A5053077822- Organometallic Complex Synthesis and Catalysis
- Asymmetric Hydrogenation and Catalysis
- Synthesis and characterization of novel inorganic/organometallic compounds
- Organoboron and organosilicon chemistry
- Synthetic Organic Chemistry Methods
- Mechanical Circulatory Support Devices
- Catalytic Alkyne Reactions
- Chemical Synthesis and Reactions
- Catalytic Cross-Coupling Reactions
- Inorganic and Organometallic Chemistry
- Catalytic C–H Functionalization Methods
- Cardiac Arrest and Resuscitation
- Asymmetric Synthesis and Catalysis
- Electron and X-Ray Spectroscopy Techniques
- Carbon dioxide utilization in catalysis
- Advancements in Photolithography Techniques
- Cyclopropane Reaction Mechanisms
- Nanoplatforms for cancer theranostics
- Silicone and Siloxane Chemistry
- Respiratory Support and Mechanisms
- thermodynamics and calorimetric analyses
- Chemical Reactions and Isotopes
- Insect behavior and control techniques
- Oxidative Organic Chemistry Reactions
- Organophosphorus compounds synthesis
National Cerebral and Cardiovascular Center
1996-2020
Koshien University
2018-2019
Nara Institute of Science and Technology
2015-2018
Takara (Japan)
2018
National Institute of Advanced Industrial Science and Technology
2001-2014
Institute of Agrobiological Sciences
2010-2013
Tokyo University of Science
2007-2011
The University of Tokyo
2011
Tokyo Electron (Japan)
2006-2010
Zhejiang University
2009
As good as gold: Hydration of alkynes by using gold–acid catalyst systems with high turnover frequencies provides a greener synthetic route to carbonyl compounds in yields, shown.
[reaction: see text] Addition of aniline derivatives to aromatic and aliphatic alkynes proceeds efficiently in the presence a gold(I) catalyst (0.01-1.0 mol %) afford ketimines good yields
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEpoxidation of olefins by cytochrome P-450 model compounds: kinetics and stereochemistry oxygen atom transfer origin shape selectivityJames P. Collman, John I. Brauman, Bernard Meunier, Teruyuki Hayashi, Thomas Kodadek, Scott A. RaybuckCite this: J. Am. Chem. Soc. 1985, 107, 7, 2000–2005Publication Date (Print):April 1, 1985Publication History Published online1 May 2002Published inissue 1 April...
In legumes, Ca2+/calmodulin-dependent protein kinase (CCaMK) is a component of the common symbiosis genes that are required for both root nodule (RN) and arbuscular mycorrhiza (AM) symbioses thought to be decoder Ca2+ spiking, one earliest cellular responses microbial signals. A gain-of-function mutation CCaMK has been shown induce spontaneous nodulation without rhizobia, but significance activation in bacterial and/or fungal infection processes not fully understood. Here we show CCaMKT265D...
Changes in intracellular temperatures reflect the activity of cell. Thus, tool to measure could provide valuable information about cellular status. We previously reported a method analyze temperature distribution using fluorescent polymeric thermometer (FPT) combination with fluorescence lifetime imaging microscopy (FLIM). Intracellular delivery FPT used previous study required microinjection. now report novel that is cell permeable and highly photostable, we describe application this...
Das goldene Zeitalter? Die Hydratisierung von Alkinen mithilfe eines Goldkatalysatorsystems mit saurem Cokatalysator liefert die entsprechenden Carbonylverbindungen hohen Umsatzzahlen und in Ausbeuten (siehe Schema).
Abstract Although cytosolic free Ca2+ mobilization induced by microbe/pathogen-associated molecular patterns is postulated to play a pivotal role in innate immunity plants, the links between and downstream defense responses still remain largely unknown. Calcineurin B-like proteins (CBLs) act as sensors activate specific protein kinases, CBL-interacting kinases (CIPKs). We here identified two CIPKs, OsCIPK14 OsCIPK15, rapidly microbe-associated patterns, including chitooligosaccharides...
The temperature-dependent fluorescence spectra of a new polymeric thermometer enabled highly sensitive and practical ratiometric temperature sensing inside mammalian cells.
Palladium-catalysed carbonylation of aryl halides with alcohols or NEt2H proceeds in ionic liquid media (1-butyl-3-methylimidazolium tetrafluoroborate hexafluorophosphate). The catalyst/ionic mixture could be recycled, after separation the product by either distillation extraction ether. Carbonylation forming benzoates was greatly accelerated use liquid.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPlatinum complex catalyzed double silylation of ethylene and norbornene with disilanesTeruyuki Hayashi, Toshiaki Kobayashi, Aparecida M. Kawamoto, Hiroshi Yamashita, Masato TanakaCite this: Organometallics 1990, 9, 1, 280–281Publication Date (Print):January 1990Publication History Published online1 May 2002Published inissue 1 January 1990https://pubs.acs.org/doi/10.1021/om00115a043https://doi.org/10.1021/om00115a043research-articleACS...
Abstract The hydroformylation of 1-alkenes was efficiently catalyzed by PtCl2–diphosphine–SnX2 systems whose diphosphines were 1,4-bis(diphenylphosphino)butane derivatives with rigid ring skeletons. effects the structure diphosphines, P/Pt atomic ratio, sort tin(II) halide or solvent, reaction variables, and olefins on relative rate product distribution investigated. A higher than when using HRh(CO)(PPh3)3, a linearity aldehydes up to 99%, attained. coordination effective as well reasons for...
Abstract A cationic fluorescent nanogel thermometer based on thermo‐responsive N‐isopropylacrylamide and environment‐sensitive benzothiadiazole was developed with a new azo compound bearing imidazolium rings as the first radical initiator. This showed an excellent ability to enter live mammalian cells in short incubation period (10 min), high sensitivity temperature variations (temperature resolution of 0.02–0.84 °C range 20–40 °C), remarkable non‐cytotoxicity, which permitted ordinary cell...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidative addition of halosilanes to zero-valent platinum complexesHiroshi. Yamashita, Teruyuki. Hayashi, Toshiaki. Kobayashi, Masato. Tanaka, and Midori. GotoCite this: J. Am. Chem. Soc. 1988, 110, 13, 4417–4418Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Published inissue 1 June 1988https://pubs.acs.org/doi/10.1021/ja00221a053https://doi.org/10.1021/ja00221a053research-articleACS PublicationsRequest reuse...
The activity of a platinum dichloride–phosphine–tin(II) chloride complex as hydroformylation catalyst was dramatically enhanced by the use diphosphine ligands which were capable forming strained seven-membered chelate ring; best ligand trans-1,2-bis(diphenylphosphinomethyl)cyclobutane, afforded hexanals (n/iso = 99/1) from pent-1-ene with much higher reaction rate than HRh(CO)(PPh3)3.
Abstract (1S,2S)-1,2-Bis(diphenylphosphinoxy)cyclohexane, (1S,2S)-1,2-bis(phosphinomethyl)cyclohexanes, (2R,3R)-2,3-O-isopropylidene-2,3-dihydroxy-1,4-bis(phosphino) butanes, and (1R,2R)-1,2-bis(phosphinomethyl) cyclobutanes, whose phosphino groups were diphenylphosphino or 5H-dibenzophosphol-5-yl where the rotation of phenyl-P bonds is impossible, used as chiral ligands in rhodium-catalyzed asymmetric hydroformylation. The highest stereoselectivity was attained by use...
The gold(I) complex (MeAuPPh3) was found to be a highly effective catalyst for the hydrative cyclization of 1,6-diynes form corresponding 3-methyl hex-2-enone derivatives with good excellent yield. proposed mechanism is described.
For the establishment of an effective root nodule symbiosis, a coordinated regulation infection processes between epidermis and cortex is required. However, it remains unclear whether symbiotic genes identified so far are involved in epidermal and/or cortical infection, e.g. thread formation or cell division. To analyze gene requirements process, we have developed epidermis-specific expression system (pEpi system) examined NFR1, NFR5, NUP85, NUP133, CASTOR, POLLUX, CCaMK, CYCLOPS, NSP1 NSP2...
A cationic eight-electron three-coordinate organobismuth complex with a weakly coordinating borate anion, [tBuN(CH2C6H4)2Bi]+[B(C6F5)4]- (3), and its coordination complexes neutral donor molecules were synthesized structurally characterized. The reaction of tBuN(CH2C6H4)2Bi−X (1a: X = Br, 1b: Cl) Li[B(C6F5)4] afforded the ionic 3. Complex 3 reacted 1a or 1b to form halogen-bridged dinuclear [{tBuN(CH2C6H4)2Bi}2(μ-X)]+[B(C6F5)4]- (6: 7: Cl). Various coordinated bismuth atom 3, four...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of .alpha.-keto esters via palladium-catalyzed double carbonylationToshiyasu Sakakura, Hiroshi Yamashita, Toshiaki Kobayashi, Teruyuki Hayashi, and Masato TanakaCite this: J. Org. Chem. 1987, 52, 26, 5733–5740Publication Date (Print):December 1, 1987Publication History Published online1 May 2002Published inissue 1 December 1987https://pubs.acs.org/doi/10.1021/jo00235a017https://doi.org/10.1021/jo00235a017research-articleACS...
Disintegration of the vacuolar membrane (VM) has been proposed to be a crucial event in various types programmed cell death (PCD) plants. However, its regulatory mechanisms are mostly unknown. To obtain new insights on regulation VM disintegration during hypersensitive death, we investigated structural dynamics and permeability VM, as well cytoskeletal reorganization PCD tobacco BY-2 cells induced by proteinaceous elicitor, cryptogein. From sequential observations, have identified following...