Novel method for preparing high-proportion trans, trans-4-(4'-alkyl cyclohexyl) cyclohexyl alcohol liquid crystal intermediate compound

A technology for alkyl rings and compounds, which is applied in the field of compound preparation, can solve problems such as unfavorable industrial production, no mention of cyclohexanol preparation, and difficulties in realization, and achieve suitable processing methods, short process routes, and high-quality products Effect
CN101704724BActive Publication Date: 2013-04-24YANTAI DERUN LIQUID CRYSTAL MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANTAI DERUN LIQUID CRYSTAL MATERIALS
Publication Date
2013-04-24

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Abstract

The invention relates to a method for preparing a high-proportion trans, trans-4-(4'-alkyl cyclohexyl) cyclohexyl alcohol liquid crystal intermediate compound. The method comprises the following steps of: dissolving trans-4-alkyl cyclohexyl cyclohexyl ketone in an organic solvent (A); dissolving reductant boron hydride in an organic solvent (B); mixing the two obtained mixed solution; carrying out reduction reaction; carrying out transposition reaction by using Lewis acid; then carrying out acid hydrolysis; carrying out extraction by using a solvent; merging organic phases; washing the solution until the pH value is 7; adding desiccant to dry obtained products; removing the desiccant by filtration; and removing the solvent under low vacuum to obtain the high-proportion trans, trans-4-(4'-alkyl cyclohexyl) cyclohexyl alcohol liquid crystal intermediate compound. The method is simple in process and high in yield, and is favorable for realizing scale production.
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Description

technical field

[0001] The present invention relates to a new preparation method of a liquid crystal intermediate compound, more specifically to a new preparation method of a trans, trans-4-(4'-alkylcyclohexyl) cyclohexyl alcohol liquid crystal intermediate compound, belonging to the compound Preparation technology field. Background technique

[0002] Thin film transistor liquid crystal display (TFT-LCD) is the most important type of liquid crystal display (LCD). Its output value and influence occupy a pivotal position in the LCD family and are widely used in televisions, notebook computers, monitors, and mobile phones. And other aspects, and now, LCD TV has become the mainstream of the market.

[0003] Liquid crystal material is one of several major materials constituting a liquid crystal display (LCD), and liquid crystal material plays a very important role in it, and with different display modes, the required liquid crystal material is also different. In order to meet t...

Claims

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