Methyl Cinnamate

Methyl cinnamate is an important organic compound with a wide range of uses. In the field of fragrances, it is often used as a fragrance to add to various products due to its unique aroma. For example, in daily cosmetics, it can give products a pleasant fragrance and increase their attractiveness; in the food industry, it can add unique flavor to food and enhance taste enjoyment.
In the pharmaceutical and chemical industry, methyl cinnamate is an important synthetic raw material. It can be produced through a series of chemical reactions. A variety of biologically active compounds are used in drug research and development. The synthesis path of many drugs uses it as a starting material or key intermediate to help obtain drug molecules with specific structures and functions.
In addition, in the field of materials science, it also has applications. It can participate in the synthesis of certain polymers and improve the properties of materials, such as improving the stability and processing properties of materials.
Its position in the field of organic synthesis is also crucial, providing a variety of reaction possibilities for organic synthetic chemists, assisting in the synthesis of various complex and special functions of organic molecules, and then promoting scientific research and technological development in related fields.

Methyl cinnamate is a kind of organic compound. Its physical properties are particularly important, let me explain in detail.
Looking at its properties, at room temperature, methyl cinnamate is a colorless to light yellow oily liquid. Under sunlight, it can be seen that it is clear and shiny. Smell it, it has a fragrant aroma, just like the unique charm of cinnamon, which permeates the surroundings and is pleasing.
When it comes to the melting point, its melting point is about -12 ° C, which means that it can still maintain a liquid state in an environment slightly lower than room temperature. The boiling point is 260-262 ° C, and the higher boiling point indicates that a considerable amount of heat is required to convert it into a gaseous state, which shows that it has good chemical stability under conventional heating conditions.
In addition to solubility, methyl cinnamate can be soluble in many organic solvents, such as ethanol and ether. In ethanol, it can be rapidly dispersed to form a uniform solution, just like a fish entering water, fusing infinitely. However, it is difficult to dissolve in water. When water and methyl cinnamate meet, they are like oil and water repelling each other, and each is a layer. This is due to the difference in molecular structure and polarity between the two. < Br >
In terms of density, it is about 1.091-1.096 g/cm3, which is slightly larger than the density of water by 1 g/cm3. If it is placed in a container with water, it can be seen that it sinks to the bottom of the water, just like a pearl falling into the abyss.
The vapor pressure is lower, and in a normal temperature environment, the volatilization is relatively slow, and it is not easy to spread rapidly in the air. This characteristic allows its odor to persist in a specific space for a long time.
These physical properties have a profound impact on the application of methyl cinnamate in various fields such as fragrance, medicine, and chemical industry, which is the root of its effectiveness.

Methyl cinnamate is a kind of organic compound. Looking at its physical properties, it is a colorless to light yellow liquid at room temperature, and has a pleasant aroma like fruit and flowers. Its boiling point is about 260 ° C, the melting point is about -3 ° C, and the density is nearly 1.091g/cm ³. It is insoluble in water, but it can be miscible with organic solvents such as ethanol and ether.
When it comes to chemical properties, methyl cinnamate contains two key functional groups: carbon-carbon double bonds and ester groups. The carbon-carbon double bond makes it have significant addition reaction activity. For example, it can react with hydrogen under suitable catalysts and conditions, and the double bond breaks to form corresponding saturated products. When it comes into contact with halogen elements, like bromine water, it can also be rapidly added, causing bromine water to fade.
The presence of ester groups gives it hydrolytic properties. In acidic media, hydrolysis occurs to generate cinnamic acid and methanol, which is a reversible process. In alkaline environments, hydrolysis is more thorough, generating cinnamate and methanol. Because bases can react with the generated acids, the balance moves towards hydrolysis.
In addition, due to its structure containing benzene rings, affected by the conjugation system of benzene rings, methyl cinnamate can also participate in substitution reactions on benzene rings, etc., showing a rich and diverse chemical behavior, which is widely used in the field of organic synthesis.

The preparation method of methyl cinnamic acid ester has various paths. First, it can be obtained by esterification reaction. Cinnamic acid and methanol are taken as raw materials and combined with the help of suitable catalysts. Sulfuric acid, p-toluenesulfonic acid, etc. are often used as catalysts. Under heating conditions, the carboxyl group of cinnamic acid interacts with the hydroxyl group of methanol to remove a molecule of water and then form methyl cinnamic acid ester. This method is more common, but it is necessary to pay attention to the control of reaction conditions to ensure high yield.
Second, it can also be prepared by the acyl chloride method. First, cinnamic acid is converted into cinnamic acid chloride, and the carboxyl group is converted into an acyl chloride group by reagents such as dichlorosulfoxide. Subsequently, cinnamyl chloride meets methanol, and in the presence of acid binding agent, the two react, and the hydroxyl group of methanol replaces the chlorine atom of acid chloride to obtain methyl cinnamate. This method has high reactivity, but the reagents used are mostly corrosive, and the operation needs to be double cautious.
Third, the ester exchange method is also one of the preparation methods. Ester substances such as ethyl cinnamate are selected and placed in the reaction system together with methanol. Under the catalysis of a specific catalyst, the ester groups are exchanged, and the methyl group of methanol replaces part of the original ester group to form methyl cinnamate. The advantage of this approach is that the selection of raw materials is relatively convenient, and the reaction conditions are relatively mild.
All kinds of preparation methods have their own advantages and disadvantages. In actual preparation, it is necessary to carefully choose the appropriate method according to many factors such as the availability of raw materials, cost considerations, and product purity requirements.

The price of methyl cinnamate in the market often varies depending on the purity of the product, the quantity and the supply and demand of the market. Its price fluctuates, and it is difficult to determine the number. However, roughly speaking, if it is an ordinary commercial product, the price per kilogram may be between tens of yuan and hundreds of yuan. If its purity is extremely high and it meets the standard used in scientific research, the price must be high, or more than 1,000 yuan per kilogram. And if the purchase volume is quite large, the merchant may give a discount to promote the sale, and the price will drop slightly. The relationship between supply and demand in the market is particularly huge. If demand exceeds supply, the price will rise; if supply exceeds demand, the price will decline. And this price also changes with the market, or varies from day to day, or month to month. If you want to know the exact price, you should consult the chemical raw material suppliers and carefully observe the current market conditions in order to obtain accurate information.