(1-ethoxy-1-oxopropan-2-yl) What is the chemical structure of 5- [2-chloro-4- (trifluoromethyl) phenoxy] -2-nitrobenzoate

(1-ethoxy-1-oxopropyl-2-yl) 5 - [2-chloro-4 - (trifluoromethyl) phenoxy] - 2-nitrobenzoate, which is the name of an organic compound. To clarify its chemical structure, it can be analyzed as follows.

Looking at "benzoate" first, it can be seen that its basic structure is derived from benzoic acid, and the carboxyl group (-COOH) of benzoic acid is esterified with alcohol to form an ester group (-COO -). " 5 - [2 - chloro - 4 - (trifluoromethyl) phenoxy] - 2 - nitrobenzoate "," 5 - "shows the substituent attached to the No. 5 carbon position of the benzoic acid benzene ring," [2 - chloro - 4 - (trifluoromethyl) phenoxy] "is a chlorine-containing, trifluoromethyl-containing phenoxy substituent, connected to the benzene ring No. 5 carbon;" 2 - nitro "is a phenoxy group attached to the benzene ring No. 2 carbon.

Look again at " (1-ethoxy-1-oxo-propane-2-yl) ", which is the group on the other side of the ester group. "1-ethoxy", that is, ethoxy (- OCH -2 CH) is attached to carbon No. 1; "1-oxo" refers to carbon where carbon No. 1 is a carbonyl group (C = O); "propyl-2-yl" means that this group is a propyl group containing three carbons, and the carbon connected to the ester group is carbon No. 2.

In summary, the chemical structure of the compound is benzoic acid benzene ring No. 2 carbonyl nitro, No. 5 carbonyl [2-chloro-4- (trifluoromethyl) phenoxy], carboxyl group and (1-ethoxy-1-oxo-propyl-2-yl) ester. Its structure is complex, multi-functional groups coexist, and each part affects each other, which plays a role in its physical and chemical properties.

(1-ethoxy-1-oxopropan-2-yl) What are the main uses of 5- [2-chloro-4- (trifluoromethyl) phenoxy] -2-nitrobenzoate

(1-ethoxy-1-oxopropyl-2-yl) 5 - [2-chloro-4 - (trifluoromethyl) phenoxy] - 2-nitrobenzoate This substance is commonly used as a herbicide in the field of agriculture. Due to its unique chemical structure, it can effectively curb the growth of weeds and has a significant inhibitory effect on a variety of common weeds in farmland, such as barnyard grass, matang, and horsetail. Applying medicine in the early stage of weed germination can hinder its growth and development, making it difficult to compete with crops for nutrients, light and water, thereby ensuring the vigorous growth of crops and improving the quality and quantity of agricultural products. < Br >
In the process of industrial synthesis, this compound is also an important intermediary. Through a specific chemical reaction process, it can be prepared through a multi-step reaction. And in the preparation process, the reaction conditions, such as temperature, pressure, catalyst type and dosage, are strictly required. Only by precisely controlling these conditions can the purity and yield of the product be improved.

In the field of scientific research, because it contains special functional groups and complex structures, researchers often take it as the object to study the reaction mechanism, structure and properties of organic compounds and other theoretical topics. Its research in the fields of chemical synthesis methodology and pesticide creation is of key value, providing a key theoretical foundation and practical experience for the subsequent research and development of new pesticides and organic compounds.

(1-ethoxy-1-oxopropan-2-yl) What are the physical properties of 5- [2-chloro-4- (trifluoromethyl) phenoxy] -2-nitrobenzoate

(1-Ethoxy-1-oxopropyl-2-yl) 5 - [2-chloro-4 - (trifluoromethyl) phenoxy] - 2-nitrobenzoate, this is an organic compound. Its physical properties are quite important and are related to many practical applications.

First talk about the appearance. Generally speaking, it is a solid state, mostly in the form of white or off-white crystalline powder, just like a delicate frost and snow gathered in one place. This form is easy to store and transport, and it is carefully wrapped like a treasure, safely placed in a container.

When it comes to melting point, it is about a certain range. This property is of great significance for material identification and purity determination. It is like a precise ruler to measure its purity. When heated to the melting point temperature, it is like ice and snow in the warm sun, slowly melting into a liquid state, showing wonderful physical changes.

The solubility cannot be ignored either. In organic solvents such as acetone and dichloromethane, its solubility is good, just like fish entering water and fusing freely. However, in water, the solubility is very small, just like oil and water, which are difficult to mix into one. This difference in solubility plays a guiding role in chemical synthesis, separation and purification.

In terms of density, it has a specific value, although invisible but existing, like a hidden weight code, which plays a key role in operations such as mass and volume conversion.

The physical properties of the compound may be affected by surrounding environmental factors. When the temperature increases, its melting point may change slightly, like the weight of the balance, which is slightly shaken by external breeze interference; the type and proportion of solvents change, and the solubility also changes, just like a changeable dancer, changing dance positions with different melodies. Therefore, in practical applications, these factors need to be carefully considered in order to make this compound work best.

(1-ethoxy-1-oxopropan-2-yl) What is the synthesis method of 5- [2-chloro-4- (trifluoromethyl) phenoxy] -2-nitrobenzoate

To prepare (1-ethoxy-1-oxopropyl-2-yl) 5- [2-chloro-4- (trifluoromethyl) phenoxy] -2-nitrobenzoate, the following ancient methods can be used.

First take 5- [2-chloro-4- (trifluoromethyl) phenoxy] -2-nitrobenzoic acid and place it in a clean reactor. The kettle should be dried over a charcoal fire to remove moisture. Then, take an appropriate amount of 1-ethoxy-1-oxo-propane-2-alcohol and slowly inject it into the kettle. The ratio of the two should be precisely prepared. According to the experience of the ancient recipe, 1:1.2 is the appropriate ratio. This ratio can make the reaction more complete.

Add an appropriate amount of catalyst to the kettle, optional concentrated sulfuric acid or p-toluenesulfonic acid. The amount of catalyst is about 3% - 5% of the total mass of the reactant. This amount can not only accelerate the reaction, but also not cause too many side reactions.

Slowly heat the reactor with a slow fire, so that the temperature in the kettle rises to about 80-100 ° C. During this period, a bamboo stick needs to be stirred continuously to heat the reactants evenly. This temperature range allows the reaction to proceed smoothly and avoids the decomposition of the product due to high temperature.

During the reaction process, pay close attention to the changes in the kettle, and it can be seen that there are bubbles slowly escaping, which is a sign of the reaction. The reaction continues for about 3-5 hours (according to modern times, about 4-6 hours). When the reaction liquid no longer has obvious bubbles, take a little reaction liquid and check the reaction progress by thin layer chromatography. If the raw material point basically disappears, it indicates that the reaction is nearly complete. < Br >
After the reaction is completed, the reaction solution is cooled to room temperature, and then poured into a large amount of ice water. At this time, the product precipitates due to its low solubility in water. Filter with a Brinell funnel, collect the precipitation, and wash the precipitation with cold water several times to remove impurities.

The resulting crude product can be recrystallized in a mixed solvent of ethanol and water. The ratio of mixed solvent, ethanol and water is preferably 3:1. Heat to dissolve the crude product, filtered while hot to remove insoluble impurities, the filtrate was allowed to stand and cool, until the crystals precipitated completely, then filtered again, the crystals were collected, and placed in a ventilated place to dry to obtain pure (1-ethoxy-1-oxopropyl-2-yl) 5 - [2-chloro-4 - (trifluoromethyl) phenoxy] - 2 - nitrobenzoate.

(1-ethoxy-1-oxopropan-2-yl) What are the safety precautions for 5- [2-chloro-4- (trifluoromethyl) phenoxy] -2-nitrobenzoate

(1-Ethoxy-1-oxopropyl-2-yl) 5 - [2-chloro-4 - (trifluoromethyl) phenoxy] - 2-nitrobenzoate, this is a complex chemical substance. Regarding its safety precautions, caution is required.

First of all, this product may be toxic. Contact with it may cause physical discomfort, such as inhaling its dust, vapor, or damaging the respiratory tract, causing coughing, asthma, etc.; if it touches the skin, it may cause allergies or burns; if it accidentally enters the eyes, it will cause serious damage to the eyes. Therefore, when operating, it is necessary to wear professional protective equipment, such as protective gloves, goggles and gas masks, to prevent contact with all parts of the body.

Secondly, its chemical properties are lively. Under certain conditions, there may be a risk of combustion or explosion. When storing, it should be placed in a cool, dry and well-ventilated place, away from fire, heat and oxidants. During handling, it should also be handled with care to avoid violent vibrations and collisions to prevent dangerous reactions.

Furthermore, after use, the remaining materials and waste must not be discarded at will. Relevant regulations and standards must be followed, and proper disposal should be carried out to prevent environmental pollution. In the event of a leakage accident, personnel should be evacuated immediately, the scene should be isolated, and irrelevant personnel should be strictly prohibited from approaching. At the same time, take prompt and effective measures, such as using suitable materials to absorb leaks, and then dispose of them safely. In short, when dealing with this chemical substance, it is necessary to strictly follow safety procedures and must not be taken lightly to ensure that personnel safety and the environment are not endangered.