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Production method for chloropinacoline

A production method and chlorine technology, which are applied in chemical instruments and methods, preparation of organic compounds, preparation of carbon-based compounds, etc., can solve the problems of low product purity and many by-products, and achieve high purity, high product yield, and high production efficiency. Efficient effect

Inactive Publication Date: 2018-02-13
江苏嘉晟化工科技有限公司
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Problems solved by technology

[0002] Monochloropinacolone, also known as 1-chloropinacolone, is an organic raw material with a molecular formula of C 6 h 11 ClO, with a molecular weight of 134.6039, can be used as an intermediate for medicine, pesticides, etc. At present, the preparation method of chloropinatone has many by-products and the product purity is low

Method used

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  • Production method for chloropinacoline

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Embodiment 1

[0015] Present embodiment relates to a kind of production method of chlorpinacolone, such as figure 1 As shown, it specifically includes the following steps:

[0016] 1) Chlorination: The pinacolone produced by the pinacolone production line is pumped into the chlorine reaction kettle, and methanol is introduced as a chlorination reaction catalyst at the same time, the pinacolone is mixed with methanol, cooled with a refrigerated brine jacket for 24 hours, and controlled When the temperature is 0°C, connect the chlorine gas cylinder with the buffer tank with a copper tube, start the reactor to stir, open the valve, and check whether the rotor in the flow meter floats up, check for leakage with ammonia water, and chlorine gas passes through the buffer tank to react with chlorine. After 24 hours of reaction in the kettle, chloropinacolone can be obtained. The construction project is equipped with 4 chlorine reactors, each 2000L, and 4 reactors are operated at the same time. A v...

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Abstract

The invention provides a production method for chloropinacoline, which includes the following steps: after pinacolone and chlorine are subjected to chlorination reaction under the catalysis of methanol, methanol is recovered by desolvation, so that crude chloropinacoline is obtained; and the crude chloropinacoline is kept still to be layered, so that a lower final product, chloropinacoline, is obtained. The advantages of the production method for chloropinacoline are as follows: the yield of product is high, the purity is high, and the efficiency of production is high.

Description

technical field [0001] The invention relates to a production method of chloropinacolone, which belongs to the technical field of organic synthesis. Background technique [0002] Monochloropinacolone, also known as 1-chloropinacolone, is an organic raw material with a molecular formula of C 6 h 11 ClO, with a molecular weight of 134.6039, can be used as an intermediate for medicines and pesticides. At present, the preparation method of chloropinatone has many by-products and the product purity is low. Contents of the invention [0003] For the defects in the prior art, the purpose of this invention is to provide a kind of production method of chloropinacolone. [0004] The present invention is achieved through the following technical solutions: [0005] The invention provides a kind of production method of chloropinacolone, it comprises the steps: [0006] After the chlorination reaction of pinacolone and chlorine gas under the catalysis of methanol, the methanol is rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/63C07C49/16
CPCC07C45/63C07C49/16
Inventor 陈培杨志刚卫亚军于蓓蓓
Owner 江苏嘉晟化工科技有限公司
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