5 results about "Butyl chloride" patented technology

The invention belongs to the technical field of organic synthesis, and particularly relates to a method for synthesizing 2-chlorobutane. According to the method, sec-butyl alcohol and hydrogen chloride are used as raw materials, the fly ash-based catalyst is adopted for continuous reaction in the fixed bed reactor to synthesize 2-chlorobutane, and the purity of 2-chlorobutane exceeds 99.5% and the yield of 2-chlorobutane is 98% through continuous synthesis. Besides, the method for continuously synthesizing the 2-chlorobutane by the fixed bed reactor is coupled with the kettle type reaction, so that the waste hydrochloric acid generated in the continuous synthesis of the 2-chlorobutane by the fixed bed reactor can be effectively utilized, and the method and the kettle type reaction can share a set of post-treatment system, so that the equipment investment of a construction project is reduced.

The application provides a synthesis method of 1,2,3,4-tetrachlorobutane and belongs to the technical field of organic synthesis. The synthesis method comprises the following steps: mixing 1,3-butadiene and halogenated alkane in a protective gas environment to obtain a mixture; introducing liquid chlorine into a sealed environment filled with the protective gas, and then adding the mixture into the liquid chlorine dropwisely at 30-40 DEG C to obtain 1,2,3,4-tetrachlorobutane. The reaction environment in the whole synthesis process is safe, a large amount of waste water is not generated, a large amount of chlorine waste gas is not generated, the raw material conversion rate is high, and the product yield is high and stable.

The application discloses a production method of preparing tetrabutyl tin with single solvent, and particularly relates to the technical field of organic compound synthesis. The application solves the technical problems of large solvent loss, high energy consumption of separation, complex water removal process and low product yield in the traditional THF and toluene mixed solvent process. In the application, isopropyl ether is used as single solvent, magnesium and chlorobutane are used to generate butylmagnesium chloride in the isopropyl ether; then, tin tetrachloride is dropped into the mixture, and tetrabutyl tin and anhydrous magnesium chloride are generated by continuous stirring reaction; hydrochloric acid is added to the system to dissolve the solid precipitate, and the upper organic phase is obtained by standing and separating; finally, the isopropyl ether is recovered by normal pressure distillation, and the tetrabutyl tin is obtained by reduced pressure distillation. The application realizes efficient recovery and recycling of the solvent by using the low boiling point and water insolubility of the isopropyl ether; and the molecular sieve drying step is omitted by using the in-situ water absorption property of the by-product anhydrous magnesium chloride.

The invention provides a preparation method of 2, 2 '-di (diphenylphosphino methylene)-1, 1'-biphenyl and a derivative thereof. The preparation method comprises the following steps: (1) mixing triphenylphosphine with a first solvent to obtain a first mixed solution; tert-butyl chloride and a second solvent are mixed to obtain a second mixed solution; mixing 2, 2 '-bis (halogenated methyl)-1, 1'-biphenyl and / or a derivative thereof with a third solvent to obtain a third mixed solution; (2) enabling the first mixed solution to flow through a metal lithium column, enabling the first mixed solution and the second mixed solution to enter a first micro-mixer, and then enabling the first mixed solution and the second mixed solution to enter a first micro-channel reactor for reaction to obtain a first reaction solution; (3) the first reaction solution and the third mixed solution enter a second micro-mixer and then enter a second micro-channel reactor for reaction, and 2, 2 '-bis (diphenylphosphino methylene)-1, 1'-biphenyl and / or derivatives thereof are obtained, the preparation method is short in reaction time and high in yield.