Patent classifications
C07C49/323
METHOD FOR SYNTHESIZING DIBENZOCYCLOHEPTANE DERIVATIVES BY SERIES CYCLIZATION OF FREE RADICALS UNDER ELECTROOXIDATION CONDITIONS
Disclosed is a method for synthesizing dibenzcycloheptanone derivatives by series cyclization of free radicals under electrooxidation conditions, belonging to the technical field of organic synthesis. The disclosed method includes: taking o-propionyl biphenyl analogues and sodium benzenesulfinate analogues as raw materials, and electrifying and reacting the raw materials in an electrolytic cell to obtain dibenzocycloheptane derivatives. According to the application, benzenesulfinate anion is oxidized into benzenesulfonyl radical under the condition of constant current and electrolyte, then the radical attacks the α-position of alkynone reactant carbonyl to obtain an alkenyl radical, then the alkenyl radical is cyclized and added to another benzene ring by 7-endo-trig to realize the construction of seven-membered ring, and finally the dibenzocycloheptane analogue is obtained by deprotonation.
METHOD FOR SYNTHESIZING DIBENZOCYCLOHEPTANE DERIVATIVES BY SERIES CYCLIZATION OF FREE RADICALS UNDER ELECTROOXIDATION CONDITIONS
Disclosed is a method for synthesizing dibenzcycloheptanone derivatives by series cyclization of free radicals under electrooxidation conditions, belonging to the technical field of organic synthesis. The disclosed method includes: taking o-propionyl biphenyl analogues and sodium benzenesulfinate analogues as raw materials, and electrifying and reacting the raw materials in an electrolytic cell to obtain dibenzocycloheptane derivatives. According to the application, benzenesulfinate anion is oxidized into benzenesulfonyl radical under the condition of constant current and electrolyte, then the radical attacks the α-position of alkynone reactant carbonyl to obtain an alkenyl radical, then the alkenyl radical is cyclized and added to another benzene ring by 7-endo-trig to realize the construction of seven-membered ring, and finally the dibenzocycloheptane analogue is obtained by deprotonation.
Rare earth complex and light emitting element
A rare earth complex including a rare earth ion and a ligand coordinated with the rare earth ion and having a condensed polycyclic aromatic group. The condensed polycyclic aromatic group is a residue formed by removing a hydrogen atom from a condensed polycyclic aromatic compound represented by the following formula (I) or (II): ##STR00001##
Rare earth complex and light emitting element
A rare earth complex including a rare earth ion and a ligand coordinated with the rare earth ion and having a condensed polycyclic aromatic group. The condensed polycyclic aromatic group is a residue formed by removing a hydrogen atom from a condensed polycyclic aromatic compound represented by the following formula (I) or (II): ##STR00001##
High density turbine and diesel fuels from tricyclic sesquiterpenes
A method for converting cedarwood oil into high density fuels including, hydrogenating cedarwood oil in the presence of at least one hydrogenation catalyst to generate hydrogenated cedarwood oil, removing the hydrogenation catalyst from the hydrogenated cedarwood oil, purifying the hydrogenated cedarwood oil to produce a first high density fuel, isomerizing the first high density fuel in the presence of at least one acid catalyst catalyst to generate a hydrocarbon mixture including adamantanes, and distilling the adamantane mixture to produce a second alkyl-adamantane high density fuel.
High density turbine and diesel fuels from tricyclic sesquiterpenes
A method for converting cedarwood oil into high density fuels including, hydrogenating cedarwood oil in the presence of at least one hydrogenation catalyst to generate hydrogenated cedarwood oil, removing the hydrogenation catalyst from the hydrogenated cedarwood oil, purifying the hydrogenated cedarwood oil to produce a first high density fuel, isomerizing the first high density fuel in the presence of at least one acid catalyst catalyst to generate a hydrocarbon mixture including adamantanes, and distilling the adamantane mixture to produce a second alkyl-adamantane high density fuel.
Continuous Synthesis Method for 1, 1'-Bicyclic [1.1.1]Pentane-1,3-Diethyl Ketone Compounds
Provided is a continuous synthesis method for 1,1′-bicyclic[1.1.1]pentane-1,3-diethyl ketone compounds. The continuous synthesis method comprises: under the irradiation of a light source, continuously conveying raw material A and raw material B to a continuous reaction device for a continuous photochemical reaction to obtain 1,1′-bicyclic[1.1.1]pentane-1,3-diethyl ketone compounds, and controlling the reaction temperature in the continuous reaction device by a temperature control device during the continuous photochemical reaction. A propellane with substituents, as a reaction raw material, is subjected to the above photochemical reaction in the continuous reaction device to reduce the probability of its slow decomposition and deterioration under the irradiation, and greatly improve the conversion rate of the reaction material and product yield.
Continuous Synthesis Method for 1, 1'-Bicyclic [1.1.1]Pentane-1,3-Diethyl Ketone Compounds
Provided is a continuous synthesis method for 1,1′-bicyclic[1.1.1]pentane-1,3-diethyl ketone compounds. The continuous synthesis method comprises: under the irradiation of a light source, continuously conveying raw material A and raw material B to a continuous reaction device for a continuous photochemical reaction to obtain 1,1′-bicyclic[1.1.1]pentane-1,3-diethyl ketone compounds, and controlling the reaction temperature in the continuous reaction device by a temperature control device during the continuous photochemical reaction. A propellane with substituents, as a reaction raw material, is subjected to the above photochemical reaction in the continuous reaction device to reduce the probability of its slow decomposition and deterioration under the irradiation, and greatly improve the conversion rate of the reaction material and product yield.
Method for synthesizing dibenzocycloheptane derivatives by series cyclization of free radicals under electrooxidation conditions
Disclosed is a method for synthesizing dibenzcycloheptanone derivatives by series cyclization of free radicals under electrooxidation conditions, belonging to the technical field of organic synthesis. The disclosed method includes: taking o-propionyl biphenyl analogues and sodium benzenesulfinate analogues as raw materials, and electrifying and reacting the raw materials in an electrolytic cell to obtain dibenzocycloheptane derivatives. According to the application, benzenesulfinate anion is oxidized into benzenesulfonyl radical under the condition of constant current and electrolyte, then the radical attacks the a-position of alkynone reactant carbonyl to obtain an alkenyl radical, then the alkenyl radical is cyclized and added to another benzene ring by 7-endo-trig to realize the construction of seven-membered ring, and finally the dibenzocycloheptane analogue is obtained by deprotonation.
Method for synthesizing dibenzocycloheptane derivatives by series cyclization of free radicals under electrooxidation conditions
Disclosed is a method for synthesizing dibenzcycloheptanone derivatives by series cyclization of free radicals under electrooxidation conditions, belonging to the technical field of organic synthesis. The disclosed method includes: taking o-propionyl biphenyl analogues and sodium benzenesulfinate analogues as raw materials, and electrifying and reacting the raw materials in an electrolytic cell to obtain dibenzocycloheptane derivatives. According to the application, benzenesulfinate anion is oxidized into benzenesulfonyl radical under the condition of constant current and electrolyte, then the radical attacks the a-position of alkynone reactant carbonyl to obtain an alkenyl radical, then the alkenyl radical is cyclized and added to another benzene ring by 7-endo-trig to realize the construction of seven-membered ring, and finally the dibenzocycloheptane analogue is obtained by deprotonation.