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1

Supramolecular graphyne: a C(sp)-H???N hydrogen-bonded unique network structure of 2,4,6-triethynyl-1,3,5-triazine

Ohkita, Masakazu, Kawano, Miki, Suzuki, Takanori, Tsuji, Takashi

Journal:

Chemical Communications

Year:

2002

Language:

english

File:

PDF, 134 KB

english, 2002

2

Ein kinetisch stabilisiertes [1.1]Paracyclophan – Isolierung und Röntgenstrukturanalyse

Hidetoshi Kawai, Takanori Suzuki, Masakazu Ohkita, Takashi Tsuji

Journal:

Angewandte Chemie

Year:

1998

Language:

german

File:

PDF, 113 KB

german, 1998

3

Preparation, Structure, and Redox Reactions of Nine-Membered Cyclic Peroxides: A Novel Electrochromic System Undergoing Reversible Extrusion and Trapping of O2

Takanori Suzuki, Jun-ichi Nishida, Masakazu Ohkita, Takashi Tsuji

Journal:

Angewandte Chemie

Year:

2000

Language:

english

File:

PDF, 144 KB

english, 2000

4

Helicity Coding: Programmed Molecular Self-Organization of Achiral Nonbiological Strands into Multiturn Helical Superstructures: Synthesis and Characterization of Alternating Pyridine–Pyrimidine Oligomers

Masakazu Ohkita, Jean-Marie Lehn, Gerhard Baum, Dieter Fenske

Journal:

Chemistry - A European Journal

Year:

1999

Language:

english

File:

PDF, 414 KB

english, 1999

5

A Kinetically Stabilized [1.1]Paracyclophane: Isolation and X-Ray Structural Analysis

Hidetoshi Kawai, Takanori Suzuki, Masakazu Ohkita, Takashi Tsuji

Journal:

Angewandte Chemie International Edition

Year:

1998

Language:

english

File:

PDF, 112 KB

english, 1998

6

Preparation, Structure, and Redox Reactions of Nine-Membered Cyclic Peroxides: A Novel Electrochromic System Undergoing Reversible Extrusion and Trapping of O2

Takanori Suzuki, Jun-ichi Nishida, Masakazu Ohkita, Takashi Tsuji

Journal:

Angewandte Chemie International Edition

Year:

2000

Language:

english

File:

PDF, 146 KB

english, 2000

7

A Redox Switch Based on Dihydro[5]helicene: Drastic Chiroptical Response Induced by Reversible C−C Bond Making/Breaking upon Electron Transfer

Jun-ichi Nishida, Takanori Suzuki, Masakazu Ohkita, Takashi Tsuji

Journal:

Angewandte Chemie

Year:

2001

Language:

english

File:

PDF, 99 KB

english, 2001

8

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

Hidetoshi Kawai, Takanori Suzuki, Masakazu Ohkita, Takashi Tsuji

Journal:

Chemistry - A European Journal

Year:

2000

Language:

english

File:

PDF, 215 KB

english, 2000

9

A Redox Switch Based on Dihydro[5]helicene: Drastic Chiroptical Response Induced by Reversible C−C Bond Making/Breaking upon Electron Transfer

Jun-ichi Nishida, Takanori Suzuki, Masakazu Ohkita, Takashi Tsuji

Journal:

Angewandte Chemie International Edition

Year:

2001

Language:

english

File:

PDF, 98 KB

english, 2001

10

ChemInform Abstract: Synthesis and Reaction of 1,4-Acetal-Bridged 2,3,5,6-Tetramethylidenebicyclo[2.2.0]hexane: The First Diels—Alder Route to Dewar Benzenes.

Masakazu Ohkita, Takanori Suzuki, Takashi Tsuji

Journal:

Year:

2000

File:

PDF, 36 KB

2000

11

ChemInform Abstract: A 2,3,5,6-Tetramethylenebicyclo[2.2.0]hexane Derivative: A Novel Bisdiene Molecule That Produces a Dewar Benzene Skeleton Upon Two Successive Diels—Alder Reactions with Dienophiles.

Masakazu Ohkita, Kieko Sano, Sotoyuki Dohba, Yuko Fujita, Takanori Suzuki, Takashi Tsuji

Journal:

Year:

2000

Language:

english

File:

PDF, 36 KB

english, 2000

12

ChemInform Abstract: Preparation, Structure, and Unique Redox Properties of Mono-, Bis-, and Tris(diarylmethylene)-1,3,5-trithianes and Related Compounds.

Takanori Suzuki, Tsuyoshi Yoshino, Jun-ichi Nishida, Masakazu Ohkita, Takashi Tsuji

Journal:

Year:

2000

File:

PDF, 33 KB

2000

13

ChemInform Abstract: Preparation, X-Ray Structures and Unique Redox Reactions of Novel 2,2′-(2,2-Dimethylpropane-1,3-diylidene)bis(1,3-benzodithiole)-type Electron Donors Fused with a Naphthalene Ring.

Takanori Suzuki, Tsuyoshi Yoshino, Masakazu Ohkita, Takashi Tsuji

Journal:

Year:

2001

File:

PDF, 26 KB

2001

14

ChemInform Abstract: Synthesis and Characterization of [46]Paracyclophanedodecayne Derivative.

Masakazu Ohkita, Kohta Ando, Takashi Tsuji

Journal:

Year:

2002

File:

PDF, 26 KB

2002

15

ChemInform Abstract: Preparation and Kinetic Stabilization of Highly Strained Paracyclophanes

Takashi Tsuji, Masakazu Ohkita, Hidetoshi Kawai

Journal:

Year:

2002

File:

PDF, 24 KB

2002

16

ChemInform Abstract: Intramolecular Diels—Alder Reaction of Cyclopenta-1,3-diene Derivatives Generated in situ from 4-(Pent-4-enyl)cyclopent-2-enone Ethylene Ketals.

Masakazu Ohkita, Hidetoshi Kawai, Takashi Tsuji

Journal:

Year:

2002

File:

PDF, 30 KB

2002

17

[2π + 2σ] Type Cycloaddition Reactions of Naphtho[b]cyclopropene with Imine or Carbonyl Derivatives Conjugated with Heteroaromatic Ring to Form Naphtho[b]dihydropyrroles or Furans.

Katsuhiro Saito, Katsuhiko Ono, Masakazu Ohkita, Machiko Fukaya, Kotaro Ono, Yoji Kondo

Journal:

Year:

2003

File:

PDF, 105 KB

2003

18

Reactions of Naphtho[b]cyclopropene with Isothiocyanate Derivatives to Give [2π + 2σ] Type Cycloadducts Using the Thiocarbonyl Moieties as 2π Components.

Katsuhiro Saito, Satoshi Hagari, Naoko Ito, Tomoko Kuriyama, Katsuhiko Ono, Masakazu Ohkita

Journal:

Year:

2004

File:

PDF, 75 KB

2004

19

Two Morphologies of Stable, Highly Ordered Assemblies of a Long-Chain-Substituted [2 × 2]-Grid-Type FeII Complex Adsorbed on HOPG

Ahmed Mourran, Ulrich Ziener, Martin Möller, Esther Breuning, Masakazu Ohkita, Jean-Marie Lehn

Journal:

European Journal of Inorganic Chemistry

Year:

2005

Language:

english

File:

PDF, 224 KB

english, 2005

20

Macrocyclic and Acyclic Bis(2,5-diphenyl-1,3,4-oxadiazole)s with Electron-Transporting and Hole-Blocking Ability in Organic Electroluminescent Devices

Katsuhiko Ono, Seiichi Ezaka, Akinori Higashibata, Ryohei Hosokawa, Masakazu Ohkita, Katsuhiro Saito, Michitaka Suto, Masaaki Tomura, Yosuke Matsushita, Shigeki Naka, Hiroyuki Okada, Hiroyoshi Onnagaw

Journal:

Macromolecular Chemistry and Physics

Year:

2005

Language:

english

File:

PDF, 166 KB

english, 2005

21

Photophysical characteristics of 4,4′-bis(N-carbazolyl)tolan derivatives and their application in organic light emitting diodes

Masakazu Ohkita, Ayataka Endo, Kimihiro Sumiya, Hajime Nakanotani, Takanori Suzuki, Chihaya Adachi

Journal:

Journal of Luminescence

Year:

2011

Language:

english

File:

PDF, 449 KB

english, 2011

22

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

Hiroki Higuchi, Koji Ichioka, Hidetoshi Kawai, Kenshu Fujiwara, Masakazu Ohkita, Takashi Tsuji, Takanori Suzuki

Journal:

Tetrahedron Letters

Year:

2004

Language:

english

File:

PDF, 275 KB

english, 2004

23

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

Hidetoshi Kawai, Takayuki Nagasu, Takashi Takeda, Kenshu Fujiwara, Takashi Tsuji, Masakazu Ohkita, Jun-ichi Nishida, Takanori Suzuki

Journal:

Tetrahedron Letters

Year:

2004

Language:

english

File:

PDF, 317 KB

english, 2004

24

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

Takanori Suzuki, Shinichi Iwashita, Tsuyoshi Yoshino, Hidetoshi Kawai, Kenshu Fujiwara, Masakazu Ohkita, Takashi Tsuji, Kazunori Ono, Masami Takenaka

Journal:

Tetrahedron Letters

Year:

2006

Language:

english

File:

PDF, 166 KB

english, 2006

25

Experimental and computational studies of naphtho[2,3-c]tropone: a highly polarized novel troponid system

Masakazu Ohkita, Kieko Sano, Takanori Suzuki, Takashi Tsuji

Journal:

Tetrahedron Letters

Year:

2001

Language:

english

File:

PDF, 77 KB

english, 2001

26

Solid state and solution conformation of 2-pyridinecarboxylic acid hydrazides: a new structural motif for foldamers

Joachim Garric, Jean-Michel Léger, Axelle Grelard, Masakazu Ohkita, Ivan Huc

Journal:

Tetrahedron Letters

Year:

2003

Language:

english

File:

PDF, 252 KB

english, 2003

27

Direct synthesis of 2-norbornanone dithioacetals from 2-cyclopentenone dithioacetals and dienophiles. Synthetic application of thermal interconversion between cyclic dithioacetals and the ring-opened vinyl sulfide forms

Masakazu Ohkita, Osamu Nishizawa, Toshiro Imai, Shinya Nishida, Takashi Tsuji

Journal:

Year:

1996

Language:

english

File:

PDF, 928 KB

english, 1996

28

Crystal engineering using very short and linear C(sp)–H⋯N hydrogen bonds: formation of head-to-tail straight tapes and their assembly into nonlinear optical polar crystals

Ohkita, Masakazu, Suzuki, Takanori, Tsuji, Takashi, Nakatani, Keitaro

Journal:

Chemical Communications

Year:

2001

Language:

english

File:

PDF, 92 KB

english, 2001

29

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

Ohkita, Masakazu, Kawai, Hidetoshi, Tsuji, Takashi

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

2002

Language:

english

File:

PDF, 154 KB

english, 2002

30

A C3-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

Katoono, Ryo, Kawai, Hidetoshi, Ohkita, Masakazu, Fujiwara, Kenshu, Suzuki, Takanori

Journal:

Chemical Communications

Year:

2013

Language:

english

File:

PDF, 1.42 MB

english, 2013

31

A one-step synthesis of 2-norbornanone ethylene acetals from 2-cyclopenten-1-one ethylene acetals and dienophiles via [2 + 4] cycloaddition of in situ generated 2-(2-hydroxyethoxy)cyclopenta-1,3-dienes and intramolecular reacetalization

Ohkita, Masakazu, Nishizawa, Osamu, Tsuji, Takashi, Nishida, Shinya

Journal:

Journal of Organic Chemistry

Year:

1993

Language:

english

File:

PDF, 1.17 MB

english, 1993

32

Preparation, Structure, and Unique Redox Properties of Mono-, Bis-, and Tris(diarylmethylene)-1,3,5-trithianes and Related Compounds

Suzuki, Takanori, Yoshino, Tsuyoshi, Nishida, Jun-ichi, Ohkita, Masakazu, Tsuji, Takashi

Journal:

Journal of Organic Chemistry

Year:

2000

Language:

english

File:

PDF, 126 KB

english, 2000

33

.pi.-Facial selectivity in Diels-Alder reactions of [4.3.2]propella-2,4,8,10-tetraen-7-one and its derivatives. Synthesis of 2,5-etheno[4.3.2]propella-3,8,10-trien-7-ones

Tsuji, Takashi, Ohkita, Masakazu, Nishida, Shinya

Journal:

Journal of Organic Chemistry

Year:

1991

Language:

english

File:

PDF, 985 KB

english, 1991

34

[1.1]Paracyclophane. Spectroscopic evidence for generation of the bis(methoxycarbonyl) derivative

Tsuji, Takashi, Ohkita, Masakazu, Nishida, Shinya

Journal:

Journal of the American Chemical Society

Year:

1993

Language:

english

File:

PDF, 215 KB

english, 1993

35

Experimental and Computational Studies of the Infrared Spectra of 3,4-Benzotropone and Naphtho[2,3- c ]tropone: Medium Effects on the Molecular Structures of the Tropones

Sato, Tadatake, Niino, Hiroyuki, Ohkita, Masakazu

Journal:

Journal of Physical Chemistry A

Year:

2004

Language:

english

File:

PDF, 132 KB

english, 2004

36

Generation, Spectroscopic Characterization, and Reactions of 3,4-Benzotropone. Distinctive Photochemical Behavior of 6,7-Benzobicyclo[3.2.0]hepta-3,6-dien-2-one in Rigid Glass at Low Temperature and in Fluid Solution

Ohkita, Masakazu, Nishida, Shinya, Tsuji, Takashi

Journal:

Journal of the American Chemical Society

Year:

1999

Language:

english

File:

PDF, 208 KB

english, 1999

37

Syntheses of Acetylenic Oligophenylene Macrocycles Based on a Novel Dewar Benzene Building Block Approach

Ohkita, Masakazu, Ando, Kohta, Suzuki, Takanori, Tsuji, Takashi

Journal:

Journal of Organic Chemistry

Year:

2000

Language:

english

File:

PDF, 89 KB

english, 2000

38

Superperiodic Assembly of 2,6-Diethynylpyridine through Weak Hydrogen Bonds at the 1-Phenyloctane/HOPG Interface

Otsuki, Joe, Arai, Yuki, Amano, Makoto, Sawai, Hirokazu, Ohkita, Masakazu, Hayashi, Tomohiro, Hara, Masahiko

Journal:

Year:

2008

Language:

english

File:

PDF, 877 KB

english, 2008

39

Tetracyanoanthraquinodimethanes with a Chiral Amide Group: Preparation, Properties, and Charge-Transfer Photochirogenetic Reaction with 1,2-Dianisylacenaphthene-1,2-diol †

Suzuki, Takanori, Ichioka, Koji, Higuchi, Hiroki, Kawai, Hidetoshi, Fujiwara, Kenshu, Ohkita, Masakazu, Tsuji, Takashi, Takahashi, Yasutake

Journal:

Journal of Organic Chemistry

Year:

2005

Language:

english

File:

PDF, 208 KB

english, 2005

40

[1.1]Paracyclophane. Photochemical Generation from the Corresponding Bis(Dewar benzene) Derivative and Theoretical Study of Its Structure and Strain Energy

Tsuji, Takashi, Ohkita, Masakazu, Konno, Tomohisa, Nishida, Shinya

Journal:

Journal of the American Chemical Society

Year:

1997

Language:

english

File:

PDF, 342 KB

english, 1997

41

Synthesis and photochemical reaction of [4.3.2]propella-2,4,8,10-tetraen-7-one

Ohkita, Masakazu, Tsuji, Takashi, Suzuki, Masayuki, Murakami, Masashi, Nishida, Shinya

Journal:

Journal of Organic Chemistry

Year:

1990

Language:

english

File:

PDF, 1.12 MB

english, 1990

42

Functionalization and Kinetic Stabilization of the [4]Paracyclophane System and Aromaticity of Its Extremely Bent Benzene Ring

Tsuji, Takashi, Okuyama, Masahiro, Ohkita, Masakazu, Kawai, Hidetoshi, Suzuki, Takanori

Journal:

Journal of the American Chemical Society

Year:

2003

Language:

english

File:

PDF, 224 KB

english, 2003

43

Preparation, X-ray structures and unique redox reactions of novel 2,2′-(2,2-dimethylpropane-1,3-diylidene)bis(1,3-benzodithiole)-type electron donors fused with a naphthalene ring

Suzuki, Takanori, Yoshino, Tsuyoshi, Ohkita, Masakazu, Tsuji, Takashi

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

2000

Language:

english

File:

PDF, 121 KB

english, 2000

44

First Dewar benzene approach to acetylenic oligophenylene macrocycles: synthesis and structure of a molecular rectangle bearing two spindles

Ohkita, Masakazu, Ando, Kohta, Yamamoto, Ken-ichi, Suzuki, Takanori, Tsuji, Takashi

Journal:

Chemical Communications

Year:

2000

Language:

english

File:

PDF, 52 KB

english, 2000

45

Kinetic stabilization of the o-quinoidal 3,4-benzotropone system

Ohkita, Masakazu, Sano, Kieko, Ono, Katsuhiko, Saito, Katsuhiro, Suzuki, Takanori, Tsuji, Takashi

Journal:

Organic & Biomolecular Chemistry

Year:

2004

Language:

english

File:

PDF, 292 KB

english, 2004

46

Dual-mode electrochromism switched by proton transfer: dynamic redox properties of bis(diarylmethylenium)-type dyes

Suzuki, Takanori, Higuchi, Hiroki, Ohkita, Masakazu, Tsuji, Takashi

Journal:

Chemical Communications

Year:

2001

Language:

english

File:

PDF, 939 KB

english, 2001

47

Synthesis and characterization of [46]paracyclophanedodecayne derivative

Ohkita, Masakazu, Ando, Kohta, Tsuji, Takashi

Journal:

Chemical Communications

Year:

2001

Language:

english

File:

PDF, 124 KB

english, 2001

48

Synthesis and reaction of 1,4-acetal-bridged 2,3,5,6-tetramethylidene-bicyclo[2.2.0]hexane: the first Diels–Alder route to Dewar benzenes

Ohkita, Masakazu, Suzuki, Takanori, Tsuji, Takashi

Journal:

Chemical Communications

Year:

1999

Language:

english

File:

PDF, 51 KB

english, 1999

49

Reaction of cyclopent-2-en-1-one ethylene acetal with dienophiles via its ring-opened enol ether form. Single step synthesis of norbornan-2-one ethylene acetals

Ohkita, Masakazu, Tsuji, Takashi, Nishida, Shinya

Journal:

Journal of the Chemical Society Chemical Communications

Year:

1991

Language:

english

File:

PDF, 322 KB

english, 1991

50

A 2,3,5,6-tetramethylenebicyclo[2.2.0]hexane derivative: a novel bisdiene molecule that produces a Dewar benzene skeleton upon two successive Diels–Alder reactions with dienophiles

Ohkita, Masakazu, Sano, Kieko, Dohba, Sotoyuki, Fujita, Yuko, Suzuki, Takanori, Tsuji, Takashi

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

2000

Language:

english

File:

PDF, 136 KB

english, 2000