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Compound with lychee aroma and preparation method thereof and daily essence

A compound and aroma technology, applied in the field of spices, to achieve the effect of strong lychee aroma characteristics, stable and long-lasting aroma

Active Publication Date: 2022-07-08
DONGGUAN BOTON FLAVORS & FRAGRANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the essence with lychee aroma can be obtained through the deployment of different substances, there is no single compound with lychee aroma characteristics to meet the needs of the fragrance field

Method used

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  • Compound with lychee aroma and preparation method thereof and daily essence
  • Compound with lychee aroma and preparation method thereof and daily essence
  • Compound with lychee aroma and preparation method thereof and daily essence

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Experimental program
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preparation example Construction

[0031] In one aspect of the present invention, there is also provided a preparation method of the above-mentioned compound with litchi aroma, comprising the following steps:

[0032] (1) mix 2-hydroxypropionic acid and methanol with an organic solvent, carry out esterification under the action of a catalyst, prepare methyl 2-hydroxypropionate, wherein the structural formula of 2-hydroxypropionic acid is

[0033] (2) 2-hydroxy propionate methyl ester and propionyl chloride are mixed and reacted to prepare 2-propionyloxy methyl propionate, wherein the structural formula of propionyl chloride is The structural formula of methyl 2-hydroxypropionate is and

[0034] (3) 2-propionyloxy methyl propionate and citronellol are mixed and reacted under the conditions of catalyst and heating to prepare the compound with litchi aroma, wherein the structural formula of 2-propionyloxy methyl propionate is The structural formula of citronellol is

[0035] The present invention has wid...

Embodiment 1

[0059] Embodiment 1 has the preparation of the compound of litchi aroma

[0060] The preparation process of preparing the compound with litchi aroma in the present embodiment is as follows:

[0061] (1) Preparation of methyl 2-hydroxypropionate

[0062]

[0063] Methanol (200g), p-toluenesulfonic acid (TsOH, 5.4g) and cyclohexane (CYH, 500mL) were successively added to the three-necked flask, the temperature was raised to 80°C, and then 2-hydroxypropionic acid (180g) was slowly added dropwise and heated. Reflux dehydration reaction for 4h. Vacuum distillation was carried out at 300 Pa, and the fractions with a mother liquor temperature of 25°C to 35°C were collected to obtain a colorless and transparent liquid, namely methyl 2-hydroxypropionate (187 g).

[0064] (2) Preparation of methyl 2-propionyloxy propionate

[0065]

[0066] The methyl 2-hydroxypropionate (187g) prepared above was placed in a three-necked flask, propionyl chloride (167g) was added dropwise, and ...

Embodiment 2

[0079] Embodiment 2 has the preparation of the compound of litchi aroma

[0080] (1) Methanol (500g), p-toluenesulfonic acid (TsOH, 10g) and cyclohexane (CYH, 1200mL) were successively added to the three-necked flask, the temperature was raised to 85°C, and then 2-hydroxypropionic acid (360g) was slowly added dropwise. , heated to reflux for dehydration reaction for 5h. Vacuum distillation was carried out at 350 Pa, and the fractions with a mother liquor temperature of 25° C. to 35° C. were collected to obtain a colorless and transparent liquid, namely methyl 2-hydroxypropionate (380 g).

[0081] (2) The methyl 2-hydroxypropionate (380g) prepared above was placed in a three-necked flask, and propionyl chloride (402g) was added dropwise, and the reaction was carried out at room temperature for 3h. Then carry out vacuum distillation under 260Pa, collect the fractions whose mother liquor temperature is 70℃~85℃, obtain colorless transparent liquid, namely methyl 2-propionyloxypro...

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Abstract

The invention relates to the field of fragrances, in particular to a compound with lychee aroma, a preparation method thereof and a daily essence. The present invention prepares a compound with lychee aroma, which has the structure represented by formula (I). Through research, it is found that the above-mentioned compounds with lychee aroma have significant lychee aroma, high aroma intensity, and stable and long-lasting aroma. The present invention also provides a method for preparing the above-mentioned compound with litchi aroma. The raw materials for preparing the compound with litchi aroma are easy to obtain, simple to operate, and suitable for wide popularization and application. The present invention further provides a daily fragrance comprising the above-mentioned compound with lychee aroma.

Description

technical field [0001] The invention relates to the field of spices, in particular to a compound with lychee aroma, a preparation method thereof and a daily essence. Background technique [0002] The field of fragrances requires new chemicals to impart different fragrance characteristics to fragrances. Although the essence with lychee aroma can be obtained through the preparation of different substances, there is no single compound with lychee aroma characteristics to meet the needs of the field of spices. SUMMARY OF THE INVENTION [0003] Based on this, the present invention provides a compound with lychee aroma, a preparation method thereof, and a daily essence. The compound can present a significant lychee aroma, and the aroma is stable and lasting. [0004] One aspect of the present invention provides a compound with litchi aroma, which has the structure shown in formula (I): [0005] [0006] In one aspect of the present invention, there is also provided a prepa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/67C07C67/08C07C69/675C07C67/14C07C67/03C11B9/00
CPCC07C69/67C07C67/08C07C67/14C07C67/03C11B9/0015C07C69/675
Inventor 蔡国祥关俊健钟能帮吴奇林华创冯娇
Owner DONGGUAN BOTON FLAVORS & FRAGRANCES
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