34 results about "Cyclopentadienone" patented technology

A method of making a compound of the formula shown below is disclosed: wherein Z is Se or S; Y is NH or O; X is O or S and W and W' are independently selected from the group consisting of hydrogen, -C=ONH 2 , -C=ONHR', -C=ONR'R', -C N, and R' is C 1-6 alkyl and the resultant monomer compounds. The method includes contacting a 3,4-disubstituted thiophene or selenophene or disubstituted thiophene or selenophene derivatives with a carbonyl or thiocarbonyl containing compound selected from the group consisting of ureas, thioureas, carbonate esters, thionocarbonates, thiocarbonate esters, or orthocarbonates. The monomer compounds are suitable for forming polymers for use in a wide range of electronic applications.

A method for synthesizing 3,3-(phenylene oxide)di(2, 4, 5-triphenyl)cyclopentadienyl ketone is carried out by Foury reacting phenyl ether with phenacerine with anhydrous aluminum muriate as catalyst and methylene dichloride as solvent to prepare 4-phenacelate withIstructure, oxidizing 4-phenacelate into 4-phenyl-oxalate withIIstructure with potassium permanganate as oxidant and under existence ofphase-transferring catalyst, and condensing 4-phenyl-oxalate withIIstructure with 1,3-diphenyl acetone under alkali catalyzing. It's cheap, efficient and non-toxic.

Polyarylene material. The present invention relates to certain polyarylene oligomers with enhanced solubility, which are suitable for forming layers of dielectric materials in electronic applications. The present invention provides an oligomer comprising as polymerized units a first monomer comprising two cyclopentadienone moieties, a second monomer having formula (1) and a second monomer having formula (2) the third monomer.

An acenaphthene-type polyphenyl copolymerized allyl phenolic active dilution resin and a preparation method thereof, relating to a resin and a preparation method thereof, the phenolic resin synthesized by the present invention reacts with allyl chloride to generate an allyl ether phenolic resin, and the resin is used in Claisen rearrangement reaction occurs at high temperature, and then allyl phenolic resin is generated; at the same temperature, acenaphthyl cyclopentadienone is added to undergo Diels-Alder reaction with allyl resin, and finally acenaphthyl polyphenyl copolymerized allyl The phenolic reactive diluting resin replaces the phenolic hydroxyl hydrogen in the phenolic resin with an allyl group, and the resulting resin has a relatively low viscosity, which can be used as a reactive diluting resin to reduce the resin viscosity. The acenaphthene-type polyphenyl condensed ring structure with larger molecular groups is introduced, and under specific conditions, Diels-Alder reaction occurs with the double bond in the allyl phenolic resin, and multiple benzene ring groups are introduced to make the synthesized resin It has high temperature resistance and thermo-oxidative stability.

The invention discloses a 2,3,5,6,7,8-hexa-substituted imidazole[1,2-a] pyridine fluorescent material and a synthesis method thereof. The molecular structural formula is shown in the specification. The method comprises the following specific steps: dissolving a cyclopentadienone derivative, a 1,2-dicarbonyl compound and an ammonium salt in an anhydrous solvent, wherein the molar ratio of the cyclopentadienone derivative to the 1,2-dicarbonyl compound to ammonium salt is 1:(0.9-1.1):(4-10); heating to 100-160 DEG C to react for 2-6 hours, performing reduced pressure distillation after the reaction to remove the solvent, and purifying to obtain the solid, namely the fluorescent material 2,3,5,6,7,8-hexa-substituted imidazole[1,2-a] pyridine compound. In the method, the cyclopentadienone derivative and 1,2-dicarbonyl compound are utilized as raw materials and the inorganic ammonium salt is utilized as an ammonia source, thus the source range of the raw materials is wide, the raw materials are easily available, the operations are simple, a one-pot method is adopted for synthesis, the steps are short, the yield is high and the method can be used in mass production easily.

The invention relates to a preparation method of a pyrrole methenyl fluorescent dye. Cyclopentenone derivant and ammonium salt with the mole ratio of 1:4-200 are put in a seal tube reactor or an autoclave, the seal tube reactor or the autoclave is sealed and heated after an organic solvent is added, and reaction is carried out for 2-24 hours at the temperature of 100-140 DEG C and 1-10 atmospheres. Compared with the existing synthesis method of deriving from aromatic aldehyde and pyrrole, easy-to-make and easy-to-obtain carbonyl compound-cyclopentenone derivant and inorganic ammonium salt are adopted as raw materials, and compared with the conventional pyrrole preparation way, the preparation method disclosed by the invention has the advantages that the raw material source scope is wide, the whole preparation step is short, the operation is simple, the production rate is high, synthesis steps of protection and deprotection are avoided, multiple substituents can be obtained in one step, and products are easier to separate and purify.

The invention discloses a preparation method of 3,4-di(3,4,5-trifluorophenyl)-2,5-diphenylcyclopentyldienone, which comprises the following steps: by using 3,4,5-trifluorobenzaldehyde as an raw material, vitamin B1 (VB1) as a catalyst and water and ethanol as a mixed solvent, carrying out condensation reaction under alkaline conditions to obtain 1,2-di(3,4,5-trifluorophenyl)-2-hydroxyethyl ketone; by using anhydrous cupric sulfate and ammonium nitrate as a co-oxidant, oxidating the 1,2-di(3,4,5-trifluorophenyl)-2-hydroxyethyl-one in glacial acetic acid to obtain 3,4,5-ditrifluorophenylbenzil; and finally, reacting the 3,4,5-ditrifluorophenylbenzil and dibenzyl ketone in hot ethanol under alkaline conditions to synthesize the 3,4-di(3,4,5-trifluorophenyl)-2,5-diphenylcyclopentyldienone. The method has the advantages of cheap and accessible reaction raw materials, simple synthesis steps, short reaction time, mild reaction conditions and controllable reaction process, and is suitable for industrial production.

The present invention provides polyarylenes comprising as polymerized units a first monomer having two cyclopentadienone moieties and a second monomer having two or more alkyne moieties, wherein at least one alkyne moiety is directly bonded to silicon atoms. Such polyarylenes are suitable as dielectric materials in the manufacture of electronic devices.

The invention discloses a synthesis method of indenofluorene derivatives, isotruxene and mono-substituted isotruxene derivatives. The synthesis method of indenofluorene derivatives is characterized in that ester-group-containing compounds are formed through Diels-Alder reaction of methyl propiolate and indenocyclopentadienone, ethyl substituted indenofluorene derivatives are formed through hydrolysis, acid catalytic ring closing, carbonyl reduction and introduction of ethyl onto methylene, diketone compounds produced after ring closing react with lithium salt of 4, 4'-di-tert-butyl-2-brominated biphenyl, and then acidification and ring closing are conducted to obtain indenofluorene derivatives with spirofluorene. The synthesis method of isotruxene is characterized in that 1, 4-diphenyl-2, 3-di (carbalkoxy) fluorenone products are formed through the Diels-Alder reaction of indenocyclopentadienone and dimethyl acetylenedicarboxylate, isotruxene ketone is obtained through hydrolysis and acid catalytic ring closing and finally isotruxene is obtained; dibenzyl alcohol products are formed through the Diels-Alder reaction of 1, 4-butynediol and indenocyclopentadienone, and isotruxene is obtained through acetone protection, carbonyl reduction, acetone removal and polyphosphoric acid (PPA) ring closing; and oriented oxy substituted products, i.e. isotruxene ketone which is derived from isotruxene with methylene at a No.5 position being substituted, and corresponding diethyl substituted products are additionally obtained. The indenofluorene derivatives, the isotruxene and the mono-substituted isotruxene derivatives disclosed by the invention can be used in the field of organic electroluminescence and organic micro-molecule solar cells.

Acoustic wave sensors comprise: a piezoelectric layer, first and second electrodes arranged with the piezoelectric layer in a piezoelectric transducer circuit; and a polymeric sensing layer for adsorbing a gas-phase analyte, the adsorption of which analyte causes a change in resonant frequency of the piezoelectric transducer circuit, wherein the polymeric sensing layer comprises: (a) a polymer chosen from substituted or unsubstituted: polyarylenes comprising the reaction product of monomers comprising a first monomer comprising an aromatic acetylene group and a second monomer comprising a cyclopentadienone group; polyamides; polypyrazoles; or novolacs; or a cured product thereof; (b) a polymer chosen from substituted or unsubstituted: polyamic acids; or polyamic acid-polyimide copolymers; (c) a polymer formed from one or more monomers comprising a monomer comprising a polar group-substituted arylcyclobutene group, or a cured product thereof; or (d) a polymer comprising polymerized units of a monomer chosen from substituted or unsubstituted: maleimides; or norbomenes; or a cured product thereof. The acoustic wave sensors and methods of using such sensors find particular applicability in the sensing of gas-phase analytes.