摘要:
A method for producing an optically active fluorine-containing oxeten, the method being provided to include the steps of causing a fluorine-containing α-ketoester and an internal alkyne to react with each other in the presence of a transition metal complex that has an optically active ligand.
摘要:
A method for producing an optically active fluorine-containing oxeten, the method being provided to include the steps of causing a fluorine-containing α-ketoester and an internal alkyne to react with each other in the presence of a transition metal complex that has an optically active ligand.
摘要:
An optically active, fluorine-containing carbonyl-ene product is produced by reacting a fluorine-containing α-ketoester with an alkene in the presence of a transition metal complex having an optically active ligand. There are Mode 1 of conducting this reaction in the absence of reaction solvent, Mode 2 of conducting this reaction in a solvent that is low in relative dielectric constant, and Mode 3 of conducting this reaction in a halogenated hydrocarbon-series solvent. In each of these three modes, it is possible to produce the optically active, fluorine-containing carbonyl-ene product with low cost.
摘要:
Disclosed is a method of producing an optically active fluorinated oxetane, which can be an important pharmaceutical or agricultural intermediate, by reaction of a fluorinated α-keto ester with an acyl alkenyl ether in the presence of a transition metal complex with an optically active ligand. This method utilizes a catalytic asymmetric synthesis process and does not require a stoichiometric amount of chiral source. It is thus possible to dramatically reduce the amount of use of the asymmetric catalyst especially when the reaction is performed at a high concentration of substrate (with the use of a small amount of reaction solvent) or in the absence of a reaction solvent (under neat conditions). Further, the target optically active fluorinated oxetane can be obtained with high yield and with very high optical purity. The product contains almost no difficult-to-separate impurity and shows high chemical purity.
摘要:
An optically active, fluorine-containing carbonyl-ene product is produced by reacting a fluorine-containing α-ketoester with an alkene in the presence of a transition metal complex having an optically active ligand. There are Mode 1 of conducting this reaction in the absence of reaction solvent, Mode 2 of conducting this reaction in a solvent that is low in relative dielectric constant, and Mode 3 of conducting this reaction in a halogenated hydrocarbon-series solvent. In each of these three modes, it is possible to produce the optically active, fluorine-containing carbonyl-ene product with low cost.
摘要:
Disclosed is a method of producing an optically active fluorinated oxetane, which can be an important pharmaceutical or agricultural intermediate, by reaction of a fluorinated α-keto ester with an acyl alkenyl ether in the presence of a transition metal complex with an optically active ligand. This method utilizes a catalytic asymmetric synthesis process and does not require a stoichiometric amount of chiral source. It is thus possible to dramatically reduce the amount of use of the asymmetric catalyst especially when the reaction is performed at a high concentration of substrate (with the use of a small amount of reaction solvent) or in the absence of a reaction solvent (under neat conditions). Further, the target optically active fluorinated oxetane can be obtained with high yield and with very high optical purity. The product contains almost no difficult-to-separate impurity and shows high chemical purity.
摘要:
An anti-dazzling laminate made of an optical laminate including a light transparent base material and an anti-dazzling layer having a concavoconvex shape provided on the material. The laminate simultaneously satisfies formulae: 0≦G100≦15 (I), 0.1≦Hs≦5.0 (II), 0.3≦Rz≦1.8 (III) wherein G100 represents a scintillation value which is a standard deviation of a variation in brightness distribution at a resolution of 100 ppi measured on the surface of the laminate; Hs represents the surface haze value of the laminate; and Rz represents the average roughness of the concavoconvex shape of the anti-dazzling layer.
摘要:
The solid oxide fuel cell of the present invention has a substrate (1); an electrolyte (3) that is disposed on one surface of the substrate (1); and at least one electrode element E having an anode (5) and a cathode (7) disposed on the same surface of the electrolyte (3) with a predetermined space therebetween.
摘要:
An optical layered body including a light-transmitting substrate and an antiglare layer provided on the light-transmitting substrate. The antiglare layer has a surface roughness on the outermost surface. In the optical layered body, a mean spacing of tops of local peak of profile S is 0.045 mm or more and 0.10 mm or less determined by the procedure disclosed in the specification. The optical layered body can attain properties such as an antiglare property, scintillation prevention and black color reproducibility such as gloss blackness simultaneously.
摘要:
An optical laminate is provided which has anti-dazzling properties and can realize excellent glare preventive properties and black reproducibility (gradation rendering of black at low brightness). The optical laminate includes a light transparent base material and an anti-dazzling layer or a light diffusion layer provided on the light transparent base material, wherein the outermost surface of the anti-dazzling layer or light diffusion layer has a concavoconvex surface. The anti-dazzling layer satisfies the requirements that Sm is not less than 100 μm and not more than 600 μm, θa is not less than 0.1 degree and not more than 1.2 degrees, and Rz is more than 0.2 μm and not more than 1 μm, wherein Sm represents the average spacing of concavoconvexes in the anti-dazzling layer, θa represents the average inclination angle of the concavoconvexes, and Rz represents the average roughness of the concavoconvexes.