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R. Umeda · SciRah

Researcher profile · Semantic Scholar

R. Umeda

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R. Umeda — researcher profile on SciRah

h-index: 15
Works: 112
Citations: 691

Most-cited papers

Tetradehydrodinaphtho[10]annulene: a hitherto unknown dehydroannulene and a viable precursor to stable zethrene derivatives.
R. Umeda, Daijiro Hibi, K. Miki, Y. Tobe
2009Organic Letters80 citations
Semantic Scholar
Resonance Raman spectra of polyyne molecules C10H2 and C12H2 in solution
T. Wakabayashi, H. Tabata, T. Doi, Hiroyuki Nagayama +8 more
200742 citations
Semantic Scholar
Rhenium‐Catalyzed Benzannulation of o‐Alkynylbenzaldehyde with Alkynes to Multiple 2,3‐Disubstituted Naphthalenes
R. Umeda, Kenta Kaiba, Shigeru Morishita, Y. Nishiyama
201135 citations
Semantic Scholar
Tetradehydrodinaphtho[10]annulene and its transformation into zethrene: A hitherto unknown dehydroannulene and a forgotten aromatic hydrocarbon
R. Umeda, Daijiro Hibi, K. Miki, Y. Tobe
201029 citations Open access
Semantic Scholar
Ag-catalyzed stereoselective cyclohexadienyl transfer: a novel entry into arylphenylmethanols.
R. Umeda, A. Studer
2008Organic Letters25 citations
Semantic Scholar
π-Sufficient heteroaromatic compounds fused naphthalimide unit as novel solvatochromic fluorophores
R. Umeda, Hiroaki Nishida, Motohiro Otono, Y. Nishiyama
201123 citations
Semantic Scholar
Rhenium complex-catalyzed acylative cleavage of ethers with acyl chlorides
R. Umeda, T. Nishimura, Kenta Kaiba, Toshimasa Tanaka +2 more
201123 citations
Semantic Scholar
Rhenium complex-catalyzed Meinwald rearrangement reactions of oxiranes
R. Umeda, M. Muraki, Y. Nakamura, Tomoyuki Tanaka +2 more
201722 citations
Semantic Scholar
Molecular propellers that consist of dehydrobenzo[14]annulene blades.
S. Nobusue, Y. Mukai, Yoshihiko Fukumoto, R. Umeda +3 more
2012Chemistry22 citations
Semantic Scholar
Selective Synthesis of Quinolines and Indoles: Sulfur-Assisted or Selenium-Catalyzed Reaction of β-(2-Nitrophenyl)-α,β-unsaturated Ketones with Carbon Monoxide
R. Umeda, H. Kouno, T. Kitagawa, Tomohiro Okamoto +3 more
201418 citations
Semantic Scholar
Rhenium-Catalyzed Regioselective Synthesis of 1,2-Disubstituted Naphthalenes.
R. Umeda, Satoru Nishi, Aya Kojima, Kenta Kaiba +1 more
201317 citations
Semantic Scholar
Synthesis of multisubstituted 1H-pyrrole: selenium-catalyzed reaction of γ-nitro substituted carbonyl compounds and carbon monoxide
R. Umeda, Tsukasa Mashino, Y. Nishiyama
201416 citations
Semantic Scholar
Synthesis and physical properties of zethrene derivatives bearing donor/acceptor substituents at 7,14-positions.
Daijiro Hibi, Kenichi Kitabayashi, Akihiro Shimizu, R. Umeda +1 more
2013Organic and biomolecular chemistry15 citations
Semantic Scholar
Synthesis of Dibenz[a,h]anthracenes by Pd-Catalyzed Intramolecular Double-cyclization of (Z,Z)-p-Styrylstilbenes
R. Umeda, S. Miyake, Y. Nishiyama
201214 citations
Semantic Scholar
Facile Synthesis of 3,3′-Disubstituted 2,2′-Binaphthyls by Transition-metal-catalyzed Double Benzannulation
R. Umeda, Hiromasa Tabata, Y. Tobe, Y. Nishiyama
201413 citations
Semantic Scholar
Cesium Carbonate-Catalyzed α-Phenylchalcogenation of Carbonyl Compounds with Diphenyl Dichalcogenide
Y. Nishiyama, Yuya Koguma, Toshimasa Tanaka, R. Umeda
2009Molecules13 citations Open access
Semantic Scholar
Rhenium complex-catalyzed carbon-carbon formation of alcohols and organosilicon compounds
R. Umeda, Toshifumi Jikyo, K. Toda, Issey Osaka +1 more
201812 citations
Semantic Scholar
Synthesis and Photophysical Properties of 9,10-Bis(3-aryl-2-naphthyl)anthracenes
R. Umeda, M. Kimura, Y. Tobe, Y. Nishiyama
201611 citations
Semantic Scholar
Rhenium-catalyzed reaction of carbonyl compounds with ketene silyl acetals
Y. Nishiyama, Kenta Kaiba, R. Umeda
201011 citations
Semantic Scholar
Rhenium-catalyzed α-alkylation of enol acetates with alcohols or ethers
R. Umeda, Yuuki Takahashi, Takaaki Yamamoto, Hideki Iseki +2 more
2018Journal of Organometallic Chemistry10 citations
Semantic Scholar
Selenium‐catalyzed reductive cyclization and carbocyclization of 2,2′‐dinitrostilbenes with carbon monoxide: One‐shot synthesis of indolo[1,2‐c]quinazolinones
R. Umeda, Shigeru Morishita, Y. Nishiyama
201110 citations
Semantic Scholar
PtCl2-Catalyzed Cyclization of o-Diethynylbenzene Derivatives Triggered by Intramolecular Nucleophilic Attack
K. Miki, Hiroyuki Kuge, R. Umeda, M. Sonoda +1 more
201110 citations
Semantic Scholar
Formation of naphthodithiophene isomers by flash vacuum pyrolysis of 1,6-di(2-thienyl)- and 1,6-di(3-thienyl)-1,5-hexadien-3-ynes
R. Umeda, H. Fukuda, K. Miki, S. M. Abdur Rahman +2 more
200910 citations Open access
Semantic Scholar
Selective introducing of aryl and amino groups: reaction of benzanthrone and organometallic reagents
R. Umeda, Teruaki Namba, Tomohiro Yoshimura, Masamichi Nakatsukasa +1 more
20139 citations
Semantic Scholar
Fritsch—Buttenberg—Wiechell Rearrangement to Alkynes from gem-Dihaloalkenes with Lanthanum Metal.
R. Umeda, Takumi Yuasa, Namika Anahara, Y. Nishiyama
20119 citations
Semantic Scholar
Rhenium complex-catalyzed deoxygenation and silylation of alcohols with hydrosilane
Y. Nishiyama, Shijie Xu, Yuuki Hanatani, Susumu Tsuda +1 more
2022Tetrahedron Letters8 citations Open access
Semantic Scholar
Metal-Free Benzannulation to Synthesis of 2,3-Disubstituted Naphthalenes: Reaction of 2-(Phenylethynyl)benzaldehyde and Alkynes by Bronsted Acid
R. Umeda, N. Ikeda, Masahiro Ikeshita, K. Sumino +2 more
20177 citations Open access
Semantic Scholar
Rhenium complex-catalyzed coupling reaction of enol acetates with alcohols
R. Umeda, Yuuki Takahashi, Y. Nishiyama
20147 citations
Semantic Scholar
Diphenyl Diselenide-Assisted α-Phenylthiolation of Carbonyl Compounds with Diphenyl Disulfide
Hiroaki Anbou, R. Umeda, Y. Nishiyama
20117 citations
Semantic Scholar
Synthesis of 1,2-Dihydroisoquinolines via Rhenium-catalyzed Tandem Cyclization and Nucleophilic Addition of 2-(1-Alkynyl)arylaldimines
R. Umeda, T. Ishida, Yota Nakagawa, Mitsuru Inoue +2 more
2018Chemistry Letters6 citations
Semantic Scholar
SYNTHESIS OF INDOLES : SULFUR-ASSISTED REACTION OF 2-NITROSTILBENES WITH CARBON MONOXIDE
Y. Nishiyama, R. Umeda, Y. Nishimoto, Tsukasa Mashino
20136 citations Open access
Semantic Scholar
Selective Metallation of 3-Halothiophenes: Practical Methods for the Synthesis of 2-Bromo-3-formylthiophene
M. Sonoda, Shoko Kinoshita, Thanh Luu, H. Fukuda +3 more
20096 citations
Semantic Scholar
Rhenium-catalyzed synthetic method of 1,2-dihydroisoquinolines and isoquinolines by the intramolecular cyclization of 2-alkynylaldimines or 2-alkynylbenzylamines
R. Umeda, T. Ishida, Shintaro Mori, Hiroki Yashima +4 more
2024Tetrahedron5 citations Open access
Semantic Scholar
Selenium-Catalyzed Deoxygenative Reduction of Aliphatic Nitro Compounds with Carbon Monoxide
Y. Nishiyama, S. Ikeda, Hiroaki Nishida, R. Umeda
20105 citations
Semantic Scholar
Rhenium complex-catalyzed N-allylation and N-benzylation of amines with alcohols
R. Umeda, Shiori Shimaoka, S. Mori, Tsubasa Takagishi +1 more
2023Tetrahedron Letters4 citations Open access
Semantic Scholar
Rhenium-catalyzed Disproportionation of Allylic Alcohols and Selective Reduction of Allylic Alcohol with Secondary Alcohol
Yutaka Nishiyama, Takaaki Yamamoto, Shintaro Mori, R. Umeda
2023Tetrahedron Letters4 citations Open access
Semantic Scholar
Selective synthesis of 1-halonaphthalenes by copper-catalyzed benzannulation
R. Umeda, R. Ueda, Taiki Tanaka, Akitsugu Hayashi +4 more
20204 citations
Semantic Scholar
Facile and practical synthesis of π-extended oxepins by benzannulation and intramolecular cyclization
R. Umeda, Y. Shimizu, Yutaka Ida, Masahiro Ikeshita +3 more
2019Tetrahedron Letters4 citations
Semantic Scholar
A novel lanthanum metal-assisted reaction of diaryl ketones and electrophiles
R. Umeda, Masashi Ninomiya, Toshiaki Nishino, M. Kishida +4 more
20154 citations
Semantic Scholar
Rhenium Complex‐Catalyzed Coupling Reaction of Enol Acetates with Alcohols.
R. Umeda, Yuuki Takahashi, Y. Nishiyama
20153 citations
Semantic Scholar
Synthesis of Dibenz[a,h]anthracenes by Pd-Catalyzed Intramolecular Double-Cyclization of (Z,Z)-p-Styrylstilbenes.
R. Umeda, S. Miyake, Y. Nishiyama
20123 citations
Semantic Scholar
Approach to Extended Polycyclic Aromatic Hydrocarbons by Benzannulation and Intramolecular Cyclization; Improvement of the Reaction Conditions by Microwave Irradiation
R. Umeda, Raiki Nishikawa, Taketo Matsui, Kotaro Takase
2024Tetrahedron2 citations Open access
Semantic Scholar
Synthesis and Physical Properties of π-Extended Molecules Having p-Methylenequinone Unit
Y. Nishiyama, R. Umeda, Masamichi Nakatsukasa
2020Heterocycles1 citations Open access
Semantic Scholar
Synthesis of 4H-benz[de]anthracen-4-ones via 1,2-addition of metal acetylides to benzanthrone
R. Umeda, Teruaki Namba, Y. Shimizu, Y. Nishiyama
20161 citations
Semantic Scholar
Facile Synthesis of 3,3′-Disubstituted 2,2′-Binaphthyls by Transition-Metal-Catalyzed Double Benzannulation.
R. Umeda, Hiromasa Tabata, Y. Tobe, Y. Nishiyama
20151 citations
Semantic Scholar
SYNTHESIS OF ISOCOUMARINS : RHENIUM COMPLEX-CATALYZED CYCLIZATION OF 2-ETHYNYLBENZOIC ACIDS
Yutaka Nishiyama, R. Umeda, Shunya Yoshikawa, K. Yamashita
20151 citations Open access
Semantic Scholar
Selective Introducing of Aryl and Amino Groups: Reaction of Benzanthrone and Organometallic Reagents.
R. Umeda, Teruaki Namba, Tomohiro Yoshimura, Masamichi Nakatsukasa +1 more
20131 citations
Semantic Scholar
Rhenium Complex-Catalyzed Acylative Cleavage of Ethers with Acyl Chlorides.
R. Umeda, T. Nishimura, Kenta Kaiba, Toshimasa Tanaka +2 more
20121 citations
Semantic Scholar
Rhenium Complex as a Useful Catalyst for Acylative Cleavage of Ethers.
R. Umeda, Kenta Kaiba, Toshimasa Tanaka, Yuuki Takahashi +2 more
20111 citations
Semantic Scholar
Rhenium Complex as a UsefulCatalyst for Acylative Cleavage of Ethers
R. Umeda, Kenta Kaiba, Toshimasa Tanaka, Yuuki Takahashi +2 more
20101 citations
Semantic Scholar

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