書籍等出版物 Methods and Applications of Cycloaddition Reactions in Organic Syntheses, 175-204 John Wiley & Sons 2014 Author:Manabu ABE, Haruyasu ASAHARA, Ramil Y. BAIAZITOV, Scott BUR, Pauline CHIU, Steven D. R. CHRISTIE, Hervé CLAVIER, Jun DENG, Scott E. DENMARK, Francesco De SARLO, James DOUGLAS, Xu-Fei FU, Michael HARMATA, Richard P. HSUNG, Kennosuke ITOH, Darin E. JONES, Akio KAMIMURA, Chitoshi KITAMURA, Kensuke KIYOKAWA, Sarah Y. Y. LAM, Fabrizio MACHETTI, Satoshi MINAKATA, Louis C. MORRILL, *Nagatoshi NISHIWAKI, Albert PADWA, Hélène PELLISSIER, Edward RICHMOND, Andrew D. SMITH, Takahiro SOETA, Hiroyuki SUGA, Ryukichi TAKAGI, Kiyosei TAKASU, Youhei TAKEDA, Osamu TAMURA, Yutaka UKAJI, Hidemitsu UNO, Xiao-Na WANG, Hayley T. A. WATSON, Yosuke YAMAOKA, Zhi-Xiang YU
Visible-Light-Driven C-H Imidation of Arenes and Heteroarenes by a Phosphonium Ylide Organophotoredox Catalyst: Application to C-H Functionalization of Alkenes J. Org. Chem.,88(13):9574-9578 2023 Author:Yasunori Toda, Toya Kobayashi, Fumiya Hirai, Takamichi Yano, Makoto Oikawa, Kimiya Sukegawa, Masahiro Shimizu, Fuyuki Ito, Hiroyuki Suga
Ring-fused hexahydro-1,2,4,5-tetrazines: synthesis, structure, and mechanistic studies on isolable rotational isomers Chem. Commun.,59(6):700-703 2023 Author:Yasunori Toda, Airi Kooguchi, Kimiya Sukegawa, Ayaka Kikuchi, Hiroyuki Suga
Asymmetric Cycloadditions of Acyclic Carbonyl Ylides with Aldehydes Catalyzed by a Chiral Binaphthyldiimine-Ni(II) Complex: Enantioselective Synthesis of 1,3-Dioxolanes and Mechanistic Studies by DFT Calculations Org. Lett.,24(26):4739-4744 2022 Author:Yasunori Toda, Kayo Sato, Kensuke Sato, Kazuma Nagasaki, Hirotaka Nakajima, Ayaka Kikuchi, Kimiya Sukegawa, Hiroyuki Suga
Switchable synthesis of cyclic carbamates by carbon dioxide fixation at atmospheric pressure ROYAL SOC CHEMISTRY,57(54):6672-6675 2021 Author:Yasunori Toda, Minoru Shishido, Tatsuya Aoki, Kimiya Sukegawa, Hiroyuki Suga
Enantioselective Protonation of Cyclic Carbonyl Ylides by Chiral Lewis Acid Assisted Alcohols Chem. Eur. J.,27(41):10578-10582 2021 Author:Yasunori Toda, Takayuki Yoshida, Kaoru Arisue, Kazuaki Fukushima, Hiroyoshi Esaki, Ayaka Kikuchi, Hiroyuki Suga
A phosphonium ylide as a visible light organophotoredox catalyst: A mechanistic study Chem. Commun.,57(19):3591-3594 2021 Author:Yasunori Toda, Katsumi Tanaka, Riki Matsuda, Tomoyuki Sakamoto, Shiho Katsumi, Masahiro Shimizu, Fuyuki Ito, Hiroyuki Suga
Synthesis of 1,2,5-oxadiazinane derivatives by photochemical cycloaddition of nitrones with diaminomethanes ChemPhotoChem,4(6):388-392 2020 Author:Kennosuke Itoh, Atsushi Takashino, Atsushi Ohtsuka, Mizuki Kobe, Shunsuke Sawamura, Ryo Kato, Shigeto Hirayama, Fumika Karaki, Takaaki Mizuguchi, Noriko Sato, Ken Tokunaga, Yasunori Toda, Hiroyuki Suga, Hitoshi Ishida, Hideaki Fujii
A phosphonium ylide as a ligand for [3 + 2] coupling reactions of epoxides with heterocumulenes under mild conditions J. Org. Chem.,85(16):10980-10987 2020 Author:Yasunori Toda, Kousuke Hashimoto, Yoko Mori, Hiroyuki Suga
Methoxy groups increase reactivity of bifunctional tetraarylphosphonium salt catalysts for carbon dioxide fixation: A mechanistic study J. Org. Chem.,84(23):15578-15589 2019 Author:Yasunori Toda, Yutaka Komiyama, Hiroyoshi Esaki, Kazuaki Fukushima, Hiroyuki Suga
Visible-light-triggered catalytic halohydrin synthesis from epoxides and trichloroacetonitrile by copper and iron salts Chem. Lett.,48(12):1469-1471 2019 Author:Yasunori Toda, Katsumi Tanaka, Riki Matsuda, Hiroyuki Suga
4-Hydroxymethyl-substituted Oxazolidinone Synthesis by Tetraarylphosphonium salt-catalyzed Reactions of Glycidols with Isocyanates Chem. Commun.,55(41):5761-5764 2019 Author:Yasunori TODA, Shoya TANAKA, Shuto GOMYOU, Ayaka KIKUCHI, Hiroyuki SUGA
Use of Trichloroacetonitrile as a Hydrogen Chloride Generator for Ring-opening Reactions of Aziridines Org. Biomol. Chem.,17(15):3825-3829 2019 Author:Yasunori TODA, Riki MATSUDA, Shuto GOMYOU, Hiroyuki SUGA
Enantioselective Synthesis of 8-Azabicyclo[3.2.1]octanes via Asymmetric 1,3-Dipolar Cycloadditions of Cyclic Azomethine Ylides Using a Dual Catalytic System Chem. Commun.,55(11):1552-1555 2019 Author:Hiroyuki SUGA, Masahiro YOSHIWARA, Takaaki YAMAGUCHI, Takashi BANDO, Mizuki TAGUCHI, Ayano INABA, Yuichi GOTO, Ayaka KiKUCHI, Kennosuke ITOH, Yasunori TODA
Lewis Acid Catalysis in Intermolecular [2+2] Photocycloaddition of Coumarin-3-carboxamide Bearing 2-Oxazolidinone Auxiliary with n-Propyl Vinyl Ether and Vinyl Pivalate Heterocycles,97(1):591-603 2018 Author:Kennosuke ITOH, Junya MATSUURA, Hideaki KAMIYA, Ryuki KUDO, Yuki TAKAHASHI, Yuta HASHIMOTO, Kenji YOZA, Ken TOKUNAGA, Hideaki FUJII, Hiroyuki SUGA
Enantioselective Cycloadditions between Aliphatic Nitrile Oxides and 2-Hydroxystyrenes Catalyzed by Chiral Amine-urea Heterocycles,97(1):147-150 2018 Author:Yasunori TODA, Masato KOYAMA, Hiroyoshi ESAKI, Kazuaki FUKUSHIMA, Hiroyuki SUGA
Triethylamine Enables Catalytic Generation of Oxidopyrylium Ylides for [5+2] Cycloadditions with Alkenes: An Efficient Entry to 8-Oxabicyclo[3.2.1]octane Frameworks Adv. Synth. Catal.,360(12):2377-2381 2018 Author:Yasunori TODA, Masahiro SHIMIZU, Taichi IWAI, Hiroyuki SUGA
Three-Component Reactions of Diazoesters, Aldehydes, and Imines Using a Dual Catalytic System Consisting of a Rhodium(II) Complex and a Lewis Acid Org. Lett.,20(9):2659-2662 2018 Author:Yasunori TODA, Wakatake KAKU, Makoto TSURUOKA, Sho SHINOGAKI, Tomoka ABE, Hideaki KAMIYA, Ayaka KIKUCHI, Kennosuke ITOH, Hiroyuki SUGA
Efficient Generation of an Oxidopyrylium Ylide Using a Pd Catalyst and Its [5+2] Cycloadditions with Several Dipolarophiles Chem. Commun.,54(9):1109-1112 2018 Author:Hiroyuki Suga, Taichi Iwai, Masahiro Shimizu, Kie Takahashi, Yasunori Toda
Tetraarylphosphonium Salt-Catalyzed Synthesis of Oxazolidinones from Isocyanates and Epoxides Org. Lett.,19(21):5786-5789 2017 Author:Yasunori Toda, Shuto Gomyou, Shoya Tanaka, Yutaka Komiyama, Ayaka Kikuchi, Hiroyuki Suga
A Phosphonium Ylide as an Ionic Nucleophilic Catalyst for Primary Hydroxyl Group Selective Acylation of Diols ACS Catal.,7(9):6150-6154 2017 Author:Yasunori Toda, Tomoyuki Sakamoto, Yutaka Komiyama, Ayaka Kikuchi, Hiroyuki Suga
Amine‐Urea‐Mediated Asymmetric Cycloadditions between Nitrile Oxides and o‐Hydroxystyrenes by Dual Activation Angew. Chem. Int. Ed.,56(39):11936-11939 2017 Author:Hiroyuki Suga, Yohei Hashimoto, Yasunori Toda, Kazuaki Fukushima, Hiroyoshi Esaki, Ayaka Kikuchi
Tetraarylphosphonium Salt-Catalyzed Carbon Dioxide Fixation at Atmospheric Pressure for the Synthesis of Cyclic Carbonates ACS Catalysis,6(10):6906-6910 2016 Author:Yasunori Toda, Yutaka Komiyama, Ayaka Kikuchi, and Hiroyuki Suga
Photochemically-induced C–C Bond Formation between Tertiary Amines and Nitrones Org. Biomol. Chem.,13(33):8919-8924 2015 Author:Kennosuke ITOH, Ryo KATO, Daito KINUGAWA, Hideaki KAMIYA, Ryuki KUDO, Masayuki HASEGAWA, Hideaki FUJIIA, Hiroyuki SUGA
Chiral Lewis Acid-Catalyzed Enantioselective Cycloadditions between Indoles and Cyclic Carbonyl Ylides Derived from Diazodiketone or Diazoketoester Derivatives J. Org. Chem.,80(13):6687-6696 2015 Author:Hiroyuki SUGA, Yurie SEKIKAWA, Shunta MISAWA, Daito KINUGAWA, Rinnosuke ODA, Kennosuke ITOH, Yasunori TODA, Ryotaro KIYONO
Chiral Lewis Acid Catalyzed Asymmetric Cycloadditions of Carbonyl Ylides Generated from Diazoimide Derivatives and their Synthetic Applications to Indolizidine Alkaloids J. Org. Chem.,78(21):10840-10852 2013 Author:Hiroyuki SUGA, Yuta HASHIMOTO, Shingo YASUMURA, Ryota TAKEZAWA
Diastereoselective Synthesis of Tetrahydrofurans by Lewis Acid Catalyzed Intermolecular Carbenoid−Carbonyl Reaction−Cycloaddition Sequences: Unusual Diastereoselectivity of Lewis Acid Catalyzed Cycloadditions J. Org. Chem.,78(12):6182-6195 2013 Author:Yuta HASHIMOTO, Kennosuke ITOH, Akikazu KAKEHI, Motoo SHIRO, Hiroyuki SUGA
Novel Rearrangements of a 8aH-Pyrido[1,2-d]thieno[2’,3’-b][1,4]thiazepine Derivative Heterocycles,85(2):305-312 2012 Author:Akikazu KAKEHI, Kennosuke ITOH, Hiroyuki SUGA, Yuuki OHKUBO, Ayaka KOBAYASHI, Takashi NISHI
Molecular Recognition of 2-(Arylmethylthio)indolizine Derivatives Through an Intramolecular Aene-(cation) Interaction Heterocycles,84(2):753-764 2012 Author:Akikazu KAKEHI, Kennosuke ITOH, Hiroyuki SUGA, Nobuhiro YAMAGUCHI, Takashi ABE, Yohei YUDA, Haruka KATSUMATA
Asymmetric Cycloaddition Reactions of Diazoesters with 2-Alkenoic Acid Derivatives Catalyzed by Binaphthyldiimine Ni(II) complexes J. Org. Chem.,76(18):7377–7387 2011 Author:Hiroyuki SUGA, Yasuhisa FURIHATA, Atsushi SAKAMOTO, Kennosuke ITOH, Yukihisa OKUMURA, Teruko TSUCHIDA, Akikazu KAKEHI, Toshihide BABA
A New Synthetic Approch to Some Functionalized Cyclo[3.2.2]azine Derivatives Heterocycles,82(2):1251-1266 2011 Author:Hideyuki MURANAKA, Akikazu KAKEHI, Hiroyuki SUGA, Kennosuke Itoh
Synthesis of Spiro[2-cyclopentene-1,3’-imidazo[1,2-a]pyridine] Derivatives and Their Interesting Behavior in 1H-NMR Spectra in Deuteriochloroform HETEROCYCLES,81(9):2075-2086 2010(Sep.) Author:Abe, T.; Kakehi, A.; Suga, H.; Okumura, Y.; Itoh, K.
Asymmetric 1,3-Dipolar Cycloaddition Reactions of Azomethine Imines with Acrolein Catalyzed by L-Proline and Its Derivatives Heterocycles,81(7):1669-1688 2010(Jul.) Author:Hiroyuki SUGA, Tadashi ARIKAWA, Kennosuke ITOH, Yukihisa OKUMURA, Akikazu KAKEHI, Motoo SHIRO
Inverse electron demand asymmetric cycloadditions of cyclic carbonyl ylides catalyzed by chiral Lewis acids-Scope and limitations of diazo and olefinic substrates TETRAHEDRON,66(16):3070-3089 2010(Apr.) Author:Suga, H; Higuchi, S; Ohtsuka, M; Ishimoto, D; Arikawa, T; Hashimoto, Y; Misawa, S; Tsuchida, T; Kakehi, A; Baba, T
PREPARATION OF NEW NITROGEN-BRIDGED HETEROCYCLES. 68. ONE-POT SYNTHSIS OF 4-SUBSTITUTED 5-ACYLTHIENO[3,2-d]THIAZOLE DERIVATIVES HETEROCYCLES,81(1):175-184 2010(Jan.) Author:Kakehi, A; Suga, H; Okumura, Y; Nishi, T
A New Approach to Imidazo[1,2-a]pyridine Derivatives and Their Application to the Syntheses of Novel 2H-Pyrano[2’,3’:4,5]imidazo[1,2-a]pyridin-2-one Derivatives HETEROCYCLES,80(1):439-454 2010(Jan.) Author:Abe, T.; Okumura, Y.; Suga, H.; Kakehi, A.
Preparation of new nitrogen-bridged heterocycles. 72. A New Approach to 1-Acyl-3-(substituted methylthio)thieno[3',4':4,5]imidazo[1,5-a]pyridine Derivatives Chem. Pharm. Bull.,58(11):1502-1510 2010 Author:Akikazu KAKEHI, Hiroyuki SUGA, Yukihisa OKUMURA, Kennosuke ITOH, Kouji KOBAYASHI, Yoshihiro AIKAWA, Kotaro MISAWA
Preparation of New Nitrogen-bridged Heterocycles 67. Syntheses of ,’-Bis[(thieno[3,4-b]indolizin-3yl)]-o-, m-, and p-xylene Derivatives and Their Conformational Structures Chem. Pharm. Bull.,57(12):1385-1390 2009 Author:Akikazu KAKEHI, Hiroyuki SUGA, Yukihisa OKUMURA, Masatoshi SHINOHARA, Tomonao KAKO, Takeshi SEKIGUCHI, Motoo SHIRO
First Formation of Thiepino[2,3-b]- and Thiepino[3,2-a]indolizine Derivatives Heterocycles,78(2):319-324 2009 Author:Hidetoshi ISAWA, Hiroyuki SUGA, Akikazu KAKEHI
Preparation of New Nitrogen-bridged Heterocycles 64. A Smooth Formation of 2,4-Diarylpyrido[2,3-b]indolizine-10-carbonitrile Derivatives Heterocycles,77(1):471-481 2009 Author:Akikazu KAKEHI, Hiroyuki SUGA, Shuichi SATO
Asymmetric 1,3-Dipolar Cycloaddition Reactions of Nitrile Oxides Catalyzed by Chiral Binaphthyldiimine-Ni(II) Complexes J. Org. Chem.,74(3):1099-1113 2009 Author:Hiroyuki SUGA, Yuki ADACHI, Kouhei FUJIMOTO, Yasuhisa FURIHATA, Teruko TSUCHIDA, Akikazu KAKEHI, Toshihide BABA
Preparation of New Nitrogen-bridged Heterocycles 63. Unexpected Formation of Thieno[3’,4’:4,5]imidazo[1,2-a]pyridines Heterocycles,76(1):391-399 2008 Author:Akikazu KAKEHI, Hiroyuki SUGA, Atsushi Izumida, Takashi Abe
Reaction of Potassium Pyrazolo[1,5-a]pyridine-2-thiolates with Electron-poor Alkynes Hetreocyclic Commun.,14(3):141-148 2008 Author:Hidetoshi ISAWA, Akikazu KAKEHI, Hiroyuki SUGA
Lewis Acid-Catalyzed Michael Addition Reactions of N-Boc-2-silyloxypyrroles to 3-Acryloyl-2-oxazolidinone Heterocycles,71(2):361-371 2007(Jan.) Author:Suga H., Takemoto H, Kakehi A.
First ring contraction-desulfurization of 1-(arylcarbonyl)pyrido[2,1-c]-1,4-thiazines to 1-(arylcarbonyl)indolizines and its application to 3-arylthieno[3,2-a]indolizine synthesis Heterocycles,74:521-532 2007 Author:Akikazu KAKEHI, Hiroyuki SUGA, Yuichi GOTO, Nobuhiro YAMAGUCHI
Preparation of New Nitrogen-bridged Heterocycles 59. Syntheses and Intramolecular Interactions of 3-(Acylmethylthio)- and 3-[(3-Ethoxycarbonyl-2-propenyl)thio]thieno[3,4-b]indolizine Derivatives Chem. Pharm. Bull.,55(1):95-101 2007 Author:Akikazu KAKEHI, Hiroyuki SUGA, Hirohide, ISOGAI
Dipole-LUMO/Dipolarophile-HOMO Controlled Asymmetric Cycloadditions of Carbonyl Ylides Catalyzed by Chiral Lewis Acids Org. Lett.,9(21):4359-4362 2007 Author:Hiroyuki SUGA, Daisuke ISHIMOTO, Satoshi HIGUCHI, Motoo OHTSUKA
Highly Enantioselective and Diastereoselective 1,3-Dipolar Cycloaddition Reactions between Azomethine Imines and 3-Acryloyl-2-oxazolidinone Catalyzed by Binaphthyldiimine-Ni(II) Complexes Org. Lett.,9(1):97-100 2007 Author:Hiroyuki SUGA, Akira FUNYU, Akikazu KAKEHI
Asymmetric cycloaddition reactions between 2-benzopyrylium-4-olates and 3-(2-alkenoyl)-2-oxazolidinones in the presence of 2,6-bis(oxazolinyl)pyridine-lanthanoid complexes Tetrahedron,62(39):9218-9225 2006(Sep.) Author:Suga H., Suzuki T., Inoue K., Kakehi A.
Chiral 2,6-bis (oxazolinyl)pyridine-rare earth metal complexes as catalysts for highly enantioselective 1,3-dipolar cycloaddition reactions of 2-benzopyrylium-4-olates JOURNAL OF ORGANIC CHEMISTRY,70(1):47-56 2005 Author:Suga, H; Inoue, K; Inoue, S; Kakehi, A; Shiro, M
Highly exo-selective and enantioselective cycloaddition reactions of nitrones catalyzed by a chiral binaphthyidiimine-Ni(II) complex ORGANIC LETTERS,7(7):1431-1434 2005 Author:Suga, H; Nakajima, T; Itoh, K; Kakehi, A
Syntheses of some 1-(alpha-hydroxybenzyl)thieno[3,4-b]indolizine derivatives and their unexpected condensation reactions HETEROCYCLES,65(7):1557-1560 2005 Author:Kakehi, A; Suga, H; Hatayama, S; Kubo, D
Preparation of new nitrogen-bridged heterocycles. 58. - Syntheses and intramolecular arene-pi interactions of 3-(allylthio)- and 3-(propargylthio)thieno[3,4-b]indolizine derivatives CHEMICAL & PHARMACEUTICAL BULLETIN,53(11):1430-1438 2005 Author:Kakehi, A; Suga, H; Kaneko, Y; Fujii, T; Tanaka, N
Efficient catalytic effects of Lewis acids in the 1,3-dipolar cycloaddition reactions of carbonyl ylides with imines JOURNAL OF ORGANIC CHEMISTRY,70(26):10782-10791 2005 Author:Suga, H; Ebiura, Y; Fukushima, K; Kakehi, A; Baba, T
Chiral 2,2’-Binaphthyldiimine-nickel(II) Complexes as Lewis Acid Catalysts for Enantioselective Diels-Alder Reactions Bull. Chem. Soc. Jpn.,77(3):561-568 2004(Mar.) Author:Hiroyuki SUGA, Akikazu KAKEHI, Masashi MITSUDA
Preparation of new nitrogen-bridged heterocycles. 55. Reinvestigation of the bromination/dehydrobromination of ethyl 3-[2-(methylthio)indolizin-3-yl]acrylate derivatives CHEMICAL & PHARMACEUTICAL BULLETIN,52(2):279-281 2004 Author:Kakehi, A; Ito, S; Suga, H; Kobayashi, Y; Zuo, P; Iriye, R
Asymmetric Michael addition reactions of 2-silyloxyfurans catalyzed by binaphthyldiimine-Ni(II) complexes CHEMICAL COMMUNICATIONS,(12):1414-1415 2004 Author:Suga, H; Kitamura, T; Kakehi, A; Baba, T
Preparation of new nitrogen-bridged heterocycles. 56. Syntheses and reactions of 1-[2,2-bis(alkylthio)-1-(ethoxycarbonylacetyl)vinyl]pyridinium salts CHEMICAL & PHARMACEUTICAL BULLETIN,52(11):1316-1321 2004 Author:Kakehi, A; Suga, H; Yamauchi, Y; Yasuraoka, K; Kobayashi, T; Ohta, A
Stereoselectivity in 1,3-Dipolar Cycloaddtion Reactions of 2-Benzopyrylium-4-olate with Acrylic Acid Derivatives Catalyzed by Rare Earth Metal Triflate Synthesis,2003(9):1413-1418 2003(Sep.) Author:Kei INOUE, Hiroyuki SUGA, Shuichi INOUE, Hiroki SATO, Akikazu KAKEHI
Enantio- and Diastereoselectivity in 1,3-Dipolar Cycloaddition Reactions of Nitrones with 3-Crotonoyl-2-oxazolidinone Catalyzed by Ni(II)-Binaphthyldiimine Complexes Bull. Chem. Soc. Jpn.,76(2):327-334 2003(Feb.) Author:Hiroyuki SUGA, Akikazu KAKEHI, Suketaka ITO, and Hiroaki SUGIMOTO
Asymmetric Cyclopropanation and Aziridination Reactions of Olefins Catalyzed by Cu(I)-Binaphthyldiimine Complexes Bull. Chem. Soc. Jpn.,76(1):189-199 2003(Jan.) Author:Hiroyuki SUGA, Akikazu KAKEHI, Suketaka ITO, Toshikazu IBATA, Tomomi FUDO, Yuzuru WATANABE, Yoshinori KINOSHITA
Preparation of new nitrogen-bridged heterocycles. 53. Syntheses of 3-(benzylthio)thieno[3,4-b]indolizine derivatives and their intramolecular arene-arene interactions CHEMICAL & PHARMACEUTICAL BULLETIN,51(1):75-84 2003 Author:Kakehi, A; Ito, S; Suga, H; Miwa, T; Mori, T; Fujii, T; Tanaka, N; Kobayashi, T
Preparation of new nitrogen-bridged heterocycles. 54. Increased arene-arene interactions of 3-(bicyclic and tricyclic arylmethylthio)thieno[3,4-b]indolizine derivatives CHEMICAL & PHARMACEUTICAL BULLETIN,51(11):1246-1252 2003 Author:Kakehi, A; Suga, H; Kako, T; Fujii, T; Tanaka, N; Kobayashi, T
A through-space interaction of 3-benzylthiothieno[3,4-b]indolizine derivatives combined by a highly flexible spacer HETEROCYCLES,57(1):17-20 2002 Author:Kakehi, A; Ito, S; Suga, H; Miwa, T; Mori, T; Kobayashi, T
Highly Enantioselective 1,3-Dipolar Cycloaddition Reactions of 2-Benzopyrylium-4-olate Catalyzed by Chiral Lewis Acids J. Am. Chem. Soc,124(50):14836-14837 2002 Author:Hiroyuki SUGA, Kei INOUE, Shuichi INOUE, Akikazu KAKEHI
Preparation of new nitrogen-bridged heterocycles. 50. Syntheses of some heterocyclic compounds starting from pyridinium 1-(ethoxycarbonylacetyl)methylides HETEROCYCLES,54(1):185-200 2001 Author:Kakehi, A; Ito, S; Suga, H; Yasuraoka, K
Stereocontrol in a ytterbium triflate-catalyzed 1,3-dipolar cycloaddition reaction of carbonyl ylide with N-substituted maleimides and dimethyl fumarate BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN,74(6):1115-1121 2001 Author:Suga, H; Kakehi, A; Ito, S; Inoue, K; Ishida, H; Ibata, T
Preparation of new nitrogen-bridged heterocycles. 51. Syntheses and structures of compounds having two indolizine nuclei in a molecule CHEMICAL & PHARMACEUTICAL BULLETIN,49(11):1401-1405 2001 Author:Kakehi, A; Ito, S; Suga, H; Sakurai, S; Kobayashi, T
Conformation of Polychloronitrophenyl N-Substituted Morpholines Studied by DNMR and X-Ray Crystal Structure J. Chem. Research (S),:265 2001 Author:Xinzhou ZOU, Hiro KUMA, Toshikazu IBATA, Hiroyuki SUGA
Regioselectivity in Formal [3 + 2] Cycloaddition Reaction of 5-Alkoxyoxazoles with Diethyl Oxomalonate and 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone Heterocycles,55(9):1711-1725 2001 Author:Hiroyuki SUGA, Xiaolan SHI, Toahikazu IBATA, Akikazu KAKEHI
Preparation of new nitrogen-bridged heterocycles. 47. Reactions of 2-indolizinethiolates with acetylenic compounds HETEROCYCLES,52(1):215-226 2000 Author:Kakehi, A; Ito, S; Suga, H; Takahashi, H; Dobashi, K
Stereocontrol in rare earth metal triflate-catalyzed 1,3-dipolar cycloaddition reaction of 2-benzopyrylium-4-olate with aldehydes ORGANIC LETTERS,2(20):3145-3148 2000 Author:Suga, H; Kakehi, A; Ito, S; Inoue, K; Ishida, H; Ibata, T
Cis and enantioselective synthesis of 2-oxazoline-4-carboxylates through Lewis acid-catalyzed formal [3+2] cycloaddition of 5-alkoxyoxazoles with aldehydes JOURNAL OF ORGANIC CHEMISTRY,64(19):7040-7047 1999 Author:Suga, H; Ikai, K; Ibata, T
Lewis acid catalyzed formal [3+2] cycloaddition of 5-alkoxyoxazoles and thiiazoles REVIEWS ON HETEROATOM CHEMISTRY,21:195-221 1999 Author:Suga, H; Ibata, T
Enantioselective Synthesis of cis-2-Oxazoline-4-carboxylates by Lewis Acid Catalyzed Formal [3 + 2] Cycloaddition of 5-Alkoxyoxazoles with Aldehydes Tetrahedron Lett.,39(8):869-872 1998 Author:Hiroyuki SUGA, Kosei IKAI, Toshikazu IBATA
Total Synthesis of (±)-Quinolizidine 217A J. Org. Chem.,64(19):7040-7047 1998 Author:William H. PEARSON, Hiroyuki SUGA
Stereocontrol of metal-catalyzed cycloaddition of carbonyl ylide with N-substituted maleimide TETRAHEDRON LETTERS,39(20):3165-3166 1998 Author:Suga, H; Ishida, H; Ibata, T
Synthesis of 2,5-dihydro-1,2,4-oxadiazoles through formal [3+2] cycloaddition of oxazoles with nitrosobenzene derivatives BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN,71(5):1231-1236 1998 Author:Suga, H; Shi, XL; Ibata, T
Cu(I)-binaphthyldiimine catalyzed asymmetric cyclopropanation of olefin with diazoacetate SYNLETT,(8):933-935 1998 Author:Suga, H; Fudo, T; Ibata, T
Preparation of new nitrogen-bridged heterocycles. 45. Smooth hydrolysis of 6-membered heterocyclic 2-imines with partial aromaticity CHEMICAL & PHARMACEUTICAL BULLETIN,46(10):1632-1634 1998 Author:Kakehi, A; Ito, S; Suga, H; Takano, S; Hirata, K
Preparation of new nitrogen-bridged heterocycles. 46. Selective formation of 4(1H)-8,8a-dihydro-1,4-thiazino[3,4,5-cd]indolizinone and (E)-3-(1,3-oxathiol-2-ylidene)-2(3H)-indolizinone derivatives CHEMICAL & PHARMACEUTICAL BULLETIN,46(12):1866-1871 1998 Author:Kakehi, A; Ito, S; Suga, H; Kobayashi, T; Hatanaka, S
Regio-Selectivity and Relative Reactivity of Ylide Formation in the Reaction of Ketocarbenoid with Hetero-Cumulenes Heterocyclic Commun.,2(1):87-90 1996 Author:Toshikazu IBATA, Motomu HIMORI, Kazuaki FUKUSHIMA, Hiroyuki SUGA, Hirofumi NAKANO
Highly Diastereoselective Synthesis of 2-Oxazoline-4-carboxylates by Formal [3 + 2] Cycloadditions of a 5-Alkoxyoxazole with -Alkoxyaldehydes Catalyzed by Tin(IV) Chloride J. Org. Chem.,59(12):3359-3364 1994 Author:Hiroyuki SUGA, Hiroki FUJIEDA, Yoshihiro HIROTSU, Toshikazu IBATA
Regio-Control of Formal [3 + 2] Cycloadditions of 5-Alkoxyoxazoles with Diethyl Oxomalonate Chem. Lett.,(9):1673-1676 1994 Author:Hiroyuki SUGA, Xiaolan SHI, Toshikazu IBATA
Stereoselective Synthesis of 2-Oxazoline-4-carboxylates through Lewis Acid-Catalyzed Formal [3 + 2] Cycloadditions of 5-Alkoxyoxazoles with Aldehydes J. Org. Chem.,58(26):7397-7405 1993 Author:Hiroyuki SUGA, Xiaolan SHI, Toshikazu IBATA
Abnormal Diels-Alder Reaction of 5-Alkoxyoxazoles with Tetracyanoethylene and X-Ray Crystal Structure of an Adduct Bull. Chem. Soc. Jpn.,65(11):1771-1778 1992 Author:Toshikazu IBATA, Yasushi ISOGAMI, Hiroyuki NAKAWA, Hatsue TAMURA, Hiroyuki SUGA, Xiaolan SHI, Hiroki FUJIEDA
Abnormal Diels-Alder Reaction of Oxazoles with 4-Phenyl-3H-1,2,4-triazole-3,5(4H)-dione and Diethyl Azodicarboxylate, and X-Ray Crystal Structure of an Adduct Bull. Chem. Soc. Jpn.,65(11):2998-3007 1992 Author:Toshikazu IBATA, Hiroyuki SUGA, Yasushi ISOGAMI, Hatsue TAMURA, Xiaolan SHI
Abnormal Diels-Alder Reaction of 5-Alkoxythiazoles with Highly Reactive Dienophiles; 4-Phenyl-3H-1,2,4-triazole-3,5(4H)-dione, Diethyl Azodicarboxylate, and Diethyl Oxomalonate Bull. Chem. Soc. Jpn.,65(12):3315-3321 1992 Author:Xiaolan SHI, Toshikazu IBATA, Hiroyuki SUGA, Kiyoshi MATSUMOTO
Reaction of Oxazoles with Nitrosobenzene. A Route to 1,2,4-Oxadiazolines Chem. Lett.,(7):1221-1224 1991 Author:Hiroyuki SUGA, Toshikazu IBATA
Reactions of 5-Alkoxyoxazoles with Aldehydes in the Presence of Lewis Acid: Regio- and Stereoselective Formation of 4-Alkoxycarbonyl-2-oxazolines Tetrahedron Lett.,32(47):6911-6914 1991 Author:Hiroyuki SUGA, Xiaolan SHI, Hiroki FUJIEDA, Toshikazu IBATA
Synthesis of 4-[(E)-1-Alkenyl]-2-hydroxybutanolides and (Z)-4-Alkylidene-2-butenolides through Cycloadditions Using a Phosphorus-Functionalized Nitrile Oxide Bull. Chem. Soc. Jpn.,62(1):171-179 1989 Author:Shuji KANEMASA, Norihiko NAKAGAWA, Hiroyuki SUGA, Otohiko TSUGE
Acid-Catalyzed Transformation of -Hydroxy--oxo Acetals to -Oxo Esters. A Novel Deconjugation of 4-Oxo-2-alkenal Acetals Bull. Chem. Soc. Jpn.,62(1):180-184 1989 Author:Shuji KANEMASA, Norihiko NAKAGAWA, Hiroyuki SUGA, Otohiko TSUGE
Synthesis of 2-(1-Phosphorylalkyl)- and 2-(1-Alkenyl)furans through Nitrile Oxide Cycloaddition Route Bull. Chem. Soc. Jpn.,61(6):2133-2146 1988 Author:Otohiko TSUGE, Shuji KANEMASA, Hiroyuki SUGA
An Entry to 5-(1-Alkenyl)-3(2H)-furanones through Cycloaddition of Phosphorus-Functionalized Nitrile Oxide to Acetylene Alcohols. An Effective Synthesis of Geiparvarin Chem. Lett.,(2):323-326 1987 Author:Otohiko TSUGE, Shuji KANEMASA, Hiroyuki SUGA
Synthesis of (Diethoxyphosphoryl)acetonitrile Oxide and Its Cycloaddition to Olefins. Synthetic Applications to 3,5-Disubstituted 2-Isoxazolines Bull. Chem. Soc. Jpn.,60(7):2463-2473 1987 Author:Otohiko TSUGE, Shuji KANEMASA, Hiroyuki SUGA, Norihiko NAKAGAWA
Horner-Emmons Olefination of 4-Hydroxy-2-oxoalkylphosphonates and Related Compounds: Applications to the Syntheses of (±)-Gingerol, (±)-Yashabushiketol, and (±)-Dihydroyashabushiketol Bull. Chem. Soc. Jpn.,60(11):4091-4098 1987 Author:Otohiko TSUGE, Shuji KANEMASA, Norihiko NAKAGAWA, Hiroyuki SUGA
Synthesis of a New Phosphorus-Functionalized Nitrile Oxide, -(Diethylphosphono)acetonitrile Oxide, and Cycloaddition Leading to 3-(Diethylphosphonomethyl)-2-isoxazolines Chem. Lett.,(2):183-186 1986 Author:Otohiko TSUGE, Shuji KANEMASA, Hiroyuki SUGA
A Novel Ring-Opening Reaction of Aziridine Induced by the Formation of Nitrogen-Substituted Carbanion of Nonstabilized Type Heterocycles,22(9):1955-1958 1984 Author:Otohiko TSUGE, Shuji KANEMASA, Hiroyuki SUGA, Koyo MATSUDA
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