M. Yasunami

发表

Synthesis of 2-amino- and 2-arylazoazulenes via nucleophilic aromatic substitution of 2-chloroazulenes with amines and arylhydrazines.

A. Ohta, T. Okujima, Shigeki Mori, 2017, Organic & biomolecular chemistry.

Synthesis of 2-aminoazulene derivatives. Nucleophilic and palladium-catalyzed amination of 2-substituted azulene

T. Okujima, S. Ito, A. Tajiri, 2003 .

Synthesis and reactions of 2-arylhydrazinotropones. II: Synthesis of 5-aryltropolones and B-ring-open colchicine analogues via benzidine type rearrangement of 2-(2-arylhydrazino)tropones

M. Ando, Bingzhu Yin, Hiroshi M Yamamoto, 1989 .

Synthesis of 6-Amino- and 6-Arylazoazulenes via Nucleophilic Aromatic Substitution and Their Reactivity and Properties.

A. Ohta, T. Okujima, Taku Shoji, 2019, The Journal of organic chemistry.

Synthesis of heteroarylazulenes: transition metal free coupling strategy of azulene with heterocycles

Taku Shoji, S. Ito, Masataka Watanabe, 2007 .

Electrophilic ipso-Substitution and Some Unique Reaction Behavior of 1,3,6-Tri-tert-butylazulene

T. Okujima, Taku Shoji, S. Ito, 2009 .

Synthesis of donor-acceptor chromophores by the [2 + 2] cycloaddition of arylethynyl-2H-cyclohepta[b]furan-2-ones with 7,7,8,8-tetracyanoquinodimethane.

T. Okujima, Taku Shoji, S. Ito, 2012, Organic & biomolecular chemistry.

Synthesis of redox-active, intramolecular charge-transfer chromophores by the [2+2] cycloaddition of ethynylated 2H-cyclohepta[b]furan-2-ones with tetracyanoethylene.

T. Okujima, Taku Shoji, S. Ito, 2011, Chemistry.

Reactions between 1‐Ethynylazulenes and 7,7,8,8‐Tetracyanoquinodimethane (TCNQ): Preparation, Properties, and Redox Behavior of Novel Azulene‐Substituted Redox‐Active Chromophores

T. Iwamoto, Taku Shoji, S. Ito, 2009 .

Synthesis, Properties, and Crystal Structure of DDQ-Adducts of Ethynylated 2H-Cyclohepta[b]furan-2-ones

Taku Shoji, S. Ito, M. Yasunami, 2014 .

The 〔2+2〕 cycloaddition reaction of ethynylated 2H-cyclohepta〔b〕furan-2-ones with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone

Taku Shoji, S. Ito, M. Yasunami, 2011 .

Synthesis, properties, and redox behavior of mono-, bis-, and tris[1,1,4,4,-tetracyano-2-(1-azulenyl)-3-butadienyl] chromophores binding with benzene and thiophene cores.

Taku Shoji, S. Ito, M. Yasunami, 2008, Chemistry.

Annelated dehydroannulenes fused with azulene: synthesis and properties of tetradehydro[14]- and -[16]annuleno[a]azulenes

H. Higuchi, G. Yamamoto, J. Ojima, 1994 .

ELECTRONIC STRUCTURES AND OXIDATION POTENTIALS OF SOME AZULENE DERIVATIVES

Y. Shimada, Takanori Suzuki, H. Chiba, 1996 .

Synthesis and Properties of Fluoroazulenes. II. Electrophilic Fluorination of Azulenes with N-Fluoro Reagents

H. Toda, T. Ueno, M. Yoshifuji, 1996 .

THE FIRST SYNTHESIS OF 1-FLUORO- AND 1,3-DIFLUOROAZULENES

H. Toda, T. Ueno, M. Yoshifuji, 1995 .

Synthesis and Properties of Fluoroazulenes. Part 2. Electrophilic Fluorination of Azulenes with N‐Fluoro Reagents.

H. Toda, T. Ueno, M. Yoshifuji, 1996 .

A Versatile Synthetic Method of 1-Alkylazulenes and Azulene by the iReactions of 3-Methoxycarbonyl-2H-cyclohepta(b)furan-2-one with in situ Generated Enamines.

K. Takase, Shiro Miyoshi, M. Yasunami, 1993 .

Synthesis and anti-ulcer activities of sodium alkylazulene sulfonates.

M. Yasunami, T. Tomiyama, S. Wakabayashi, 1988, Chemical & pharmaceutical bulletin.

Synthesis of thiophene-fused heptalenes by cycloaddition of azulenothiophenes with dimethyl acetylenedicarboxylate

Taku Shoji, Akari Yamazaki, Y. Ariga, 2020, Scientific Reports.

Reaction of benz[a]azulene with dimethyl acetylenedicarboxylate. Formation of a π-bond fixed heptalene derivative

Toshio Sato, M. Yoshifuji, M. Yasunami, 1995 .

Synthesis of Heteroarylazulenes: Transition Metal Free Coupling Strategy of Azulene with Heterocycles.

Taku Shoji, S. Ito, M. Yasunami, 2007 .

Tropolone derivatives as synthetic intermediates. 1. A novel synthetic method of the octahydro-2H-cyclohepta[b]furan-2-one derivatives

M. Ando, N. Hirata, K. Takase, 1987 .

Molecular Transformation of 2‐Methylazulenes: An Efficient and Practical Synthesis of 2‐Formyl‐ and 2‐Ethynylazulenes

A. Ohta, T. Okujima, Shigeki Mori, 2018 .

Synthesis and anti-peptic activity of compounds related to the metabolites of sodium 3-ethyl-7-isopropyl-1-azulenesulfonate (KT1-32).

M. Yasunami, T. Tomiyama, K. Kosakai, 1991, Chemical & pharmaceutical bulletin.

Studies on anti-ulcer agents. II. Synthesis and anti-ulcer activities of 6-isopropylazulene-1-sodium sulfonate derivatives.

M. Yasunami, T. Tomiyama, K. Kosakai, 1990, Chemical & pharmaceutical bulletin.

THE NOVEL OXIDATION OF 1-ALKYLAZULENES TO 1-ACYLAZULENES WITH DDQ

K. Takase, M. Yasunami, T. Amemiya, 1977 .

Formation and structure of 2-diazo-2,4-azulenequinone derivatives

Toshio Suzuki, M. Ando, T. Nozoe, 1995 .

The novel transition metal free synthesis of 1,1′-biazulene

Taku Shoji, S. Ito, M. Yasunami, 2007 .

Synthesis of methyl azulen[1,2-b]azulene-2-carboxylate and dimethyl azulen[1,2-b]azulene-2,4-dicarboxylate

Shigeyasu Kuroda, M. Ikeda, K. Takase, 1986 .

Reaction of 2,4‐di‐t‐butyl‐6‐methylphenylphosphonous dichloride with chloroform in the presence of lithium diisopropylamide

S. Ito, M. Yoshifuji, M. Yasunami, 1996 .

2,4-Di-t-butyl-6-methoxyphenyldithioxophosphorane as a probe for the mechanistic studies of Lawesson's Reagent

Delie An, M. Yoshifuji, M. Yasunami, 1994 .

Tropolone Derivatives as Synthetic Intermediates. Part 1. A Novel Synthetic Method of the Octahydro-2H-cyclohepta(b)furan-2-one Derivatives.

M. Ando, N. Hirata, K. Takase, 1987 .

SYNTHESIS OF NOVEL THIOPHENE-FUSED 1,1'-BIAZULENE DERIVATIVE BY THE REACTION OF AZULENO〔1,2-b〕THIOPHENE WITH N-IODOSUCCINIMIDE

Taku Shoji, S. Ito, K. Fujimori, 2013 .

Synthesis and Redox Behavior of 1-Azulenyl Sulfides and Efficient Synthesis of 1,1′-Biazulenes

Taku Shoji, S. Ito, T. Asao, 2008 .

Synthesis and Properties of Sterically-Protected 2-Azulenylphosphaethenes. II. 2-(1-Azulenyl)- and 2-(2-Azulenyl)-1-(2,4,6-tri-t-butylphenyl)phosphaethenes.

T. Ueno, M. Yoshifuji, M. Yasunami, 1994 .

Synthesis and reactions of diphosphenes carrying bulky aryl and phenoxy groups

Delie An, M. Yoshifuji, M. Yasunami, 1995 .

S1-state internal conversion of isolated azulene derivatives.

Y. Numata, K. Okuyama, M. Yasunami, 2009, The journal of physical chemistry. A.

Anomalous fluorescence spectra of 1-isopropylidene-1H-cyclopent[a]azulene and 3-isopropylidene-3H-cyclopent[a]azulene

K. Takase, M. Higashi, H. Yamaguchi, 1990 .

Synthesis and two-electron redox behavior of diazuleno[2,1-a:1,2-c]naphthalenes.

Hirokazu Kobayashi, S. Ito, A. Nomura, 2002, The Journal of organic chemistry.

Synthesis and Reactions of Diphosphenes Carrying Bulky Aryl and Phenoxy Groups.

Delie An, M. Yoshifuji, M. Yasunami, 1995 .

Reactions of halocarbenes with phosphaalkyne. Formation of acetylenes via phosphirene intermediates

M. Yoshifuji, M. Yasunami, Y. Kawai, 1990 .

Reactions of (THF) W(CO)5 with some diphosphenes carrying bulky aryl and phenoxy groups

Delie An, M. Yoshifuji, M. Yasunami, 1996 .

Preparation of Some Multifunctionalized Methylenephosphines by Reactions of Chloro[(2,4,6-tri-t-butylphenyl)phosphinidene]methyllithiums with Carbonyl Compounds

S. Ito, M. Yoshifuji, M. Yasunami, 1995 .

A New Preparative Route to Phosphaethynes from Dichlorophosphaethenes by Lithiation, Photoisomerization, and Re-lithiation Involving Migration.

H. Kawanami, N. Inamoto, M. Yoshifuji, 1992 .

Synthesis and Properties of Some Sterically Protected 2-(1- and 2-Azulenyl)-1-phosphaethenes

A. Okamoto, K. Hirotsu, T. Ueno, 1992 .

The Syntheses of Azulene Derivatives by the Reaction of 2H-Cyclohepta [b] furan-2-ones with Enamines.

K. Takase, M. Yasunami, 1981 .

Peri-selective cycloaddition reactions of 3-methoxycarbonyl-2H-cyclohepta[b]furan-2-one with 6,6-dimethylfulvene

K. Takase, H. Ohmi, M. Yasunami, 1992 .

Magnetic circular dichroism spectra of 11-(methoxycarbonyl)-cyclohept[a]azulenylium tetrafluoroborate

M. Ata, K. Takase, Hirami Shimoishi, 1982 .

A NOVEL SYNTHETIC METHOD OF THE ()-(3AALPHA ,8AALPHA )-ETHYL 8BETA -HYDROXY-6BETA -METHYL-2-OXOOCTAHYDRO-2H-CYCLOHEPTABFURAN-3ALPHA -CARBOXYLATE AND I TS CHEMICAL TRANSFORMATION TO ()-(3AALPHA ,8AALPHA )-3ALPHA ,6BETA -DIMETHY L-3,3A,4,5,6,8A-HEXAHYDRO-2H-CYCLOHEPTABFURAN-2-ONE, (+)- AND (-)-7BETA -

Toshio Suzuki, M. Ando, H. Hagiwara, 1998 .

Dehydrotropolones: a benzyne-type intermediate in the reactions of halotropolones with alkoxides☆

K. Takase, M. Yasunami, Tetsuo Yamatani, 1970 .

Studies on Antiulcer Agents. Part 2. Synthesis and Antiulcer Activities of 6-Isopropylazulene-1-sodium Sulfonate Derivatives.

K. Takase, M. Yasunami, T. Tomiyama, 1991 .

Synthesis, stability and bonding situation of tris-, bis- and mono[9-(azuleno[1,2-b]thienyl)]methyl cations.

N. Harada, S. Ito, C. Kabuto, 2003, Organic & biomolecular chemistry.

Synthesis of 2,6-Diaminoazulenes by the SNAr Reaction with Cyclic Amines

Taku Shoji, S. Ito, Y. Fujiwara, 2015 .

Direct synthesis of 2-arylazulenes by [8+2] cycloaddition of 2H-cyclohepta[b]furan-2-ones with silyl enol ethers.

R. Katoh, Taku Shoji, Akari Yamazaki, 2020, Chemical communications.

Synthesis and Properties of (3‐Phenyl‐1‐azulenyl)tetracyanobetadienes and Tris(aryltetracyanobetadiene)s Connected with 1,3,5‐Tri(1‐azulenyl)benzene Core

T. Okujima, Taku Shoji, S. Ito, 2016 .

The Bromination of 2-Methoxytropone and Its Bromo Derivatives

K. Takase, T. Nozoe, M. Yasunami, 1971 .

Temperature-dependent carbon-13 nuclear magnetic resonance spectra of tropolone acetate

D. Rabenstein, S. Masamune, T. Nozoe, 1973 .

Synthesis and Reactivities of 1,5‐ and 1,7‐Azulenequinone Derivatives. A Highly Convenient, One‐Pot Synthesis of 3‐Bromo‐1,5‐ and −1,7‐Azulenequinones by Bromination of Azulene,

T. Nozoe, H. Wakabayashi, T. Kurihara, 1998 .

Azuleno[6,5-b]indoles: Palladium-Catalyzed Oxidative Ring-Closing Reaction of 6-(Arylamino)azulenes

Taku Shoji, Y. Ariga, M. Yasunami, 2022, HETEROCYCLES.

Synthesis and Properties of Azuleno[1,2-a]acenaphthylene and Dimethyl acenaphthyleno[1,2-d]heptalene-8,9-dicarboxylate

M. Oda, Shigeyasu Kuroda, Katsuki Hayashi, 1994 .

Synthesis and properties of azuleno[2,1-a]-3-8-methano[ 10 ] annulene and its 2-methyl derivative

Shigeyasu Kuroda, M. Yamada, I. Shimao, 1992 .

The synthesis and properties of azuleno[1,2-d]bicyclo[5.4.1]dodeca-1,4,6,8,9a-pentaen-3-one and its cationic species

Shigeyasu Kuroda, I. Shimao, S. Maeda, 1989 .

SYNTHESIS OF AZULENO[1,2-b]- AND AZULENO[1,2-c]THIOPHENES BY THE REACTIONS OF 2H-CYCLOHEPTA[b]FURAN-2-ONES WITH ENAMINES OF 3-OXOTETRAHYDROTHIOPHENES

K. Takase, K. Yamane, K. Fujimori, 1983 .

Synthesis of Azulene Derivatives from 2H-Cyclohepta[b]furan-2-ones as Starting Materials: Their Reactivity and Properties

Taku Shoji, M. Yasunami, S. Ito, 2021, International journal of molecular sciences.

Synthesis of a Polycyclic π-Conjugated System Containing an Azulene Unit by the Flash Vacuum Pyrolytic Method. I. Synthesis and Properties of Cyclopent[a]azulenes

K. Takase, M. Yasunami, T. Hioki, 1992 .

SYNTHESIS OF AZULENO(1,2-B)- AND AZULENO(1,2-C)THIOPHENES BY THE REACTIONS OF 2H-CYCLOHEPTA(B)FURAN-2-ONES WITH ENAMINES OF 3-OXOTETRAHYDROTHIOPHENES

K. Takase, K. Yamane, K. Fujimori, 1984 .

Synthesis and Redox Behavior of 1,3‐Bismethylthio‐) and 1,3‐Bis(phenylthio)azulenes Bearing 2‐ and 3‐Thienyl Substituents by Palladium‐Catalyzed Cross‐Coupling Reaction of 2‐ and 6‐Haloazulenes with Thienylmagnesium Ate Complexes

T. Iwamoto, Taku Shoji, M. Yasunami, 2009 .

Synthesis of 2-Aryl- and 6-Heteroaryl-1,3-di(4-pyridyl)azulenes by Katritzky’s Pyridylation of 2-Aryl- and 6-Heteroarylazulenes

T. Okujima, Taku Shoji, M. Yasunami, 2014 .

Synthesis of azulenylheterocyclic compounds using 2-(2-azulenyl)ethynyltriphenylphosphonium bromide

Masataka Watanabe, K. Fujimori, M. Yasunami, 2003 .

Synthesis of Cyclopent(a)azulenes and 1(3)-Methylenecyclopent(a)azulene Derivatives Having an Electron Withdrawing Group at the 9-Position.

K. Takase, M. Yasunami, T. Hioki, 1993 .

Synthesis of Cyclopent(a)azulenes and 1(3)-Methylenecyclopent(a) azulene Derivatives Having an Electron-Withdrawing Group at the 9- Position.

K. Takase, M. Yasunami, T. Hioki, 2010 .

THE SYNTHESIS OF 5H-CYCLOHEPT[a]AZULEN-5-ONE AND ITS NOVEL REACTION WITH A SULFUR YLIDE: THE FORMATION OF A NEW HETEROCYCLIC SYSTEM

K. Takase, A. Takagi, M. Yasunami, 1982 .

THE FACILE SYNTHESIS OF 1- AND 2-ALKYLAZULENES BY THE REACTIONS OF 2H-CYCLOHEPTA[b]FURAN-2-ONES WITH ENAMINES OF ALDEHYDES AND ACYCLIC KETONES

A. Chen, K. Takase, M. Yasunami, 1980 .

The synthesis of cyclohept[a]azulenylium ion: A new 14π electron system

K. Takase, M. Yasunami, T. Amemiya, 1983 .

Heteroarylation of 1‐Azulenyl Methyl Sulfide: Two‐Step Synthetic Strategy for 1‐Methylthio‐3‐(heteroaryl)azulenes Using the Triflate of N‐Containing Heterocycles

Taku Shoji, M. Yasunami, Kozo Toyota, 2008 .

Synthesis of 5-heteroarylazulenes: first selective electrophilic substitution at the 5-position of azulene

Taku Shoji, Masataka Watanabe, M. Yasunami, 2007 .

Synthesis of a Polycyclic .PI.-Conjugated System Containing an Azulene Unit by the Flash Vacuum Pyrolytic Method. IV. Synthesis and Properties of 1-Isopropylidene-1H- and 3-Isopropylidene-3H-cyclopent(a)azulene.

K. Takase, C. Kabuto, M. Yasunami, 1993 .

Formation of Azulenequinone Derivatives from Variously Functionalized Azulenes by Bromine‐oxidation

H. Wakabayashi, T. Kurihara, M. Yasunami, 1997 .

SYNTHESIS OF AZULENE DERIVATIVES BY THE REACTIONS OF 2H-CYCLOHEPTA(B)FURAN-2-ONES WITH ENAMINES. IV. THE FACILE SYNTHESIS OF 1- AND 2-ALKYLAZULENES BY THE REACTIONS OF 2H-CYCLOHEPTA(B)FURAN-2-ONES WITH ENAMINES OF ALDEHYDES AND ACYCLI

A. Chen, K. Takase, P. W. Yang, 1980 .

Azuleno[2,1-b]-4,9-methano[11]annulenium perchlorate: A peripheral 18-Pi electron diatropic system

Shigeyasu Kuroda, Hiroyuki Iwaki, M. Yamada, 1991 .

SYNTHETIC STUDIES ON CYCLOHEPT(A)AZULENE AND RELATED COMPOUNDS. II. THE SYNTHESIS OF 5H-CYCLOHEPT(A)AZULEN-5-ONE AND ITS NOVEL REACTION WITH A SULFUR YLIDE: THE FORMATION OF A NEW HETEROCYCLIC SYSTEM

K. Takase, A. Takagi, M. Yasunami, 1983 .

Synthesis, Reactivity, and Properties of Benz[a]azulenes via the [8 + 2] Cycloaddition of 2H-Cyclohepta[b]furan-2-ones with an Enamine.

R. Katoh, T. Okujima, Taku Shoji, 2022, The Journal of organic chemistry.

Benz[a]azulenequinones: Reaction of Benz[a]azulenes with Pyridinium Hydrobromide Perbromide

Taku Shoji, Akari Yamazaki, R. Sekiguchi, 2022, Molbank.

Synthesis of Azulenequinones Fused with Thiophene and Furan.

A. Ohta, A. Kakehi,, T. Nozoe, 2004 .

Synthesis, Properties, and Crystal Structure of DDQ-Adducts of Ethynylated 2H-Cyclohepta[b]furan-2-ones

Taku Shoji, M. Yasunami, Erika Shimomura, 2014 .

The formation of azulene derivatives by the reaction of 2H-cyclohepta[b]furan-2-ones with enamines

K. Takase, M. Yasunami, Paw-Wang Yang, 1971 .

Formation of 3‐Bromo‐1,5‐ and −1,7‐Azulenequinones from 1‐Alkyl‐and 1‐Phenylazulenes by Substituent Extrusion on the Bromine‐ Oxidation in Aqueous THF. Remarkable Substituent Effects on the Product Distribution

H. Wakabayashi, M. Yasunami, Akifumi Takano, 1996 .

Synthesis of azulenequinones fused with thiophene and furan

A. Ohta, A. Kakehi,, T. Nozoe, 2003 .

Synthesis and Redox Behavior of Cyanovinyl-Substituted 2H-Cyclohepta[b]furan-2-ones

M. Oda, Taku Shoji, M. Yasunami, 2012 .

Synthesis and Reactivity of 3-Methylsulfinyl-2H-cyclohepta[b]furan-2-ones

Taku Shoji, Masataka Watanabe, M. Yasunami, 2008 .

A NOVEL APPROACH TO 5,5'-DIISOPROPYL-3,3'-BI-2H- CYCLOHEPTA(b)FURAN-2-ONE †

Taku Shoji, Masataka Watanabe, M. Yasunami, 2007 .

Some Oxidation and Reduction Products of 4-Acetyltropolone and Its Methyl Ethers

K. Takase, T. Nozoe, K. Shimizu, 1971 .