摘要:
An aromatic compound represented by the general formula Ar1X is reacted with a palladium compound and a phosphine derivative, in the presence of a first basic substance, thereby producing a palladium-complex compound represented by the general formula Ar1—PdL2X. This palladium-complex compound is reacted with a benzoic acid represented by the general formula Ar2—COOH, in the presence of a second basic substance, thereby producing another palladium-complex compound represented by the following general formula. The above palladium-complex compounds are useful as catalysts and can be produced easily by the above reactions. In the above general formulas, Ar1 is an aryl group; and X is a halogen that is fluorine, chlorine, bromine or iodine, trifluoromethanesulfonate group, an alkylsulfonate group having a carbon atom number of 1-4, or a substituted or unsubstituted arylsulfonate group; each L is independently a phosphine ligand; and Ar2 is an aryl group.
摘要:
An aromatic compound represented by the general formula Ar1X is reacted with a palladium compound and a phosphine derivative, in the presence of a first basic substance, thereby producing a palladium-complex compound represented by the general formula Ar1—PdL2X. This palladium-complex compound is reacted with a benzoic acid represented by the general formula Ar2—COOH, in the presence of a second basic substance, thereby producing another palladium-complex compound represented by the following general formula. The above palladium-complex compounds are useful as catalysts and can be produced easily by the above reactions. In the above general formulas, Ar1 is an aryl group; and X is a halogen that is fluorine, chlorine, bromine or iodine, trifluoromethanesulfonate group, an alkylsulfonate group having a carbon atom number of 1-4, or a substituted or unsubstituted arylsulfonate group; each L is independently a phosphine ligand; and Ar2 is an aryl group.
摘要:
A process for producing an optically active dihydropyran derivative represented by formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each represents a hydrogen atom, a lower alkyl group, a tri-lower alkylsilylmethyl group, a lower alkoxycarbonylamino group, or an --OR.sup.5 group, wherein R.sup.5 represents a lower alkyl group, a lower acyl group, a lower alkoxycarbonyl group, a di-lower alkylcarbamoyl group, or a tri-lower alkylsilyl group, or R.sup.1 and R.sup.2 are taken together to form a 5- to 7-membered cyclic hydrocarbon group or to form a condensed heterocyclic group with an oxygen atom, or R.sup.2 and R.sup.3 are taken together to form a 5- to 7-membered cyclic hydrocarbon group or to form a condensed heterocyclic group with an oxygen atom, provided that all of R.sup.1, R.sup.2, R.sup.3, and R.sup.4 do not represent hydrogen atoms at the same time; and R.sup.6 represents a lower alkyl group, which comprises reacting a diene compound represented by formula (2): ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 have the same meanings as defined above, with a glyoxylic acid ester represented by formula (3): ##STR3## wherein R.sup.6 has the same meaning as defined above, in the presence of a binaphthol-titanium complex represented by formula (4): ##STR4## wherein X represents a chlorine atom or a bromine atom, is disclosed.
摘要:
A process for producing an optically active .beta.-hydroxyketone represented by formula (I): ##STR1## by catalytic asymmetrical aldol reaction is disclosed, comprising reacting a silyl-enol ether represented by formula (II): ##STR2## with a substituted aldehyde represented by formula (III):R.sup.5 CHO (III)in the presence of a binaphthol-titanium complex represented by formula (IV): ##STR3## An optically active .beta.-hydroxyketone is efficiently produced with diastereo-specificity and enantio-specificity.
摘要:
A process for preparing an .alpha.-hydroxycarboxylate represented by formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group; R.sup.2 represents a lower alkyl group, a phenyl group or a cycloalkyl group, or R.sup.1 and R.sup.2 are bonded to each other to form a five- to seven-membered cycloalkenyl or bicycloalkenyl ring which may be substituted with a lower alkyl group; and R.sup.3 represents a lower alkyl group,which comprises reacting an olefin compound represented by formula (II): ##STR2## wherein R.sup.1 ' represents a hydrogen atom or a lower alkyl group; and R.sup.2 ' represents a lower alkyl group, a phenyl group or a cycloalkyl group, or R.sup.1 ' and R.sup.2 ' are bonded to each other to form a five- to seven-membered cycloalkyl or bicycloalkyl ring which may be substituted with a lower alkyl group,with a glyoxylate represented by formula (III): ##STR3## wherein R.sup.3 is as defined above, in the presence of a binaphthol-titanium complex represented by formula (IV): ##STR4## wherein X represents a chlorine atom or bromine atom.
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:
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 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 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.