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What is the chemical structure of (2S) -Oxian-2-Ylmethyl 4-Nitrobenzenesulfonate
The chemical structure of (2S) -ethylene oxide-2-ylmethyl-4-nitrobenzenesulfonate is involved in the field of organic chemistry. Its structure is described from the connection mode and spatial arrangement of each atom.
Ethylene oxide-2-ylmethyl moiety, ethylene oxide is a ternary ring structure, with tension and active properties. The second carbon atom of this ring is connected with a methyl group, which is connected to the ethylene oxide ring by a single bond.
4-nitrobenzenesulfonate moiety, the benzene ring is a six-membered planar ring structure, with a conjugated system, and its properties are relatively stable. In the fourth position of the benzene ring, there is a nitro group (-NO 2O), and the nitrogen atom in the nitro group is connected to the two oxygen atoms by a double bond, which shows strong electron absorption. At the same time, the other position (No. 1 position) of the benzene ring is connected with a sulfonate group (-SO-R), where R is ethylene oxide-2-ylmethyl. The sulfur atom in the sulfonate ester group is connected to three oxygen atoms, one of which is connected to the sulfur by a double bond, and the other is connected to the carbon atom of ethylene oxide-2-ylmethyl group.
Overall, the chemical structure of (2S) -ethylene oxide-2-ylmethyl-4-nitrobenzenesulfonate is formed by chemical bonding between ethylene oxide-derived groups and benzenesulfonate derivatives. The structure contains both active ethylene oxide rings and benzene rings with conjugate stabilization. Each part interacts to give this compound specific chemical properties and reactivity.
What are the physical properties of (2S) -Oxian-2-Ylmethyl 4-Nitrobenzenesulfonate
(2S) -Oxian-2-Ylmethyl 4-Nitrobenzenesulfonate is an organic compound with unique physical properties. Its appearance is often white to off-white crystalline powder, which presents such visual effects due to the orderly arrangement of molecular structures and light scattering.
In terms of melting point, about a specific temperature range, due to the existence of intermolecular forces and lattice energy, when heated to a certain extent, the lattice is destroyed, and the substance changes from solid to liquid. And the compound has a certain solubility. It has good solubility in organic solvents such as dichloromethane and chloroform. Due to the principle of "similar miscibility", its molecular polarity is similar to that of these organic solvents, and it can effectively interact to form a uniform system. However, its solubility in water is limited, because the hydrophobic part of the whole molecule accounts for a large proportion, and the force between water molecules is weak.
In addition, (2S) -Oxian-2-Ylmethyl 4-Nitrobenzenesulfonate specific relative density, when mixed with other substances, can be separated or identified according to this property. At the same time, its stability is acceptable at room temperature and pressure, but in the case of high temperature and strong acid-base environment, the active sites in the molecular structure such as epoxy groups and nitrobenzenesulfonate groups are easy to react, resulting in structural changes, affecting its original properties and functions.
What are the common uses of (2S) -Oxian-2-Ylmethyl 4-Nitrobenzenesulfonate
(2S) -ethylene oxide-2-ylmethyl-4-nitrobenzenesulfonate, which is an important compound in organic chemistry. Its common uses cover the following ends.
The first in the field of organic synthesis, often used as a key intermediate. Because of its structure of ethylene oxide and benzenesulfonate, it gives it unique reactivity. For example, in nucleophilic substitution reactions, benzenesulfonate groups are excellent leaving groups and are vulnerable to attack by nucleophiles. Ethylene oxide rings can also participate in ring-opening reactions, thereby constructing various complex organic molecular structures. For example, by reacting with nucleophiles containing nitrogen, oxygen, sulfur, etc., new carbon-hetero atomic bonds can be formed to synthesize compounds such as alcohols, amines, and thioethers, which can be used in the total synthesis of drugs and natural products.
Furthermore, it also has applications in materials science. After appropriate reaction modifications, it can be introduced into polymer systems to change polymer properties. Such as improving polymer solubility, thermal stability, mechanical properties, etc. For example, copolymerization with specific monomers to prepare functional polymer materials is useful in coatings, adhesives, ion exchange resins, and other fields.
And because of its nitro-containing structure, it may play a role in the preparation of some fine chemicals. It can be converted into amino groups by reduction and other reactions. After the introduction of amino groups, compounds can participate in more types of reactions, providing the possibility for the synthesis of functionalized fine chemicals, such as for the preparation of dyes and fragrances.
In summary, (2S) -ethylene oxide-2-ylmethyl-4-nitrobenzenesulfonate plays an important role in many fields such as organic synthesis, materials science and preparation of fine chemicals due to its own structural characteristics. It has a wide range of uses and is of great significance to chemical research and industrial production.
What is the preparation method of (2S) -Oxian-2-Ylmethyl 4-Nitrobenzenesulfonate
The preparation method of (2S) -ethylene oxide-2-ylmethyl 4-nitrobenzenesulfonate is a key technology in chemical synthesis. To prepare this product, you can follow the following steps:
First, choose the appropriate starting material. Usually start with ethylene oxide derivatives with specific configurations and 4-nitrobenzenesulfonyl chloride. Ethylene oxide derivatives need to have high purity and correct configuration to ensure the accurate configuration of the product. 4-nitrobenzenesulfonyl chloride must also be pure to prevent impurities from causing side reactions in the reaction.
Second, under suitable reaction conditions, the two meet. This reaction often needs to be carried out in organic solvents, such as dichloromethane, trichloromethane and other inert organic solvents, which can provide a stable reaction environment. And add an appropriate amount of alkali, such as triethylamine, pyridine, etc., which can help the reaction to proceed, neutralize the acid produced by the reaction, and promote the reaction to move in the direction of generating the target product.
During the reaction, temperature control is crucial. Generally speaking, low temperature can suppress side reactions, but the reaction rate may be slow; although high temperature can increase, it may exacerbate side reactions. Therefore, it is necessary to explore the appropriate temperature range through experiments, usually between 0 ° C and room temperature.
During the reaction process, it is advisable to closely monitor the progress of the reaction by means of thin layer chromatography (TLC) or high-performance liquid chromatography (HPLC). When the raw materials are exhausted and the amount of target product generated reaches the expected, the reaction can be terminated.
Finally, after the reaction is completed, it needs to go through the process of separation and purification. Usually by column chromatography, select the appropriate eluent, and separate the target product from the reaction mixture to obtain pure (2S) -ethylene oxide-2-ylmethyl 4-nitrobenzenesulfonate. After these steps, the desired product can be obtained.
What are the precautions for (2S) -Oxian-2-Ylmethyl 4-Nitrobenzenesulfonate in chemical reactions?
(2S) -ethylene oxide-2-ylmethyl 4-nitrobenzene sulfonate has many precautions in chemical reactions. This compound has ethylene oxide groups and sulfonate groups, and its properties are active.
First, the reaction conditions need to be precisely controlled. Temperature and pH have a great impact on the reaction process. If the temperature is too high, the ethylene oxide group or ring opening is excessive, resulting in a cluster of side reactions; if the temperature is too low, the reaction rate is slow and time-consuming. For example, in the nucleophilic substitution reaction, the temperature is inappropriate, or the expected product cannot be obtained. PH is also critical. A specific reaction needs to be in an acidic or alkaline environment to proceed smoothly, otherwise the reaction will be difficult or the product will be complex.
Second, the toxicity and potential danger of this compound should not be underestimated. The structure of ethylene oxide is irritating and toxic, and protection must be taken during operation. Work with good ventilation and wear protective equipment, such as gloves, goggles, gas masks, etc., to avoid physical damage caused by inhalation or contact.
Third, the selected solvent has a significant impact on the reaction. The solvent is not only related to the solubility of the compound, but also related to the reaction mechanism and rate. The choice of polar solvent or non-polar solvent depends on the specific reaction. If the wrong solvent is selected, the reaction may not occur, or the reaction path may be changed to form a different product.
Fourth, the proportion of reactants must be accurate. ( 2S) -ethylene oxide-2-ylmethyl 4-nitrobenzene sulfonate is out of proportion to other reactants, or causes waste of raw materials or poor product purity. In some reactions, the proportion deviation will greatly reduce the yield of the main product and increase the by-products.
Fifth, the monitoring of the reaction process is very important. With the help of thin layer chromatography, liquid chromatography and other means, the reaction process can be grasped in real time, so as to adjust the reaction conditions in a timely manner to ensure that the reaction proceeds in the expected direction and obtain the ideal product.