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Preparation method for synthesizing isobornyl acetate by esterification of camphene and acetic acid

A technology for isobornyl acetate and chemical synthesis, which is applied in the preparation of organic compounds, the preparation of carboxylic acid esters, chemical instruments and methods, etc., to achieve the effects of mild reaction conditions, high conversion rate and high activity

Active Publication Date: 2013-04-10
SHANGHAI HUAYI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention adopts synthetic molecular sieve as catalyst, has mild reaction conditions, high catalyst activity, good selectivity, and is environmentally friendly, effectively solves the problems existing in the existing process, and provides a new effective way for synthesizing isobornyl acetate. Effectively solve the problems existing in the prior art

Method used

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  • Preparation method for synthesizing isobornyl acetate by esterification of camphene and acetic acid
  • Preparation method for synthesizing isobornyl acetate by esterification of camphene and acetic acid

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Experimental program
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Embodiment 1～5

[0013] 100 grams of the synthesized molecular sieve catalysts were respectively loaded into a fixed-bed tubular reactor, and amphene and acetic acid raw materials were injected into the reactor in a certain proportion with a metering pump to carry out normal pressure reaction. The specific reaction conditions and reaction results are shown in Table 1.

[0014] Table 1

[0015]

Embodiment 6～10

[0017] In 500 milliliters of stainless steel stirred reactors, respectively add 300 grams of mixed raw materials and a certain amount of catalysts (based on the reaction raw materials) by a certain acetic acid / amphene mol ratio, then heat up and carry out normal pressure reaction, specific reaction conditions and The reaction results are shown in Table 2.

[0018] Table 2

[0019]

[0020] Can find out from above-mentioned table 1, table 2: owing to having selected highly active catalyzer, the selectivity of the isobornyl acetate that preparation method of the present invention makes is up to 95.6%, and the camphene conversion rate is up to 92.6%, and the The preparation method has mild reaction conditions and is environmentally friendly, and can be widely used in the industrial synthesis of isobornyl acetate.

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Abstract

The invention relates to a preparation method for synthesizing isobornyl acetate by esterification of camphene and acetic acid. A synthesized molecular sieve is taken as a catalyst; the raw materials camphene and acetic acid are proportionally added into a fixed bed tubular reactor or reaction kettle respectively for reaction to obtain the target product isobornyl acetate. The invention has the advantages of mild reaction conditions, high catalyst activity, high selectivity of isobornyl acetate and is environmentally friendly and can be widely applied to industrial large-scale production of isobornyl acetate.

Description

technical field [0001] The invention relates to a preparation method for synthesizing isobornyl acetate by esterification of camphene and acetic acid. Background technique [0002] Isobornyl acetate is an important intermediate in the process of synthesizing camphor, which is mainly obtained through esterification with camphene and acetic acid as raw materials. Camphor is a kind of terpenoid compound, which belongs to bicyclic monoterpene, and is widely used in daily life. Due to the shortage of natural camphor, the synthesis of camphor has been paid more and more attention, and the synthesis of its intermediate isobornyl acetate is also more and more important. [0003] Industrially, sulfuric acid, ionic membrane, cation exchange resin, etc. are often used as catalysts for the synthesis of isobornyl acetate from camphene and acetic acid. The traditional process using sulfuric acid as a catalyst has disadvantages such as serious equipment corrosion, large environmental poll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/14C07C67/04B01J29/40B01J29/70B01J29/08B01J29/85
Inventor 宁春利刘金龙张琪均张春雷
Owner SHANGHAI HUAYI GRP CO
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