Industrial pollution-free production method of borane ester complex

A pollution-free, borane ether technology, which is applied in the field of industrial pollution-free production of borane ether complexes, can solve the problems of increased cost of wastewater treatment, agglomeration, and unsuitability for industrial production, and achieve the goal of protecting water resources and soil Effect

Inactive Publication Date: 2014-06-25
HUABIN BIO TECH
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Problems solved by technology

[0005] The existing preparation method will cause agglomeration in the early feeding and later reproduction, which is not suitable for industrial production. A large amount of waste water is

Method used

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  • Industrial pollution-free production method of borane ester complex

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Experimental program
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Embodiment Construction

[0018] (1) dropwise adding boron trifluoride ether in the reactor;

[0019] (2) Diethylene glycol dimethyl ether is used as a solvent in the reactor, and sodium borohydride is added to react with the boron trifluoride ether added dropwise;

[0020] (3) The diborane gas produced by the reaction of step (2) enters the absorption kettle after being condensed by a condenser (-25~-30 degrees Celsius);

[0021] (4) The cooled diborane gas described in step (3) reacts with tetrahydrofuran or dimethyl sulfide in the absorption tank to form a diborane complex.

[0022] Before step (2) adds sodium borohydride, calcium oxide is added earlier. Remove water from diglyme to prevent clumping.

[0023] A cooling circulation system is arranged between the reaction kettle and the absorption kettle to maintain the temperature of the reaction kettle and the absorption kettle between 10-20 degrees Celsius. The function of the cooling circulation system is as follows:

[0024] The reaction ke...

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Abstract

The invention discloses an industrial pollution-free production method of a borane ester complex. The industrial pollution-free production method comprises the following steps: (1) dropwise adding boron trifluoride diethyl etherate to a reaction kettle; (2) adding sodium borohydride to react with the added boron trifluoride diethyl etherate in the reaction kettle by using diethylene glycol dimethyl ether as a solvent; (3) condensing diborane produced by the reaction in the step (2) by virtue of a condenser, and then transferring into an absorption kettle; (4) enabling the cooled diborane gas obtained in the step (3) to react with tetrahydrofuran or dimethylsulfide in the absorption kettle to obtain a borane complex. By adopting the industrial pollution-free production method of the borane ester complex, the problem of caking during blanking for production or reproduction in later can be solved, and an another problem due to wastewater treatment can also be solved; the industrial pollution-free production method is suitable for industrial production and can be used for effectively protecting the water resource and soil.

Description

technical field [0001] The invention belongs to the field of borane ether complex production, and relates to an industrial pollution-free production method of borane ether complex. Background technique [0002] The general formula of traditional borane ether complexes is as follows (publication number is: CN101479280A): [0003] [0004] The method for asymmetric reduction of prochiral ketone, imine or oxime includes additional use of chiral catalyst and chiral oxazoboridine catalyst. At least one alkali metal borohydride is also added as a stabilizer. [0005] The existing preparation method will cause agglomeration in the early feeding and later reproduction, which is not suitable for industrial production. A large amount of waste water is generated in the production process. Due to the use of various catalysts and stabilizers, the cost of waste water treatment is greatly increased, and soil and water are also damaged. resource. Contents of the invention [0006] T...

Claims

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Application Information

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IPC IPC(8): C07D307/06C07C319/20C07C321/04C01F11/22
CPCC07D307/06C01F11/22C07C319/20C07C321/14
Inventor 顾爱华
Owner HUABIN BIO TECH
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