137 results about "Naphthalene Compound" patented technology

Mono- and diimide perylene and naphthalene compounds, N- and core-substituted with electron-withdrawing groups, for use in the fabrication of various device structures.

Compound of formula (I): wherein: T represents alkylene, A and B together form a naphthalene, dihydronaphthalene, or tetrahydronaphthalene group, R represents hydrogen, hydroxy, R' or OR', R' being as defined in the description, G1 represents halogen, a radical R1 or a group -O-CO-R1, R1 being as defined in the description, G2 represents a group selected from: X, R2 and R21 being as defined in the description, and medicinal products containing the same which are useful in the treatment of a condition related to the melatoninergic system.

The present disclosure relates to lubricant oil compositions formed from base stock oils to optimize internal combustion engine performance. Base stock oils are identified that have selected cetane number characteristics and relatively reduced reactivity to improve their associated combustion characteristics and reduce engine knock without the need to modify the engine fuel or engine parameters such as compression ratio and / or ignition timing. The base stocks may specifically include esters of dicarboxylic acids, esters of trimellitic anhydride and / or alklyated naphthalene compounds.

The invention discloses axially-chiral indole-naphthalene compounds and a preparation method thereof. The axially-chiral indole-naphthalene compounds have a chemical structure represented by a formula9 shown in the description; and the method comprises the following steps: a compound represented by a formula 7 and a compound represented by a formula 8 are used as reaction raw materials, a mixed solution of 1,1,2,2-tetrachloroethane and p-xylene is used as a solvent, a molecular sieve is added, a reaction is performed under stirring under the action of a chiral phosphoric acid catalyst, the reaction is tracked by TLC until the reaction is completed, filtration is performed, concentration is performed, purification is performed, and therefore one compound is obtained. The method for preparing the axially-chiral indole-naphthalene compounds provided by the invention is an asymmetric addition reaction under catalysis of organic small molecules, starts from the racemic raw material to construct the axially-chiral indole-naphthalene structure in one step, and has the advantages of simple and convenient operation, mild reaction conditions and economical easily-available raw materials, and the prepared axially-chiral indole-naphthalene compounds have high optical purity; and the axially-chiral indole-naphthalene compounds prepared by the method are expected to be widely used in the field of asymmetric catalysis.

Disclosed is a multilayer electroluminescent device comprising a cathode, an anode, a light emitting layer (LEL) and a layer disposed between the cathode and anode containing a naphthalene compound represented by formula (1): whereinm is 0, 1 or 2;each Ra is an independently selected substituent and each n is independently 0 to 3;each Ara is an independently selected aromatic group; andeach Arb is an independently selected carbocyclic aromatic group;provided that two ring substituents may join to form a ring.The device provides a desired high luminance.

Described herein are heterocyclic organic compounds of following formulae: More specifically, described herein are fused heterocyclic naphthalene compounds, polymers based on fused heterocyclic naphthalene compounds, methods for making these compounds, and uses thereof. The compounds described have improved polymerization and stability properties that allow for improved material processibility for use as organic semiconductors (OSCs).

The invention discloses a novel method for synthesizing 4-bromo-1,2-dihydrocyclobuteneo[alpha]naphthalene. The method comprises the following steps: (1) adding 1,2-dihydrocyclobuteneo[alpha]naphthalene, glacial acetic acid and methanol into a low-temperature reactor, stirring, and reducing the temperature to be 10 DEG C below zero to 0 DEG C; (2) dissolving bromine in glacial acetic acid at the temperature of 10 DEG C below zero to 0 DEG C, dripping reaction liquid, preserving the temperature after the dripping operation of the reaction liquid is finished, keeping the reaction liquid in dark place, putting the reaction liquid in a low-temperature cabinet freezer, reacting at the temperature of 30 DEG C below zero to 15 DEG C below zero, and standing the reaction liquid at room temperature; (3) adding the reaction liquid into dichloromethane, extracting an organic phase, adding an aqueous solution of sodium metabisulfite into the organic phase, stirring, standing, layering, washing by using deionized water, separating out the organic phase, and drying; and (4) concentrating the dried organic phase into thick solid, and recrystallizing, thereby obtaining 4-bromo-1,2-dihydrocyclobuteneo[alpha]naphthalene. According to the method disclosed by the invention, 1,2-dihydrocyclobuteneo[alpha]naphthalene synthesized by self research and development serves as a raw material, and 4-bromo-1,2-dihydrocyclobuteneo[alpha]naphthalene with excellent performance and low price is synthesized. The reaction conditions are mild, the operation is simple, and the yield is high.

The present invention relates to a 105 percent acidic sulfonation production process of 2-naphthol, and belongs to the technical field of chemical production. In the process, molten refined naphthalene is added into a reaction still and is heated to be at the temperature between 135 DEG C and 140 DEG C, sulfuric acid of 105 percent is added within 30 minutes according to a mass ratio of 1.28 to 1, the temperature in the reaction still is raised to be 160 DEG C and maintained for 135 minutes, the sulphonation product with an acidity of 24 to 27 percent is prepared, and the next procedure is performed. The present invention solves the problems in the traditional process with sulphonation of sulphuric acid of 100 percent that water is generated in the process of substituting hydrogen on a double benzene nucleus with sulfonic group and has dilution effects on sulphuric acid, the substitution reaction is impeded, water becomes water vapor at the temperature of 160 DEG C which has hydrolysis effects on 1-naphthalene sulfonic acid and 2-naphthalene sulfonic acid, and the total yield rate of the sulfonation reaction is not high. And the present invention has the advantages that sulfuric acid of 105 percent is added, the sulfonation conversion and the product yield rate are improved, the generated naphthalene compounds and other byproducts are reduced, and the yield rate is improved by 1.1 percent.

A bis(aminostyryl)naphthalene compound represented by the general formula [I] or the like below. (where R2 and R3 each denotes an unsubstituted aryl group; R1 and R4 each denotes an aryl group having a specific substituent such as methoxy group; and R5 and R6 each denotes a cyano group or the like.)A process for producing a bis(aminostyryl)naphthalene compound represented by the general formula [I] by condensation of, for example, 4-(N,N-diarylamino)benzaldehyde with diphosphonic ester or diphosphonium.The bis(aminostyryl)naphthalene compound emits intense yellow or red light. The process permits efficient production of the bis(aminostyryl)naphthalene compound.