Nozaki, Yasutomo Segawa, 2011, Chemical communications.

Combined experimental and theoretical studies on the photophysical properties of cycloparaphenylenes.

S. Irle, K. Itami, S. Matsuura, 2012, Organic & biomolecular chemistry.

Synthesis of a carbon nanobelt

Yuhei Miyauchi, Kenichiro Itami, Taishi Nishihara, 2017, Science.

Initiation of carbon nanotube growth by well-defined carbon nanorings.

K. Itami, H. Omachi, Yasutomo Segawa, 2013, Nature chemistry.

Synthesis and properties of cycloparaphenylene-2,7-pyrenylene: a pyrene-containing carbon nanoring.

K. Itami, A. Yagi, Yasutomo Segawa, 2014, Chemical communications.

Creation of negatively curved polyaromatics enabled by annulative coupling that forms an eight-membered ring

K. Itami, S. Matsubara, K. Murakami, 2020, Nature Catalysis.

Palladium-free synthesis of [10]cycloparaphenylene

K. Itami, Yasutomo Segawa, T. Kuwabara, 2015 .

Excited States in Cycloparaphenylenes: Dependence of Optical Properties on Ring Length.

Y. Kanemitsu, K. Itami, Taishi Nishihara, 2012, The journal of physical chemistry letters.

Size-selective synthesis of [9]–[11] and [13]cycloparaphenylenes

H. Shinohara, K. Itami, S. Matsuura, 2012 .

Synthesis of open-shell ladder π-systems by catalytic C–H annulation of diarylacetylenes† †Electronic supplementary information (ESI) available: Syntheses, NMR, UV-vis-nearIR absorption, CV and crystallographic table. CCDC 1421865 (1a), 1421866 (1b). For ESI and crystallographic data in CIF or other

M. Haley, K. Itami, H. Ueno, 2015, Chemical science.

Inside Cover: Thiophene‐Based, Radial π‐Conjugation: Synthesis, Structure, and Photophysical Properties of Cyclo‐1,4‐phenylene‐2′,5′‐thienylenes (Angew. Chem. Int. Ed. 1/2015)

Kenichiro Itami, K. Itami, Yasutomo Segawa, 2015 .

Synthesis and racemization process of chiral carbon nanorings: a step toward the chemical synthesis of chiral carbon nanotubes.

K. Itami, H. Omachi, Yasutomo Segawa, 2011, Organic letters.

Size-selective complexation and extraction of endohedral metallofullerenes with cycloparaphenylene.

Yasumitsu Miyata, Yusuke Nakanishi, Hisanori Shinohara, 2014, Angewandte Chemie.

Synthesis, Structures, and Properties of π-Extended Double Helicene: A Combination of Planar and Nonplanar π-Systems.

Kenichiro Itami, K. Itami, Yasutomo Segawa, 2015, Journal of the American Chemical Society.

A Water-Soluble Warped Nanographene: Synthesis and Applications for Photoinduced Cell Death.

T. Higashiyama, Yoshikatsu Sato, K. Itami, 2018, Angewandte Chemie.

Synthesis and Structure of a Propeller-Shaped Polycyclic Aromatic Hydrocarbon Containing Seven-Membered Rings.

K. Itami, Kenta Kato, Yasutomo Segawa, 2018, Organic letters.

Nonplanar Aromatic Hydrocarbons: Design and Synthesis of Highly Strained Structures

Yasutomo Segawa, 2022, Bulletin of the Chemical Society of Japan.

Effect of nanocarbon molecules on the Arabidopsis thaliana transcriptome

T. Kinoshita, K. Itami, Kazuma Amaike, 2020, bioRxiv.

Polycyclic Arene Synthesis by Annulative π-Extension.

K. Itami, K. Murakami, Yasutomo Segawa, 2019, Journal of the American Chemical Society.

Synthesis and structural features of thiophene-fused analogues of warped nanographene and quintuple helicene† †Electronic supplementary information (ESI) available. CCDC 1865257–1865259. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c8sc04470h

K. Itami, Kenta Kato, Yasutomo Segawa, 2018, Chemical science.

Aziridinofullerene: a versatile platform for functionalized fullerenes.

K. Itami, Masakazu Nambo, Yasutomo Segawa, 2011, Journal of the American Chemical Society.

Synthesis, Properties, and Packing Structures of Corannulene-Based π-Systems Containing Heptagons.

K. Itami, Kenta Kato, Yasutomo Segawa, 2015, Chemistry, an Asian journal.

Six-fold C–H borylation of hexa-peri-hexabenzocoronene

K. Itami, Kenta Kato, A. Yagi, 2020, Beilstein journal of organic chemistry.

Selective synthesis of [7]- and [8]cycloparaphenylenes.

A. Studer, K. Itami, Yasutomo Segawa, 2014, Chemical communications.

[9]Cycloparaphenylene : Nickel-mediated Synthesis and Crystal Structure

K. Itami, S. Matsuura, H. Omachi, 2011 .

Emerging Disordered Layered-Herringbone Phase in Organic Semiconductors Unveiled by Electron Crystallography

K. Yonekura, S. Maki-Yonekura, S. Tsuzuki, 2021, Chemistry of Materials.

Exciton recombination dynamics in nanoring cycloparaphenylenes

Y. Kanemitsu, K. Itami, Taishi Nishihara, 2014 .

[9]Cycloparaphenylene (III): Nickel-Mediated Synthesis and Crystal Structure.

K. Itami, S. Matsuura, H. Omachi, 2011 .

Cycloparaphenylene-based ionic donor-acceptor supramolecule: isolation and characterization of Li⁺@C60⊂[10]CPP.

K. Itami, H. Ueno, Taishi Nishihara, 2015, Angewandte Chemie.

A Theoretical Study on the Strain Energy of Carbon Nanobelts.

K. Itami, A. Yagi, Yasutomo Segawa, 2016, Organic letters.

para‐C—H Borylation of Benzene Derivatives by a Bulky Iridium Catalyst.

K. Itami, Yasutomo Segawa, Yutaro Saito, 2015 .

C-H Borylation of Arenes: Steric-controlled Para-selectivity and Application to Molecular Nanocarbons

K. Itami, Yasutomo Segawa, Mai Nagase, 2022, Journal of Synthetic Organic Chemistry, Japan.

Diphenylphosphino- or Dicyclohexylphosphino-Tethered Boryl Pincer Ligands: Syntheses of PBP Iridium(III) Complexes and Their Conversion to Iridium−Ethylene Complexes

M. Yamashita, K. Nozaki, Yasutomo Segawa, 2009 .

Synthesis of cycloiptycenes from carbon nanobelts

K. Itami, Yasutomo Segawa, Motonobu Kuwayama, 2020, Chemical science.

Size-selective complexation and extraction of endohedral metallofullerenes with cycloparaphenylene.

R. Kitaura, H. Shinohara, Y. Miyata, 2014, Angewandte Chemie.

All-benzene carbon nanocages: size-selective synthesis, photophysical properties, and crystal structure.

K. Itami, Yasutomo Segawa, Katsuma Matsui, 2014, Journal of the American Chemical Society.

Excited States in Cycloparaphenylenes: Dependence of Optical Properties on Ring Length.

Y. Kanemitsu, K. Itami, Taishi Nishihara, 2012, The journal of physical chemistry letters.

Synthesis and properties of [9]cyclo-1,4-naphthylene: a π-extended carbon nanoring.

K. Itami, A. Yagi, Yasutomo Segawa, 2012, Journal of the American Chemical Society.

Concise synthesis and crystal structure of [12]cycloparaphenylene.

N. Tokitoh, T. Sasamori, K. Itami, 2011, Angewandte Chemie.

A theoretical study on the strain energy of helicene-containing carbon nanobelts.

K. Itami, Kosuke Watanabe, Yasutomo Segawa, 2020, Chemical communications.

Synthesis of extended π-systems through C-H activation.

K. Itami, Yasutomo Segawa, Takehisa Maekawa, 2015, Angewandte Chemie.

Thiophene-based, radial π-conjugation: synthesis, structure, and photophysical properties of cyclo-1,4-phenylene-2',5'-thienylenes.

K. Itami, Yasutomo Segawa, Hideto Ito, 2015, Angewandte Chemie.

Selective synthesis of [7]- and [8]cycloparaphenylenes.

A. Studer, K. Itami, Yasutomo Segawa, 2014, Chemical communications.

Isolation of a PBP-pincer rhodium complex stabilized by an intermolecular C-H σ coordination as the fourth ligand.

M. Yamashita, Maki Hasegawa, K. Nozaki, 2012, Angewandte Chemie.

Thiophene-Fused π-Systems from Diarylacetylenes and Elemental Sulfur.

K. Itami, Yasutomo Segawa, T. Fujikawa, 2016, Journal of the American Chemical Society.

Synthesis, Structures, and Properties of π-Extended Double Helicene: A Combination of Planar and Nonplanar π-Systems.

K. Itami, Yasutomo Segawa, T. Fujikawa, 2015, Journal of the American Chemical Society.

Synthesis and Size-Dependent Properties of [12], [16], and [24]Carbon Nanobelts.

Y. Miyauchi, K. Itami, Taishi Nishihara, 2018, Journal of the American Chemical Society.