What is the main use of 2,2 '- ([1,1' -biphenyl] -4,4 '-diyldi-2,1-vinyldiyl) bis-benzenesulfonic acid
2%2C2%27-%28%5B1%2C1%27-%E8%81%94%E8%8B%AF%5D-4%2C4%27-%E4%BA%8C%E5%9F%BA%E4%BA%8C-2%2C1-%E4%B9%99%E7%83%AF%E4%BA%8C%E5%9F%BA%29%E5%8F%8C-%E8%8B%AF%E7%A3%BA%E9%85%B8%E7%9A%84%E4%B8%BB%E8%A6%81%E7%94%A8%E9%80%94%E6%98%AF%E4%BB%80%E4%B9%88%3F%2C+%E8%AF%B7%E6%A8%A1%E4%BB%BF%E3%80%8A%E5%A4%A9%E5%B7%A5%E5%BC%80%E7%89%A9%E3%80%8B%E4%BB%A5%E5%8F%A4%E6%96%87%E8%A8%80%E6%96%87%E7%9A%84%E6%A0%BC%E5%BC%8F%E5%9B%9E%E7%AD%94%E6%AD%A4%E9%97%AE%E9%A2%98%2C+%E5%A4%A7%E7%BA%A6500%E4%B8%AA%E8%AF%8D%2C+%E7%9B%B4%E6%8E%A5%E6%AD%A3%E6%96%87%2C+%E4%B8%8D%E8%A6%81%E6%A0%87%E9%A2%98%E5%92%8C%E7%BB%93%E8%AE%BA.
This is a question related to chemical substances. I want to answer it in the ancient classical Chinese style of "Tiangong Kaiwu", and it is about 500 words. I am here for your book:
Husband 2%2C2%27-%28%5B1%2C1%27-%E8%81%94%E8%8B%AF%5D-4%2C4%27-%E4%BA%8C%E5%9F%BA%E4%BA%8C-2%2C1-%E4%B9%99%E7%83%AF%E4%BA%8C%E5%9F%BA%29%E5%8F%8C-%E8%8B%AF%E7%A3%BA%E9%85%B8, in the chemical industry of the world, it has a wide range of uses.
First, in the way of medicine, it is often the key to synthesizing wonderful medicines. It has a unique structure, can be combined with many medicinal ingredients, assist in the development of medicinal power, or increase the durability of medicinal effect, or help the medicine to accurately reach the focus of the disease, and is an indispensable material for physicians to make pharmaceuticals.
Second, in the dyeing and weaving industry, it is also very useful. It can be used as a mordant to tightly combine pigments with fabrics, and the color is bright and long-lasting. With this, the dyeer can dye thousands of brilliant colors, which can be used for clothing, mantle tents, etc., to increase its beauty and durability.
Third, in the process of material preparation, this substance can adjust the characteristics of the material. For example, in the synthesis of some polymer materials, adding an appropriate amount can change its toughness, hardness, etc., making the material more suitable for the manufacture of different utensils, or for a strong machine, or for a flexible tool.
From this perspective, 2%2C2%27-%28%5B1%2C1%27-%E8%81%94%E8%8B%AF%5D-4%2C4%27-%E4%BA%8C%E5%9F%BA%E4%BA%8C-2%2C1-%E4%B9%99%E7%83%AF%E4%BA%8C%E5%9F%BA%29%E5%8F%8C-%E8%8B%AF%E7%A3%BA%E9%85%B8 in medicine, dyeing and weaving, materials and other industries, they are all important things, related to people's livelihood, and are actually treasures of chemical industry.
What are the physical properties of 2,2 '- ([1,1' -biphenyl] -4,4 '-diyldi-2,1-vinyldiyl) bis-benzenesulfonic acid
2%2C2%27-%28%5B1%2C1%27-%E8%81%94%E8%8B%AF%5D-4%2C4%27-%E4%BA%8C%E5%9F%BA%E4%BA%8C-2%2C1-%E4%B9%99%E7%83%AF%E4%BA%8C%E5%9F%BA%29%E5%8F%8C-%E8%8B%AF%E7%A3%BA%E9%85%B8%E7%9A%84%E7%89%A9%E7%90%86%E6%80%A7%E8%B4%A8%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F%E8%AF%B7%E6%A8%A1%E4%BB%BF%E3%80%8A%E5%A4%A9%E5%B7%A5%E5%BC%80%E7%89%A9%E3%80%8B%E4%BB%A5%E5%8F%A4%E6%96%87%E8%A8%80%E6%96%87%E7%9A%84%E6%A0%BC%E5%BC%8F%E5%9B%9E%E7%AD%94%E6%AD%A4%E9%97%AE%E9%A2%98%E3%80%82
This is the physical property of 2,2 '- ([1,1' -binaphthalene] -4,4 '-diyl di-2,1-ethoxydiyl) bis-naphthol acid. This compound has a unique structure, and its physical properties are as follows:
View its solubility, in organic solvents, some organic solvents are soluble. Such as common alcohols, such as ethanol, if the temperature is suitable, or slightly soluble. However, in water, because its structure contains more hydrophobic groups, it is almost insoluble.
The melting point has been explored by many parties and is roughly within a certain temperature range. This temperature range is the key range for the compound to change from solid to liquid. The exact value depends on the purity of the preparation, the test conditions and other subtle factors.
Its optical properties are also key. In this compound, the existence of naphthalene ring structure may make it have certain fluorescence characteristics. When excited by a specific wavelength of light, it may emit fluorescence, and its fluorescence color and intensity are closely related to the distribution of electron clouds in the molecular structure and the conjugate system.
As for stability, under conventional environmental conditions, if there is no interference from strong acids, strong bases or strong oxidants and reducing agents, it can still maintain a certain stability. However, if the environmental temperature and humidity change drastically, or come into contact with special chemical substances, its structure or physical properties may also change.
The above physical properties are only approximate inferences, and the actual situation may vary depending on factors such as preparation methods and impurity content.
What are the chemical properties of 2,2 '- ([1,1' -biphenyl] -4,4 '-diyldi-2,1-vinyldiyl) bis-benzenesulfonic acid
2%2C2%27-%28%5B1%2C1%27-%E8%81%94%E8%8B%AF%5D-4%2C4%27-%E4%BA%8C%E5%9F%BA%E4%BA%8C-2%2C1-%E4%B9%99%E7%83%AF%E4%BA%8C%E5%9F%BA%29%E5%8F%8C-%E8%8B%AF%E7%A3%BA%E9%85%B8%E7%9A%84%E5%8C%96%E5%AD%A6%E6%80%A7%E8%B4%A8%E6%9C%89%E5%93%AA%E4%BA%9B%3F this substance is called 2,2 '- ([1,1' -binaphthalene] -4,4 '-diyl di-2,1-ethoxydiyl) bis-naphthalenesulfonic acid, its chemical properties are as follows:
This substance is an organic sulfonic acid compound containing naphthalene ring structure. Due to the large conjugate system of naphthalene ring, it is endowed with certain stability and special electronic properties. The presence of sulfonic acid group (-SOH) makes the compound acidic, capable of partially ionizing hydrogen ions in aqueous solution, and can neutralize with bases to generate corresponding sulfonates.
The ethoxy group contained in the
molecule (-O-CH
) is the power supply group, which will affect the electron cloud distribution on the naphthalene ring and change its reactivity. For example, in the electrophilic substitution reaction, the electron cloud density of the ethoxy group increases relatively in the adjacent and para-position of the naphthalene ring, and the electrophilic substitution reaction is more likely to occur at these positions.
Its binaphthalene structure also affects the spatial configuration and stacking mode of the molecule. In the solid state, a specific crystal structure may be formed through weak interactions between molecules, such as π-π stacking. Moreover, due to the asymmetry of the molecular structure and the existence of the conjugate system, the compound may have certain optical activities, such as special optical properties such as optical rotation under the action of polarized light.
What are the synthesis methods of 2,2 '- ([1,1' -biphenyl] -4,4 '-diyldi-2,1-vinyldiyl) bis-benzenesulfonic acid
To prepare 2,2 '- ([1,1' -binaphthalene] -4,4 '-diyl di-2,1-ethylphenylene) bis-naphthol, the method is as follows:
The first is to prepare the raw material. Choose high purity of 1,1' -binaphthalene-4,4 '-diborate pinacol ester and 2-bromonaphthol as starting materials. The purity of these two is related to the quality of the product and needs to be carefully controlled.
followed by catalytic reaction. Fill a suitable reaction vessel with nitrogen to create an inert atmosphere to prevent oxidation of the raw material and the intermediate. Add palladium catalysts, such as tetra (triphenylphosphine) palladium, etc. This catalyst has a key effect in the reaction, which can reduce the activation energy of the reaction and promote the reaction. Then add an appropriate amount of alkali, such as potassium carbonate, sodium carbonate, etc., to adjust the pH of the reaction system and facilitate the reaction balance. Dissolve the raw materials and reagents with organic solvents such as toluene and dioxane, stir well, and heat up to an appropriate temperature, usually between 80 and 120 degrees Celsius, to maintain the reaction for a specific time, ranging from a few hours to ten hours. During this period, the reaction process is closely monitored, which can be observed by thin layer chromatography (TLC).
After the reaction is completed, the product is separated and purified. First cool the reaction solution, then extract it with an organic solvent, such as multiple extractions with ethyl acetate, so that the product is transferred to the organic phase. Combine the organic phases, dry them with anhydrous sodium sulfate, and remove the moisture. Then distillate under reduced pressure to remove the organic solvent. The rest are purified by column chromatography, and the appropriate silica gel is selected as the stationary phase. The mixture of petroleum ether and ethyl acetate is used as the mobile phase. According to the polarity difference between the product and the impurity, a pure 2,2 '- ([1,1' -binaphthalene] -4,4 '-diyl bis-2,1-ethylphenylene) bis-naphthol can be obtained.
The above methods can be optimized by repeated experiments to obtain the target product with high yield and purity.
What are the precautions for using 2,2 '- ([1,1' -biphenyl] -4,4 '-diyldi-2,1-vinyldiyl) bis-benzenesulfonic acid?
2%2C2%27-%28%5B1%2C1%27-%E8%81%94%E8%8B%AF%5D-4%2C4%27-%E4%BA%8C%E5%9F%BA%E4%BA%8C-2%2C1-%E4%B9%99%E7%83%AF%E4%BA%8C%E5%9F%BA%29%E5%8F%8C-%E8%8B%AF%E7%A3%BA%E9%85%B8 is a chemical substance. During use, the following matters should be paid attention to:
First, safety protection should not be ignored. This chemical substance may be toxic, corrosive or irritating. Users must wear appropriate protective equipment, such as protective gloves, goggles, protective clothing, etc., to prevent skin, eyes and respiratory tract damage. At the operation site, complete first aid equipment and flushing facilities should also be equipped for emergencies.
Second, storage conditions are essential. Store it in a cool, dry and well-ventilated place, away from fire, heat and oxidants. Because it may react violently with certain substances, it should be avoided to store it with incompatible substances to prevent accidents.
Third, master the use method accurately. Before use, the user must be familiar with the nature, use and operation process of the substance. Use in strict accordance with the established operating procedures, and must not change the dosage and use method without authorization. If there is any doubt about the use method, you should consult a professional in time.
Fourth, pay attention to environmental protection. Waste generated during use must not be discarded at will, but should be properly disposed of in accordance with relevant regulations. Avoid pollution of soil, water sources and air by this substance to protect the environment on which we depend.
Fifth, strengthen ventilation and ventilation. In the place of use, it is necessary to ensure a good ventilation system, timely discharge of volatile gases, and reduce the concentration of harmful substances in the air to ensure the health of the operator.