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Papers(2000-)
2007
Trifluoromethanesulfonate (triflate) as a moderately coordinating anion: Studies from chemistry of the cationic coordinatively unsaturated mono- and diruthenium amidinates Hayashida, T; Kondo, H; Terasawa, J; Kirchner, K; Sunada, Y; Nagashima, H Journal of Organometallic Chemistry 2007, 692, 382-394
2006
Titanium(IV) phosphinoamide as a unique bidentate ligand for late transition metals II: TiRu heterobimetallics bearing a bridging chlorine atom. Sunada, Y; Sue, T; Matsumoto, T.; Nagashima, H Journal of Organometallic Chemistry 2006, 691, 3176-3182 Dynamic Titanium Phosphinoamides as Unique Bidentate Phosphorus Ligands for Platinum Nagashima, H; Sue, T; Oda, T; Kanemitsu, A; Matsumoto, T; Motoyama, Y; Sunada, Y Organometallics 2006, 25, 1987-1994 A coordinatively unsaturated ruthenium methoxide as a highly effective catalyst for the halogen atom-transfer radical cyclization of N-allyl dichloroacetamides and related reactions Motoyama, Y; Hanada, S; Shimamoto, K; Nagashima, H Tetrahedron 2006, 62(12), 2779-2788 Dual Si-H effects in platinum-catalyzed silane reduction of carboxamides leading to a practical synthetic process of tertiary amines involving self-encapsulation of the catalyst species into the insoluble silicone resin formed Hanada, S; Motoyama, Y; Nagashima, H Tetrahedron Letters 2006, 47(35), 6173-6177 Highly-dispersed and size-controlled ruthenium nanoparticles on carbon nanofibers: preparation, characterization, and catalysis. Motoyama, Y; Takasaki, M; Higashi, K; Yoon, S. -H; Mochida, I; Nagashima, H Chemistry Letters 2006, 35(8), 876-877
2005
Atom-transfer radical reactions catalyzed by a coordinatively unsaturated diruthenium amidinate, [(η5-C5Me5)Ru(η2-i-PrNC(Me)Ni-Pr)Ru(η5-C5Me5)]+. Motoyama, Y.; Hanada, S.; Niibayashi, S.; Shimamoto, K.; Takaoka, N.; Nagashima, H Tetrahedron 2005, 61, 10216-10226 Self-Encapsulation of Homogeneous Catalyst Species into Polymer Gel Leading to a Facile and Efficient Separation System of Amine Products in the Ru-Catalyzed Reduction of Carboxamides with Polymethylhydrosiloxane (PMHS). Motoyama, Y.; Mitsui, K.; Ishida, T.; Nagashima, H. J. Am. Chem. Soc.2005, 127, 13150-13151 Crystal Structures of n-Alkanes with Branches of Different Size in the Middle Ikedou, K.; Yamamoto, Y.; Nagashima, H.; Nemoto, N. J. Phys. Chem. B 2005, 109, 10668-10675. “Unsymmetrical” Diruthenium Amidinates, in which the μ2-Amidinate Bridge is Perpendicular to the Ru-Ru Axis: Synthesis and Reactions of Derivatives of [(η5-C5Me5)Ru(m-amidinate)Ruη5-C5H5)]+ Terasawa,J.; Kondo,H.; Matsumoto,T.; Kirchner,K.; Motoyama,Y.; Nagashima,H Organometallics 2005, 24, 2713-2721 Monometallic and heterobimetallic azanickellacycles as ethylene polymerization catalysts Tanabiki, M.; Tsuchiya, K.; Motoyama, Y.; Nagashima, H. Chemical Communications 2005, 3409-3411. ルテニウムカルボニルクラスターを触媒として用いたヒドロシリル化反応を基軸とする高活性触媒反応 松原公紀、永島英夫 有機合成化学協会誌、 2005 Vol. 63, pp. 122-133 The Effect of Titanium Alkoxides in the Synthesis of Heterobimetallic Complexes by Titanocene(III) Alkoxide-Induced Metal-Metal Bond Cleavage of Metal Carbonyl Dimers Niibayashi,S.; Mitsui,K.; Motoyama,Y.; Nagashima,H. Journal of Organometallic Chemistry 2005, 690, 276-285.
2004
Silane-Induced Polymerization of Vinyl Ethers Catalyzed by a Triruthenium Carbonyl Cluster, (μ3-, η2-, η3-, η5--Acenaphthylene)Ru3(CO)7 Nagashima,H.; Itonaga,C.; Yasuhara,J.; Motoyama,Y.; Matsubara.K Organometallics 2004, 23, 5779-5786. Ni(II) Isocyanide Complexes as Ethylene Polymerization Catalysts. Tanabiki,M.; Tsuchiya,K.; Kumanomido,Y.; Matsubara,K.; Motoyama,Y.; Nagashima,H. Organometallics 2004, 23, 3976-3981. A Cationic Diruthenium Amidinate, [(η5-C5Me5)Ru(μ2-i-PrN=C(Me)Ni-Pr)Ru(η5-C5Me5)]+, as an Efficient Catalyst for the Atom-Transfer Radical Reactions. Motoyama, Y.; Gondo, M.; Masuda, S.; Iwashita, Y.; Nagashima, H. Chemistry Letters 2004, 33, 442-443. Thermally Reversible Photochemical Haptotropic Rearrangement of Diiron Carbonyl Complexes Bearing a Bridging Acenaphthylene or Aceanthrylene Ligand. Niibayashi, S.; Matsubara, K.; Haga, M.; Nagashima, H. Organometallics 2004, 23, 635-646.
2003
Novel Titanium-Cobalt Complexes Formed by Reductive Cleavage of a Co-Co Bond in Co2(CO)8 by Titanocene tert-Butoxides: Synthesis, Characterization, and Mechanistic Aspects for Metal-Metal Bond Recombination.
Niibayashi, S.; Mitsui, K.; Matsubara, K.; Nagashima, H. Organometallics 2003, 22, 4885-4892. Thermally or Photochemically Induced Reductive Cleavage of Metal-Metal Bonds of Metal Carbonyl Dimers by a Titanocene(III) tert-Butoxide: Novel Reversible Access to Heterobimetallic Complexes. Matsubara, K.; Niibayashi, S.; Nagashima, H. Organometallics 2003, 22, 1376-1382. Organoruthenium(II) and (III) Amidinates, (η5-C5Me5)Ru(η-amidinate) and (η5-C5Me5)RuCl(η-amidinate), as Unique Redox Catalysts for the Intramolecular Kharasch Reactions: Facile Access to a Pyrrolizidine Alkaloid Skeleton under Mild Conditions. Nagashima, H.; Gondo, M.; Masuda, S.; Kondo, H.; Yamaguchi, Y.; Matsubara, K. Chemical Communications 2003, 442-443.
2002
Silane-Induced Ring-Opening Polymerization of 1,1,3,3-Tetramethyl-2-Oxa-1,3-Disilacyclopentane Catalyzed by a Triruthenium Cluster. Matsubara, K.; Terasawa, J.-I.; Nagashima, H. Journal of Organometallic Chemistry 2002, 660, 145-152. Access to Novel Ruthenium-Amidinate Complexes, (η6-arene)Ru(η2-amidinate)X and [Ru(η2-amidinate)(MeCN)4]+PF6- by Photochemical Displacement of the Benzene Ligand in (η6-C6H6)Ru(η2-amidinate)X. Hayashida, T.; Nagashima, H. Organometallics 2002, 21, 3884-3888. Oxidative Addition of H-SiR3 to Di- and Triruthenium Carbonyl Complexes Bearing a Bridging Azulene Ligand: Isolation of New Silylruthenium Complexes and Catalytic Hydrosilylation of Ketones. Matsubara, K.; Ryu, K.; Maki, T.; Iura, T.; Nagashima, H. Organometallics 2002, 21, 3023-3032. A Triruthenium Carbonyl Cluster Bearing a Bridging Acenaphthylene Ligand: An Efficient Catalyst for Reduction of Esters, Carboxylic Acids, and Amides by Trialkylsilanes. Matsubara, K.; Iura, T.; Maki, T.; Nagashima, H. Journal of Organic Chemistry 2002, 67, 4985-4988. Preparation, Structures, and Haptotropic Rearrangement of Novel Dinuclear Ruthenium Complexes, (μ2,η3:η5-guaiazulene)Ru2(CO)4(CNR). Matsubara, K.; Mima, S.; Oda, T.; Nagashima, H. Journal of Organometallic Chemistry 2002, 650, 96-107. "Bidentate" and "Tridentate" Sulfonamide Ligands for Titanium Complexes: Crystal Structures and Solution Dynamics Elucidating an η2 or η3-Coordination Mode. Hamura, S.; Oda, T.; Shimizu, Y.; Matsubara, K.; Nagashima, H. Journal of the Chemical Society, Dalton Transactions 2002, 1521-1527. Novel Coordinatively Unsaturated Bimetallic Complexes, [(η5-C5Me5)Ru(μ2-iPrNC(Me):NiPr)Ru(η5-C5Me5)]+: A Bridging Amidinate Ligand Perpendicular to the Metal-Metal Axis Effectively Stabilizes the Highly Reactive Cationic Diruthenium Species. Kondo, H.; Matsubara, K.; Nagashima, H. Journal of the American Chemical Society 2002, 124, 534-535. Ruthenium Amidinato-Carbene Complexes Containing a Ru-Si Bond: Formation and Reversible a-Silyl Group Migration from the Metal to the Carbene Ligand. Hayashida, T.; Nagashima, H. Organometallics 2001, 20, 4996-4998.
2001
Oxidative Addition of Allylic Substrates to Coordinatively Unsaturated Ruthenium Compounds, [Ru(η5-C5Me5)(η-amidinate)]: Preparation, Structure Elucidation, and Catalysis of Novel Ruthenium (IV)-η3-Allyl Complexes. Kondo, H.; Kageyama, A.; Yamaguchi, Y.; Haga, M.-A.; Kirchner, K.; Nagashima, H. Bulletin of the Chemical Society of Japan 2001, 74, 1927-1937. Isolable yet Highly Reactive Cationic Organoruthenium(II) Amidinates, [Ru(η6-C6R6)(η-amidinate)]+X-, Showing Signs of Coordinative Unsaturation: Isoelectronic Complexes of Ru(η5-C5Me5)(η-amidinate). Hayashida, T.; Yamaguchi, Y.; Kirchner, K.; Nagashima, H. Chemistry Letters 2001, 954-955. Diruthenium Carbonyl Complexes Bound to Guaiazulene: Preparation and Thermally Reversible Photoisomerization Studies of Phosphine and Phosphite Derivatives of (μ2,η3:η5-guaiazulene)Ru2(CO)5 and Iron Homologs. Matsubara, K.; Oda, T.; Nagashima, H. Organometallics 2001, 20, 881-892. (η5-C5Me5)Ru(μ2-iPrN:C(Me)NiPr)Ru(X)(η5-C5Me5): An Unusual Bonding Mode of μ2-Amidinate Ligand Providing the First Unequivocal Evidence for Coordinating Ability of π-Conjugate Electrons of the Amidinate Ligands to Transition Metals. Kondo, H.; Yamaguchi, Y.; Nagashima, H. Journal of the American Chemical Society 2001, 123, 500-501. Copper-Catalyzed Cyclization of N-Allylhalodifluoroacetamides: An Efficient Synthesis of α,α-Difluorinated γ-Lactams. Nagashima, H.; Isono, Y.; Iwamatsu, S.-I. ournal of Organic Chemistry 2001, 66, 315-319.
2000
Stoichiometric and Catalytic Activation of Si-H Bonds by a Triruthenium Carbonyl Cluster, (μ3,η2:η3:η5-acenaphthylene)Ru3(CO)7: Isolation of the Oxidative Adducts, Catalytic Hydrosilylation of Aldehydes, Ketones, and Acetals, and Catalytic Polymerization of Cyclic Ethers. Nagashima, H.; Suzuki, A.; Iura, T.; Ryu, K.; Matsubara, K. Organometallics 2000, 19, 3579-3590. The First Organoruthenium(IV) Complexes Containing Nitrogen Donor Ligands by Oxidative Addition of Allylic Substrates to Coordinatively Unsaturated Ru(II) Complexes. Kondo, H.; Yamaguchi, Y.; Nagashima, H. Chemical Communications 2000, 1075-1076. (η5-C5Me5)Ru(amidinate): Highly Reactive Ruthenium Complexes Formally Bearing 16 Valence Electrons Showing Signs of Coordinative Unsaturation. Yamaguchi, Y.; Nagashima, H. Organometallics 2000, 19, 725-727. |