The Experts below are selected from a list of 179958 Experts worldwide ranked by ideXlab platform
Takehito Tsukinoki - One of the best experts on this subject based on the ideXlab platform.
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Organic Reaction in water. Part 5.1 Novel synthesis of anilines by zinc metal-mediated chemoselective reduction of nitroarenes
Green Chemistry, 2001Co-Authors: Takehito Tsukinoki, Hirohisa TsuzukiAbstract:Nitroarenes can be reduced in high yields to the corresponding anilines using zinc metal and NH4Cl in water without any Organic solvent at 80 °C with a simple procedure at low cost. The procedure is powerful enough to reduce sterically hindered 2,6-dimethylnitrobenzene and is chemoselective for nitro groups; ester, amide and halide substituents on aromatic rings are unaffected.
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Organic Reaction in water. Part 4. New synthesis of vicinal diamines using zinc powder-promotedcarbon–carbon bond formation
Green Chemistry, 2000Co-Authors: Takehito Tsukinoki, Yoshiharu Mitoma, Satoko Nagashima, Masashi TashiroAbstract:Reductive coupling of aromatic imines is performed by the use of zinc powder and additives such as NH4Cl and L-tyrosine in water without any Organic solvents under mild conditions to give the corresponding vicinal diamines in good yields; cross-coupling of N-benzylideneaniline and benzaldehyde similarly proceeds in aqueous media to afford the corresponding 2-aminoalcohol.
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Organic Reaction in water. Part 1. A convenient method for reduction of imines using zinc powder
Tetrahedron Letters, 1998Co-Authors: Takehito Tsukinoki, Yoshiharu Mitoma, Satoko Nagashima, Takatoshi Kawaji, Iwao Hashimoto, Masashi TashiroAbstract:Abstract Reduction of imines was performed with zinc powder in 5% aq NaOH solution without any Organic solvents under mild conditions, and the corresponding amines were obtained in good yields.
Masashi Tashiro - One of the best experts on this subject based on the ideXlab platform.
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Organic Reaction in water. Part 4. New synthesis of vicinal diamines using zinc powder-promotedcarbon–carbon bond formation
Green Chemistry, 2000Co-Authors: Takehito Tsukinoki, Yoshiharu Mitoma, Satoko Nagashima, Masashi TashiroAbstract:Reductive coupling of aromatic imines is performed by the use of zinc powder and additives such as NH4Cl and L-tyrosine in water without any Organic solvents under mild conditions to give the corresponding vicinal diamines in good yields; cross-coupling of N-benzylideneaniline and benzaldehyde similarly proceeds in aqueous media to afford the corresponding 2-aminoalcohol.
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Organic Reaction in water. Part 1. A convenient method for reduction of imines using zinc powder
Tetrahedron Letters, 1998Co-Authors: Takehito Tsukinoki, Yoshiharu Mitoma, Satoko Nagashima, Takatoshi Kawaji, Iwao Hashimoto, Masashi TashiroAbstract:Abstract Reduction of imines was performed with zinc powder in 5% aq NaOH solution without any Organic solvents under mild conditions, and the corresponding amines were obtained in good yields.
Janet L Scott - One of the best experts on this subject based on the ideXlab platform.
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understanding solid solid Organic Reactions
Journal of the American Chemical Society, 2001Co-Authors: Gadi Rothenberg, Andrew P Downie, Colin L Raston, Janet L ScottAbstract:The concept of an Organic Reaction between two macroscopic solid particles is investigated. Thus, we study several Reactions that have been recently reported to proceed “in the solid phase” and clearly show that, in most cases, grinding the two solid reactants together results in the formation of a liquid phase. This is true both for catalytic transformations (e.g., aldol condensations and oligomerization of benzylic compounds) and for noncatalytic Reactions (Baeyer−Villiger oxidations, oxidative coupling of naphthols using iron chloride, condensation of amines and aldehydes to form azomethines, homo-etherification of benzylic alcohols using p-toluenesulfonic acid, and nuclear aromatic bromination with NBS). This liquefaction implies the existence of a eutectic mixture with Tfusion below ambient temperature (although both reagents have higher than ambient melting points). In cases where heating is required, it is again clear that a phase change (from solid to liquid) occurs, explaining the observed reacti...
Xinhe Bao - One of the best experts on this subject based on the ideXlab platform.
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Applications of In Situ NMR in Catalytic Processes of Organic Reactions
Current Organic Chemistry, 2001Co-Authors: Xiuwen Han, Zhimin Yan, Weiping Zhang, Xinhe BaoAbstract:In situ MAS NMR has been demonstrated to be a superior technique for analyzing desorbed reactants, reacting adsorbates, intermediates and products. The results are useful for getting deeper insights into catalytic processes and Reaction kinetics, and for revealing the mechanisms of Organic Reactions. The utility of in situ NMR spectroscopy has demonstrated that this technique is an important means for the studies of catalytic Organic Reactions. The objective of this paper is to give a review on the generation of apparatus for in situ MAS NMR experiments, and to illustrate the applications of the in situ MAS NMR techniques in various important Organic Reactions catalyzed by solid catalysts. The typical Reactions studied by in situ MAS NMR techniques include conversion of methanol to hydrocarbons (MTG process), aromatization of methane, ethylbenzene Reaction over zeolite HMOR. observation of carbenium intermediates formation, and photocatalytic Organic Reaction.
Satoko Nagashima - One of the best experts on this subject based on the ideXlab platform.
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Organic Reaction in water. Part 4. New synthesis of vicinal diamines using zinc powder-promotedcarbon–carbon bond formation
Green Chemistry, 2000Co-Authors: Takehito Tsukinoki, Yoshiharu Mitoma, Satoko Nagashima, Masashi TashiroAbstract:Reductive coupling of aromatic imines is performed by the use of zinc powder and additives such as NH4Cl and L-tyrosine in water without any Organic solvents under mild conditions to give the corresponding vicinal diamines in good yields; cross-coupling of N-benzylideneaniline and benzaldehyde similarly proceeds in aqueous media to afford the corresponding 2-aminoalcohol.
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Organic Reaction in water. Part 1. A convenient method for reduction of imines using zinc powder
Tetrahedron Letters, 1998Co-Authors: Takehito Tsukinoki, Yoshiharu Mitoma, Satoko Nagashima, Takatoshi Kawaji, Iwao Hashimoto, Masashi TashiroAbstract:Abstract Reduction of imines was performed with zinc powder in 5% aq NaOH solution without any Organic solvents under mild conditions, and the corresponding amines were obtained in good yields.