摘要:
Disclosed herein are compounds of the general Formula (I), and methods of synthesizing substituted bicyclo[1.1.1 jpentanes. The synthetic methods described herein use a [1.1.1]propellane, a Group VIII transition metal compound, a hydride source and a reagent that can contribute a substituent to form a substituted bicyclo[1.1.1]pentane, such as a compound of the general Formula (I).
摘要:
Disclosed are processes for industrially advantageously producing at a good yield respectively, a hydrogenated aromatic polycarboxylic acid and an acid anhydride thereof each having a high purity. The present invention provides processes for producing a hydrogenated aromatic polycarboxylic acid by (1) hydrogenating an aromatic polycarboxylic acid at a hydrogen partial pressure of 1 MPa or more by a batch system in the presence of a catalyst containing rhodium and palladium in a proportion of 0.5 to 10 parts by weight per 100 parts by weight of the aromatic polycarboxylic acid and by (2) feeding an aromatic polycarboxylic acid to a filling bed of a catalyst containing rhodium and palladium at a WHSV of 1 to 100 h -1 to hydrogenate it at a hydrogen partial pressure of 1 MPa or more by a continuous flow system, and a process for producing a hydrogenated aromatic polycarboxylic anhydride by subjecting the hydrogenated aromatic polycarboxylic acid obtained by the processes described above to dehydration reaction with acetic anhydride of 0.64 to 5.7 times mole based on a carboxyl group of the hydrogenated aromatic polycarboxylic acid.
摘要:
An adamantanetricarboxylic acid derivative is represented by following Formula (1): wherein X is a hydrogen atom or a hydrocarbon group; and R 1 , R 2 and R 3 may be the same as or different from one another and are each a carboxyl group which may be protected by a protecting group, or a carbonyl halide group, wherein at least one of R 1 , R 2 and R 3 is a carboxyl group which is protected by a protecting group, or a carbonyl halide group.
摘要:
A nanodiamond according to the present invention has acidic functional groups, contains the acidic functional groups in a number density of 1 or more per square nanometer in the nanodiamond surface, and has a specific surface area of 150 m 2 /g or more. Particles of the nanodiamond preferably have a D50 (median diameter) of 9 nm or less. The nanodiamond is preferably derived from a nanodiamond synthesized by a detonation technique (in particular, an air-cooling detonation technique).
摘要:
A process for producing a hydrogenation product of aromatic carboxylic acid which comprises continuously producing the hydrogenation product of aromatic carboxylic acid by hydrogenating an aromatic carboxylic acid having a melting point of 250°C or higher in a solvent in the presence of a solid catalyst, wherein the hydrogenation is conducted in a condition such that substantially the entire amount of the aromatic carboxylic acid of a raw material is dissolved in the solvent by recycling a portion of a reaction liquid taken out of a reactor into the reactor. An aromatic carboxylic acid having a high melting point and hardly soluble in solvents can be hydrogenated at a suitable reaction temperature in accordance with a continuous process without using a great amount of a solvent and the reaction product of the object compound can be produced very efficiently.
摘要:
Molecular building beams, liquid crystals, and surfactants in the form of compounds based on [1.1.1]propellane, including poly[1.1.1]propellanes. Molecular building beams having a telomeric or polymeric chain staff, and linking groups functionalized on one or both ends of the staff. A system for linking the beams to connecting units to construct molecular structures of various forms, such as whips, combs, scaffoldings, nets, or stars. Other broad aspects of the invention provide liquid crystals and surfactants. The liquid crystals include telomeric or polymeric compounds functionalized with flexible end groups, while the surfactant compounds are functionalized with surface active end groups. Methods of synthesizing the various compounds are also provided.
摘要:
Substituted imides of the following formula are antipsychotic, anxiolytic agents with very little extrapyramidal side effects: in which X is -O-, -S-, -SO-, -SO₂-, -CR₃R₄- where R₃ and R₄, independently, are hydrogen, alkyl of 1 to 4 carbon atoms or, taken together with the carbon atom to which they are attached, R₃ and R₄ form a cycloalkyl group of 3 to 5 carbon atoms; n is one of the integers 2, 3, 4 or 5; R is phenyl, alkylphenyl in which the alkyl group contains 1 to 4 carbon atoms, halophenyl, trifluoromethylphenyl, alkoxyphenyl, in which the alkoxy substituent contains 1 to 3 carbon atoms, 2-pyrimidinyl, halopyrimidin-2-yl, 2-pyrazinyl, halopyrazin-2-yl, 2-pyridinyl, cyanopyridin-2-yl, halopyridin-2-yl, quinolyl, or haloquinolyl; R₁ and R₂, taken together, are alkylene of 3 to 5 carbon atoms or alkenylene of 3 to 5 carbon atoms, or taken with the carbon atoms to which they are attached, R₁ and R₂ complete a benzene ring, or a group of the formula: where Y is -CH₂, -CH₂-CH₂-, -O- or -S- and the dotted line represents optional unsaturation; or a pharmaceutically acceptable salt thereof. In addition, the intermediate b3-dicarboxylic and the corresponding anhydrides - 2,3,3a,4,5,6,6a,7,7a-decahydro-4,6,7-metheno-1 H -cyclopena[a]pentalene-1,3-dicarboxylic acid and octahydro-1, 5-methano-6,8,9-metheno-pentaleno[1,2,-d]oxepin-2,4(1 H , 5 H )-dione represent especially significant aspects of the invention.
摘要:
Disclosed herein are compounds of the general Formula (I), and methods of synthesizing substituted bicyclo[1.1.1 jpentanes. The synthetic methods described herein use a [1.1.1]propellane, a Group VIII transition metal compound, a hydride source and a reagent that can contribute a substituent to form a substituted bicyclo[1.1.1]pentane, such as a compound of the general Formula (I).