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What is the chemical structure of 5-iodo-3-methylpyridin-2-amine?
5-Iodo-3-methylpyridin-2-amine, one of the organic compounds. Its chemical structure is based on the pyridine ring. The pyridine ring is a six-membered heterocyclic ring, which contains a nitrogen atom and is aromatic.
In the second position of the pyridine ring, there is an amino group (-NH2O), which is a basic group and has nucleophilic properties. It can participate in a variety of chemical reactions, such as salt formation with acids, or substitution reactions with halogenated hydrocarbons, acyl halides, etc. under appropriate conditions. At the
3 position, there is a methyl group (-CH 🥰), and the methyl group is the power supply group, which can affect the electron cloud density distribution of the pyridine ring, and then affect the reactivity and physical properties of the compound. For example, the electron cloud density of the adjacent and para-sites can be relatively increased, which affects the positional selectivity of the electrophilic substitution reaction. At the
5 position, there is an iodine atom (-I), and the iodine atom has a relatively large relative atomic mass and a certain steric resistance effect. And the halogen atom can undergo substitution reactions under specific conditions, such as nucleophilic substitution, and the iodine atom is more likely to leave, because the C-I bond energy is relatively small.
The structural characteristics of this compound make it have potential applications Its different substituents endow molecules with diverse reactivity, and can be used as key intermediates to construct more complex organic molecular structures, which may have important uses in many fields such as medicinal chemistry and materials science.
What are the main physical properties of 5-iodo-3-methylpyridin-2-amine?
5-iodo-3-methylpyridin-2-amine is an organic compound with a variety of important physical properties. Its appearance is often solid, and the color may be white to light yellow powder. The color and morphology are determined by the molecular structure and crystal form.
The compound has a specific melting point, and the exact value varies depending on the purity, roughly within a certain temperature range. The importance of the melting point lies in the identification and purification. Its solubility is also critical. It may have a certain solubility in organic solvents such as ethanol and dichloromethane. Due to the principle of similar miscibility, the pyridine ring and organic group in its structure have good affinity with organic solvents; the solubility in water is relatively low. Due to polar differences, water is a strong polar solvent, and this polar compound is limited. The stability of
5-iodo-3-methylpyridin-2-amine is good under certain conditions, but when exposed to high temperature, strong oxidizing agent or strong acid and alkali, the structure may change due to reaction. It is relatively stable in air, but it may change slowly after long-term exposure to moisture or light. Because it contains atoms such as iodine and nitrogen, these atoms make the molecule have certain polarity and reactivity, which affects its physical properties and chemical behavior.
In what areas is 5-iodo-3-methylpyridin-2-amine applied?
5-iodo-3-methylpyridin-2-amine, it is an organic compound. It has applications in various fields, let me come to you.
In the field of pharmaceutical research and development, such compounds containing nitrogen heterocycles and iodine and methyl groups are often used as the key structures of lead compounds. Because of its unique chemical structure, it can have strong interactions with specific targets in organisms. Or by binding to protein receptors, it regulates physiological processes and has potential value in the treatment of specific diseases. For example, in the study of anti-tumor drugs, the structure of the compound can be modified to enhance its targeting of tumor cells and inhibit the proliferation of tumor cells.
In the field of materials science, it also plays a role. It can be introduced into the structure of polymer materials through specific reactions to give new properties to materials. Such as improving the electrical properties and optical properties of materials. Taking conductive polymer materials as an example, adding such compounds may adjust the distribution of electronic clouds between molecules of materials, improve the conductivity of materials, and make them applied in the manufacture of electronic devices.
In the field of pesticides, 5-iodo-3-methylpyridin-2-amine also has a place. Because of its structural characteristics, or have certain biological activity to pests. It can be used as the basis for the development of pesticide active ingredients. After rational structure optimization, high-efficiency, low-toxicity and environmentally friendly new pesticides can be developed for crop pest control and protection of agricultural production.
In summary, 5-iodo-3-methylpyridin-2-amine in medicine, materials, pesticides and other fields have shown potential application value. With the development of science and technology, its application prospect may be broader.
What are 5-iodo-3-methylpyridin-2-amine synthesis methods?
The synthesis method of 5-iodine-3-methylpyridine-2-amine is an important topic in the field of organic synthesis. Common synthesis paths are as follows.
First, 3-methylpyridine-2-amine is used as the starting material. Protect it first to prevent the amino group from interfering in the subsequent reaction. Suitable protective groups, such as acetyl groups, can be selected, and the amino group is acetylated by reacting with reagents such as acetic anhydride under mild conditions. Subsequently, the iodine substitution reaction is carried out under the action of iodine substitutes. Commonly used iodide reagents include N-iodosuccinimide (NIS), which can be iodized at specific positions in the pyridine ring in organic solvents such as dichloromethane at low temperature and in the presence of appropriate catalysts. After the iodide reaction is completed, the protective group is removed by hydrolysis and other methods to obtain the target product 5-iodine-3-methylpyridine-2-amine.
Second, starting from pyridine derivatives. If suitable 2-halo-3-methylpyridine is available, metal-catalyzed amination can be used. Taking the palladium-catalyzed system as an example, in the presence of a base such as potassium carbonate, it reacts with an amine source such as ammonia water or a suitable amination reagent in an organic solvent and at a suitable temperature to form a C-N bond to construct an amino group. After that, through a halogen atom exchange reaction, the original halogen atom is replaced with iodide, so as to achieve the synthesis of 5-iodine-3-methyl pyridine-2-amine.
Third, by means of the construction reaction of the pyridine ring. For example, with a suitable precursor containing nitrogen, carbon, and iodine atoms, a pyridine ring is constructed through a multi-step reaction. For example, a 1,5-dicarbonyl compound and an ammonia source are condensed under acid catalysis to form a pyridine ring skeleton. Subsequently, methyl groups are introduced through suitable methylation reagents, and then iodine atoms are introduced at specific positions through iodine substitution reaction to obtain the target product. Although this method is a little complicated, it can flexibly design the starting materials and modify the structure of the product.
How safe is the 5-iodo-3-methylpyridin-2-amine?
5-Iodine-3-methylpyridine-2-amine is a common chemical in organic synthesis. Its safety is quite complex, and will be described in detail from many aspects below.
Looking at its physical properties, this compound is solid or has a specific odor. Under normal conditions, the stability is acceptable. In case of hot topics, open flames or strong oxidants, there is a risk, or it may cause combustion or even explosion, just like dry wood meets fire, and it will explode at the touch of a hair.
When it comes to toxicity, although there is no detailed human study yet, it is inferred from the chemical structure and similar compounds that there may be some toxicity. Oral intake may irritate the digestive system, causing nausea, vomiting, abdominal pain, etc., as if the stomach is overturned. If it inhales its dust or vapor, or irritates the respiratory tract, causing cough, asthma, and even damage to the lungs. After skin contact, it may cause irritation, allergies, such as red rash, itching, etc., as if the skin is protesting.
From an environmental point of view, if released into the environment, its chemical structure is complex or difficult to degrade. It flows into water bodies, or endangers aquatic organisms, disrupting the ecological balance of water, just like a pebble thrown into a calm lake, causing ripples. In the soil, it may affect the activity of soil microorganisms and hinder plant growth.
When operating, it is necessary to follow strict safety procedures. Operators should wear protective clothing, gloves and goggles, such as strong armor. The operation site should be well ventilated to disperse possible harmful vapors. Utensils after use should be properly cleaned to prevent residue.
In terms of storage, it should be placed in a cool, dry and ventilated place, away from fire sources and oxidants, just as flammable and explosive materials should be kept away from fire. And it needs to be sealed and stored to prevent moisture or volatilization.
In short, when using and handling 5-iodine-3-methylpyridine-2-amine, the above safety factors must be fully considered and careful operation can be used to avoid danger.
