Low temperature preparation method of boron trifluoride dimethyl carbonate complex compound

Abstract

The invention belongs to a chemical engineering product, a boron trifluoride dimethyl carbonate complex compound, in particular relates to a low temperature preparation method of the boron trifluoride dimethyl carbonate complex compound. The preparation method comprises the following steps: in a gas generating container, using boric acid and anhydrous hydrofluoric acid as raw materials, dehydrating and generating boron trifluoride gas, and sulfur trioxide is used as an dehydrating agent; in a purification container, purifying the boron trifluoride gas generated through concentrated sulphuric acid; in a complexing container, performing a complexing reaction of the purified boron trifluoride gas and the dimethyl carbonate; and in a filter, cooling down and crystallizing the liquid reactant of the complexing reaction, and the solid gathered is the boron trifluoride dimethyl carbonate complex compound. The technical scheme provided by the invention enables the temperature of the gas generating reaction and complexing reaction to be close to the room temperature, decreases energy consumption during production process and is low-carbon and environment friendly; the production process is safer and more controllable; and the boron trifluoride dimethyl carbonate complex compound is a solid white crystal, wherein the content of boron trifluoride is 40-43 percent in weight and the property of the boron trifluoride is stable.

Description

technical field [0001] The invention belongs to chemical product boron trifluoride dimethyl carbonate complex, in particular to a low-temperature preparation method of boron trifluoride dimethyl carbonate complex. Background technique [0002] Boron trifluoride complex is a very active catalyst, which can be used in various organic synthesis reactions, especially in the synthesis process of cephalosporin antibacterial drugs, because the introduction of boron trifluoride complex shortens the The reaction time of the original product greatly increases the yield of the original product. The boron trifluoride dimethyl carbonate complex is currently the most effective catalyst in the chemical synthesis process of cephalosporins modified at the C3 position, and is safe and convenient to use and has no pollution to the environment. [0003] The production process of boron trifluoride dimethyl carbonate complex is at present: [0004] Sulfuric acid, boric acid and hydrofluoric aci...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that both the gas-making reaction and the complexation reaction need to be carried out at a relatively high temperature, the energy consumption is large and the risk is high. In order to overcome the above shortcomings, a boron trifluoride dimethyl carbonate complex is provided. Low temperature preparation method of compound