Synthesis method of diphenylcarbinol decanoate

A technology for obtaining benzyl decanoate and benzyl decanoate, which is applied in the field of synthesis of dimethyl decanoate and achieves the effects of wide range of uses, no environmental pollution and low production cost

Inactive Publication Date: 2011-06-29
XUZHOU B&C CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many reports on capric acid ester related technologies in the existing patent literature, focusing on the selection of catalysts and the post-

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 20g of capric acid, 24g of diphenylmethanol, 0.012g of tin dioxide, and 1.0g of activated carbon with an electronic balance, add them into a four-neck flask, feed nitrogen, turn on the stirrer, gradually raise the temperature, and keep the temperature at 120-130°C. 6h, after distilling out the water generated by the reaction, after the heat preservation is completed, transfer to the dealcoholization kettle, keep the heat for 0.5h at a temperature of 120°C and a vacuum of 0.02MPa, cool down to 60-70°C and filter to obtain benzhydryl caprate. The esterification rate was 99.5%.

Embodiment 2

[0020] Weigh 20g of capric acid, 32g of diphenylmethanol, 0.256g of stannous chloride, and 1.0g of activated carbon with an electronic balance, add them to a four-neck flask, feed nitrogen, turn on the stirrer, and gradually raise the temperature, keeping the temperature at 130-140°C. React for 5 hours, distill out the water generated by the reaction, transfer to the dealcoholization kettle after the heat preservation, keep the heat for 0.5h under the condition of 140°C and 0.8MPa vacuum, cool down to 60-70°C and filter to obtain benzhydryl caprate , The esterification rate is 99.5%.

Embodiment 3

[0022] Weigh 20g of capric acid, 28g of diphenylmethanol, 0.0224g of stannous oxalate, and 1.0g of activated carbon with an electronic balance, add them to a four-necked flask, feed nitrogen, turn on the stirrer, and gradually raise the temperature to keep the temperature at 125-135°C. After 7 hours, the water generated by the reaction was distilled off, and after the heat preservation was completed, it was transferred to the dealcoholization kettle. The temperature was 130°C, and the vacuum degree was 0.2MPa. The esterification rate was 99.8%.

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Abstract

The invention discloses a synthesis method of diphenylcarbinol decanoate. The synthesis method is characterized in that esterification is carried out on capric acid and diphenylcarbinol which are utilized as raw materials at the atmosphere of nitrogen in the presence of an organic or inorganic tin catalyst, then dealcoholization is carried out after the esterification is completed, and the diphenylcarbinol decanoate is obtained after filtration, wherein the weight of the organic or inorganic tin catalyst is 0.05%-0.8% of that of the added diphenylcarbinol. The synthesis method has the characteristics of one-step esterification and simple process and equipment; and the recovered alcohol can be used as a solvent.

Description

technical field [0001] The invention relates to a method for preparing silicate by using benzyl alcohol through esterification, in particular to a synthesis method of capric acid xylyl alcohol. Background technique [0002] Capric acid is a saturated fatty acid with a wide range of existence. Its main function is to produce capric acid ester products, and capric acid ester is widely used as spices, humectants, plasticizers and food additives, and is widely used in organic synthesis. . The hydroxyl group of benzhydryl alcohol is at the α position, the structure is symmetrical, and it has a wide range of uses. The product obtained by esterification with capric acid has a stable structure and is suitable for various industrial fields. [0003] Existing patent documents have many related technologies reporting capric acid esters, focusing on the selection of catalysts and the post-treatment process of alcohols. However, there are no relevant patents to report on the use of benz...

Claims

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Application Information

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IPC IPC(8): C07C69/24C07C67/08
Inventor 傅志伟贺宝元吴涛周玉莱石俊薛恩鹏王国华
Owner XUZHOU B&C CHEM CO LTD
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