4-Pyridinecarboxylic acid, 2-methyl-, ethyl ester

Ethyl 2-% methyl-4-pentenyl butyrate is an organic compound with unique chemical properties. Its properties are usually colorless to light yellow liquid with a special odor.
In this compound, due to the carbon-carbon double bond, it is unsaturated and can undergo an addition reaction. In case of bromine water, the double bond can be added to the bromine elemental substance to fade the bromine water. Under suitable catalysts and conditions, it can also be added to hydrogen to convert the carbon-carbon double bond into a single bond.
Its ester functional group determines that it can undergo hydrolysis. Under acidic conditions, hydrolysis generates corresponding acids and alcohols, namely 2-methyl-4-pentenyl butyric acid and ethanol; under alkaline conditions, hydrolysis is more thorough, resulting in carboxylic salts and alcohols. This reaction is a common reaction of esters.
In addition, the hydrogen atoms on the methyl and pentenyl groups connected to the double bond in this compound can undergo a substitution reaction under appropriate conditions. Due to the presence of double bonds, oxidation reactions may also occur, but the specific reaction depends on the oxidizing agent and reaction conditions.
Due to its unique chemical properties, ethyl 2-methyl-4-pentenyl butyrate can be used as an important intermediate in the field of organic synthesis for the preparation of more complex organic compounds; in the fragrance industry, due to its special odor, it can be formulated for the preparation of specific fragrance products.

The common uses of 2-% methyl-4-pentenoic acid ethyl ester are as follows.
First, in the field of fragrances, it is quite useful. This compound has a unique aroma and can add a unique flavor to the preparation of fragrances. Or in floral fragrances, incorporating this 2-% methyl-4-pentenoic acid ethyl ester can make the aroma more lively and fresh, like a delicate flower blooming in spring. The aroma is both natural and fresh, and it adds a bit of agility. It can impart a charming fragrance to perfumes, air fresheners, cosmetics and other products, and enhance the olfactory attractiveness of products.
Second, in the field of organic synthesis, it is an important intermediate. Chemists can use ingenious chemical reactions to use 2% methyl-4-pentenoic acid ethyl ester as the starting material, and through various reaction steps such as addition and substitution, to construct more complex organic molecular structures. For example, the synthesis of some natural product analogs with specific physiological activities, or the preparation of polymer material monomers with special functions, can be used as the basis for the design and practice of synthetic routes, which are of key significance in the research of organic chemistry and industrial production.
Third, it also has applications in food additives. Because of its unique smell, it can be used as a food flavor additive, which can be added in small amounts in specific foods to enhance the flavor of food. For example, in some baked goods and candies, the addition of this substance in moderation can create a unique flavor, enhance the taste and quality of the food, and bring unique taste enjoyment to consumers.

To prepare 2-methyl-4-pentenoic acid ethyl ester, there are three methods.
First, use 2-methyl-4-pentenoic acid and ethanol as raw materials, add concentrated sulfuric acid as catalyst, and carry out esterification reaction under heating conditions. This is a common method. Concentrated sulfuric acid can accelerate the reaction process, dehydrate and condensate the two to form 2-methyl-4-pentenoic acid ethyl ester and water. However, this process needs to pay attention to the control of reaction temperature and time. If the temperature is too high or the time is too long, it is easy to cause side reactions, such as dehydration of ethanol to ethylene, which affects the purity and yield of the product.
Second, 2-methyl-4-pentenoic acid can be made into an acid chloride first, and thionyl chloride is often reacted with it to obtain 2-methyl-4-pentenoyl chloride. This acid chloride is more active than acid, and then reacts with ethanol to form the target product 2-methyl-4-pentenoic acid ethyl ester. The advantage of this method is that the reaction rate is faster, there are relatively few side reactions, and the product purity is quite high. However, thionyl chloride is corrosive and irritating, and it needs to be handled with caution, carried out in good ventilation, and protective measures should be taken.
Third, 2-methyl-4-pentenoic acid is obtained by oxidation reaction of 2-methyl-4-pentenoic acid, and then ethyl 2-methyl-4-pentenoic acid is obtained by esterification reaction with ethanol according to the above method. One more step of oxidation in this way requires the selection of suitable oxidants, such as potassium permanganate. However, the oxidation process also needs to be carefully controlled to prevent excessive oxidation and damage to the structure of the product. And the subsequent esterification reaction also needs to pay attention to the optimization of relevant conditions to achieve the ideal yield and purity.

Today, ethyl 2-methyl-4-pentenoate is available. What is the market price? This is a product of fine chemicals, and its price is determined by various factors.
The first is the raw material. The preparation of ethyl 2-methyl-4-pentenoate requires specific starting materials, such as corresponding alcohols and acids. If the raw material is abundant and easy to obtain, its price may be inexpensive; if the raw material is scarce, or complex extraction is required, the price will be high. For example, if the raw material needs deep-sea mining or exotic introduction, it must be high, causing the price of the product to rise.
The second is the production method. The method of synthesis is complicated and simple, and the difficulty of technology and the amount of energy consumption all involve cost. The ancient method or steps are lengthy, time-consuming and laborious, and there are many by-products and low yield. Today's new method, if it can respond accurately, increase the yield and reduce energy consumption, the cost can be reduced, and the price may be excellent.
Another is quantity. The market seeks prosperity, but the production is limited, and the price will rise; if the supply exceeds the demand, the business will sell its goods, or reduce its price. If the surge in industrial use in a certain season exceeds the supply, the price may skyrocket; on the contrary, if the production capacity expands but the demand does not increase, the price may drop.
And quality. High quality, pure high and less miscellaneous, mostly used in high-end fields, such as medicine, fragrances, its price is high; ordinary quality, or used in general industry, the price is slightly lower.
In summary, the market price of 2-methyl-4-pentenoate ethyl ester is variable, depending on raw materials, production methods, supply and demand, and quality. To know the exact price, consult the chemical market, manufacturer, or relevant trade platform to get a real-time price.

2-% methyl-4-tetrabutyrate ethyl ester should pay attention to the following things during storage and transportation:
First, temperature control is very important. This substance is more sensitive to temperature, and high temperature can easily cause its volatilization to accelerate, or even cause decomposition reactions, resulting in damage to its quality. Therefore, when storing, it should be placed in a cool place, and the temperature should be maintained between 5 and 25 degrees Celsius. During transportation, you should also avoid sun exposure to prevent the temperature in the compartment from getting too high. If transporting in hot summer, you can consider starting when the temperature is slightly lower in the morning and evening, or equipping the transportation vehicle with refrigeration equipment.
Second, the impact of humidity should not be underestimated. Moisture is easy to chemically react with 2-methyl-4-dimethyl butyrate ethyl ester, forming impurities, causing its purity to decrease. When storing, keep it dry, and the humidity should be controlled below 60%. When transporting, in case of rainy days, be sure to take protective measures to prevent rainwater from infiltrating.
Third, pay attention to its compatibility with other substances. 2-methyl-4-dimethyl butyrate ethyl ester is an organic compound, which is easy to react violently with strong oxidants, strong bases, etc. When storing and transporting, it must never be mixed with such substances, so as to avoid safety accidents. It should be strictly classified for storage and transportation, and a safe distance should be maintained between chemicals of different properties.
Fourth, the packaging must be tight. Choose suitable packaging materials, such as corrosion-resistant plastic or metal drums, and ensure a good seal. Preventing leakage can not only avoid product loss, but also prevent it from evaporating into the environment, endangering human health and polluting the environment. Before transportation, carefully check the packaging for signs of damage and leakage. If there is any problem, replace or repair it in time.
Fifth, safety protection is also a top priority. Storage and transportation personnel should be familiar with the characteristics of the substance and safety precautions, and be equipped with necessary protective equipment, such as gas masks, protective gloves, protective glasses, etc. The workplace should be well ventilated to prevent the accumulation of volatile gases. In the event of an accident such as leakage, immediately start an emergency plan and take effective measures to deal with it.