The invention discloses a method for synthesizing di-tert-butylphenylphosphonium tetrafluoroborate, and belongs to the field of organic synthesis. The method comprises the following steps: in the anhydrous and anaerobic atmospheres, taking dichlorophenylphosphine as a raw material, after the reduction of diisobutyl aluminium hydride, reacting with tertiary butanol under the catalytic action of boron trifluoride, and then carrying out hydrolysis to generate the di-tert-butylphenylphosphonium tetrafluoroborate. Compared with the prior art, the method is high in yield and simple in aftertreatment, and is more applicable for industrial production.

Method for synthesizing di-tert-butylphenylphosphonium tetrafluoroborate

The invention discloses a 4'-(4-bromonaphthalen-1-yl)[1,1'-biphenyl]-4-carbonitrile and a synthesis method thereof, and belongs to the field of organic synthesis. The synthesis method comprises the following steps: 4-bromo-4-cyanobiphenyl is synthesized through a boronizing reaction of a raw material 4-bromobenzonitrile and bis(pinacolato)diboron and a Suzuki coupling reaction; and 4'-(naphthalen-1-yl)[1,1'-biphenyl]-4-carbonitrile is synthesized through a Suzuki coupling reaction of raw materials 4-bromo-4-cyanobiphenyl and 1-naphthylboronic acid, and finally undergoes a bromination reactionto synthesize the target compound. The synthesis method has the advantages of simplicity, high yield, and suitableness for industrial production, and the target compound can be used in the luminescentmaterials of organic electroluminescent devices as a host-guest doping material.

4'-(4-bromonaphthalen-1-yl)[1,1'-biphenyl]-4-carbonitrile and synthesis method thereof

The invention discloses a continuous casting epoxy resin composite panel device and belongs to the field of composite equipment. The casting device comprises a box, a variable-speed motor, a speed reducer and a discharging pipe, wherein the variable-speed motor is connected with the speed reducer. The device is characterized in that the discharging pipe is a hollow cone, a discharge outlet is formed in the top end of the cone, and the bottom of the cone is connected with the speed reducer through a mechanical sealing part and a bearing; a screw rod is installed inside the discharging pipe, and the diameter of the screw rod becomes smaller gradually from the bottom of a cavity body of the cone to the discharge outlet; a feed inlet is formed in the lower end of the bottom of the discharging pipe, a vacuumizing pipeline is arranged at the upper end of the bottom of the discharging pipe, and a pipeline for adding accelerants is installed at the upper end of the middle of the discharging pipe; the outer wall of the discharging pipe is a jacket layer, and the jacket layer is provided with a water inlet and a water outlet. The device is simple in structure, low in energy consumption, high in casting efficiency, stable in quality and especially suitable for industrial application and popularization of epoxy resin composites.

Hua Lin

Papers

Method for synthesizing di-tert-butylphenylphosphonium tetrafluoroborate

4'-(4-bromonaphthalen-1-yl)[1,1'-biphenyl]-4-carbonitrile and synthesis method thereof

Continuous casting epoxy resin composite panel device