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What is the chemical structure of Methyl (2r) -2- [ (tert-butoxycarbonyl) amino] -3-iodopropanoate
Eh, this "Methyl (2r) -2- [ (tert - butoxycarbonyl) amino] -3-iodopropanoate" has the name of the compound. According to the reason of chemistry, "Methyl" is a methyl group, indicating that it contains a -CH group. " (2r) " refers to the formation of a chiral center in a compound, which is R-type. "2- [ (tert - butoxycarbonyl) amino]", which can be in the second position of the molecule, has a group, and this group is formed from the phase of tert-butoxycarbonyl (-C (CH) Plus OC (O) -) Plus amino (-NH2O), that is, -NHCOOC (CH). " 3-Iodo "table has an iodine atom (-I) substituted at the 3rd position." Propanoate "indicates that this compound is an ester of propionate, and the carboxyl methyl group of propionic acid (known from" Methyl ") forms an ester. Therefore, its chemical composition is generally: CH-OOCCH (NHCOOC (CH-O)) CH-I, which is based on its name.
What are the main uses of Methyl (2r) -2- [ (tert-butoxycarbonyl) amino] -3-iodopropanoate
Methyl (2R) -2 - [ (tert-butoxycarbonyl) amino] -3 -iodopropionate is an important compound in the field of organic synthesis. Its use is quite extensive, first in drug synthesis. In this field, it is often used as a key intermediate, which can introduce specific functional groups through various chemical reactions to build complex drug molecular structures. For example, in the development and synthesis of some anti-cancer drugs, this compound can precisely interact with other molecules due to its unique structure. Through a series of reactions, it gradually builds a drug structure with specific pharmacological activities.
Furthermore, it also has important functions in the field of peptide synthesis. In the process of peptide synthesis, it can be used as a protective amino acid derivative to effectively protect the amino group and prevent unnecessary side reactions during the reaction process. When the required reaction steps are completed in sequence, the tert-butoxycarbonyl can be removed under mild conditions, so as to achieve precise modification and connection of amino acids at specific positions in the polypeptide chain, and help to synthesize polypeptide molecules with precise structure and clear function.
In addition, in the field of materials science, methyl (2R) -2 - [ (tert-butoxycarbonyl) amino] -3 - iodopropionate has also emerged. It can participate in the synthesis of certain functional polymer materials, through the activity of its iodine atom, polymerize with other monomers, endowing the material with novel properties, such as improving the solubility and thermal stability of the material, or endowing the material with specific biocompatibility, etc., to open up new paths for the creation of new materials.
What is the synthesis method of Methyl (2r) -2- [ (tert-butoxycarbonyl) amino] -3-iodopropanoate
To prepare methyl (2R) -2 [ (tert-butoxycarbonyl) amino] -3-iodopropionate, the method is as follows:
First take (2R) -2-amino-3-iodopropionic acid, which is the key starting material. Dissolve it in a suitable solvent, such as dichloromethane, tetrahydrofuran, etc., to facilitate the smooth reaction.
Then, add a tert-butoxycarbonylation reagent, such as di-tert-butyl dicarbonate (Boc 2O O). This reagent can introduce tert-butoxycarbonyl to protect the amino group. At the same time, an appropriate amount of bases, such as triethylamine, N, N-diisopropylethylamine (DIPEA), need to be added. The alkali can neutralize the acid generated by the reaction, and promote the reaction to proceed in a positive direction. During the reaction, the temperature should be controlled between low temperature and room temperature, usually 0 ° C to 25 ° C. The reaction can be monitored by thin layer chromatography (TLC) for several hours. When the raw materials are exhausted, the reaction is completed.
Then, the separation and purification steps are carried out. First, the reaction solution is washed with water to remove the unreacted base and the generated salt. Then the product is extracted with an organic solvent, such as ethyl acetate. The organic phase is collected and the water is removed with a desiccant such as anhydrous sodium sulfate. After that, the crude product is obtained by distillation under reduced pressure to remove the solvent.
Finally, the crude product is further purified by column chromatography. Using silica gel as the stationary phase, select a suitable eluent, such as the mixture of petroleum ether and ethyl acetate, and adjust the ratio of the two according to the polarity of the product. Collect the fractions containing pure products, remove the solvent, and obtain pure methyl (2R) -2- [ (tert-butoxycarbonyl) amino] -3-iodopropionate. In this way, it can be synthesized.
What are the physicochemical properties of Methyl (2r) -2- [ (tert-butoxycarbonyl) amino] -3-iodopropanoate
(2R) - 2 - [ (tert-butoxycarbonyl) amino] - 3 - methyl iodopropionic acid, this is an organic compound. Its physical and chemical properties are quite characteristic.
Looking at its properties, it may be a colorless to pale yellow liquid under normal conditions. Due to the interaction between atoms and groups in the molecular structure, the light absorption and reflection exhibit such visual effects.
Talking about the melting point and boiling point, the melting point may be in a relatively low range, between -20 ° C and 0 ° C. Due to the combined effects of intermolecular forces, such as van der Waals force and hydrogen bonds, the solid lattice structure is destroyed at lower temperatures. In terms of boiling point, it is roughly 200 ° C - 250 ° C. This is due to factors such as molecular weight, intermolecular forces, and steric resistance of molecular structure, which determine the energy required for liquid to be converted into gas.
In terms of solubility, the substance has good solubility in organic solvents such as dichloromethane and chloroform. Gein molecules have a certain degree of hydrophobicity, and can form similar intermolecular forces with organic solvent molecules, which conforms to the principle of "similar phase dissolution". However, the solubility in water is poor. Due to the large proportion of hydrophobic parts in the molecular structure, it is difficult to form effective interactions between water molecules and the compound molecules.
In terms of stability, the compound is relatively stable. In the case of strong acids, strong bases or high temperature conditions, reactions may occur. In a strong acid environment, tert-butoxycarbonyl is easily removed by protonation; under strong alkali conditions, ester groups may be hydrolyzed by nucleophilic attack; at high temperatures, the vibration of chemical bonds in the molecule intensifies, which may lead to bond cracking and rearrangement reactions.
The physicochemical properties of this compound are determined by its unique molecular structure. It is widely used in the field of organic synthesis. In-depth understanding of its properties is helpful for the design and implementation of organic synthesis reactions.
Methyl (2r) -2- [ (tert-butoxycarbonyl) amino] -3-iodopropanoate during storage and transportation
Methyl (2R) -2- [ (tert-butoxycarbonyl) amino] -3-iodopropionate is a key intermediate in organic synthesis. When storing and transporting this compound, many points need to be paid attention to.
First, storage temperature is very important. Because it is quite sensitive to temperature, when placed in a cool, dry place, it is usually recommended to store the temperature between 2-8 ° C. If the temperature is too high, it may cause the compound to decompose and deteriorate, which in turn affects its quality and reactivity.
Second, protection from light is also indispensable. The compound is prone to photochemical reactions when exposed to light, resulting in structural changes. Therefore, when storing, it is necessary to use opaque containers, such as brown glass bottles, and store them in places where light is difficult to reach.
Third, during transportation, it is necessary to ensure that the packaging is intact. Because it contains iodine atoms, the chemical properties are more active, and the package is damaged and easy to leak, and react with other substances. Appropriate packaging materials should be selected to ensure its sealing and shock resistance.
Fourth, in view of the chemical activity of the compound, it should be avoided to mix and transport with oxidants, reducing agents, acids, alkalis and other substances. To prevent violent chemical reactions from occurring and causing safety accidents.
Furthermore, the storage and transportation places should be equipped with corresponding emergency treatment equipment and protective equipment. In the event of an accident such as a leak, the staff can take prompt and effective measures to reduce the risk.