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O-alkoxy cyclohexanol dehydrogenation method

A technology of o-alkoxyl and cyclohexanol, which is applied in the fields of organic dehydrogenation, chemical instruments and methods, and the preparation of organic compounds. It can solve the problems of many and complicated side reactions, achieve selectivity improvement, and prolong service life. Effect

Inactive Publication Date: 2015-10-28
YUEYANG CHANGDE CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, some of these reactions are more complicated, and the side reactions are more and unavoidable.

Method used

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  • O-alkoxy cyclohexanol dehydrogenation method
  • O-alkoxy cyclohexanol dehydrogenation method
  • O-alkoxy cyclohexanol dehydrogenation method

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Embodiment Construction

[0007] Specific embodiments of the present invention will be described in detail below. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0008] The invention provides a dehydrogenation method of o-alkoxycyclohexanol, the method comprising: under catalytic dehydrogenation conditions, o-alkoxycyclohexanol and a solvent and containing the active component is Group VIII metal element The dehydrogenation catalyst is contacted, and an acidic additive is added; wherein, the solvent is at least one selected from ketones, alcohols and water; the acidic additive is selected from organic acids, inorganic acids and Lewis acids at least one of .

[0009] According to the present invention, the structural formula of described o-alkoxy cyclohexanol is as follows:

[0010] Among them, R represents an alkyl group, such as C 1 -C 10 straight or branched...

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Abstract

The invention discloses an o-alkoxy cyclohexanol dehydrogenation method. The method includes the steps that under the catalytic dehydrogenation condition, o-alkoxy cyclohexanol is made to be in contact with a solvent and a dehydrogenation catalyst containing an active component being group VIII metal element, and an acid additive is added; the solvent is at leas one of ketones, alcohols and water; the acid additive is at least one of organic acid, inorganic acid and lewis acid. By means of the technical scheme, the reactant conversion rate can be increased, and the selectivity of a target product can be improved.

Description

technical field [0001] The invention relates to a dehydrogenation method of o-alkoxy cyclohexanol. Background technique [0002] At present, the preparation of catechol derivatives is usually synthesized by using catechol as a raw material. The target product catechol derivatives are widely used in many fields such as medicine, chemical industry and fuel. The existing methods synthesize catechol The derivatives of pyrocatechol usually include: 1) take catechol as raw material and carry out Williamson reaction synthesis with alkyl halide; 2) use catechol as raw material and carry out alkylation reaction with alcohols; 3) pyrocatechol is The starting material is reacted with methyl esters. However, some of these reactions are more complicated, and the side reactions are more and unavoidable. The cyclo-o-methoxycyclohexanol containing ether bonds can directly prepare catechol derivatives through dehydrogenation. This reaction has the technical characteristics of high reaction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/23C07C41/18C07C43/253C07B35/04
CPCC07C41/18C07B35/04C07C2601/14
Inventor 彭焕英何嘉勇蒋卫和屈铠甲
Owner YUEYANG CHANGDE CHEM IND