Pyridine, 5-bromo-2-(methylthio)-

The physical properties of 5% mercury-2 (alkyl mercury) are as follows:
Mercury, the common water, is the only gold in the liquid form under normal conditions. Its outer surface is white, has gold light, and has good fluidity. It is easy to form tiny mercury beads when connected to other surfaces. Mercury has a high density, from 1 to 13.59 g/cm ³, and is much heavier than normal liquids, such as clean water density of 1 g/cm ³.
Alkyl mercury is a mercury compound, and its fluidity is lower than that of mercury. The physical properties of alkyl mercury such as melting and boiling vary depending on the alkyl group. Alkyl mercury is generally soluble in water, but easily soluble in soluble solutions, such as benzene, ether, etc. For example, methylmercury, in a liquid under normal conditions, is less toxic than mercury, and is phase-fixed in air.
Mercury has good performance and performance, which is one of the typical characteristics of gold. The evaporation of mercury is high in normal conditions, and it is slow to enter the air. The evaporation of alkyl mercury varies depending on the temperature, but its evaporation is lower than that of mercury. In normal conditions, both mercury and alkyl mercury can maintain their phase. Mercury is in a liquid, and alkyl mercury is partially in a liquid and partially solidified (taking alkyl mercury). In addition, the surface stress of mercury is high, and a convex liquid surface is formed on glass and other surfaces. The isosurface properties of alkyl mercury on some surfaces are also poor due to its negative impact.

5-% alcohol-2- (alkylformyl) alkyne, its chemical properties are as follows:
This substance has certain activity. In the nucleophilic substitution reaction, the presence of alkyl formyl groups changes the electron cloud density of the alkynyl group ortho-site, causing it to have a special response to nucleophilic testers. In case of nucleophilic reagents containing active hydrogen, such as hydroxyl groups of alcohols and amino groups of amines, nucleophilic addition can occur, forming new carbon-heteroatomic bonds.
Its alkynyl three bonds are electron-rich systems and are vulnerable to attack by electrophilic reagents. When exposed to hydrogen halide, electrophilic addition occurs. Hydrogen atoms are first added to one end of the alkynyl group to form an alkenyl halogen intermediate, which is then added to a molecule of hydrogen halide to obtain a dihalogenated alkane derivative.
In the oxidation reaction, if treated with a mild oxidizing agent, the alkyl formyl group can be further oxidized to a carboxyl group, while the alkynyl group can be selectively oxidized to an aldehyde group or a ketone group, depending on the specific reaction conditions and the oxidizing agent used. If a strong oxidizing agent is used, the alkynyl group may be completely oxidized and broken to form a small molecule compound containing a carboxyl group.
In the reduction reaction, the alkynyl group can be partially reduced to an olefin under the action of a suitable reducing agent. If the conditions are appropriate, the alkyl formyl group If lindela catalyst is used to catalyze hydrogenation, cis-olefins can be obtained.
In addition, this substance can undergo esterification reaction due to its alcohol hydroxyl group. With carboxylic acids or their derivatives under acid catalysis, corresponding ester compounds are formed. This reaction is often used in organic synthesis to construct ester structures to modify the physical and chemical properties of molecules.

5-% -2- (ethylmethylacetyl) pyridine, its main use. This compound can be used as an important medium in the field of synthesis. For example, the preparation of specific anti-tumor compounds, 5-% -2- (ethylmethylacetyl) pyridine is serialized, and the activity of the compound is determined. The synergist is bound to specific targets of the tumor cell, blocking the proliferation signal pathway of the tumor, and inhibiting the effect of the tumor.
It also has a place in the field of materials science. In the synthesis of optical diodes (OLED) materials, its special molecules can be used to introduce specific functionalities and control the photophysical properties of the material, such as optical efficiency and chromaticity. With its unique characteristics, improve the performance of OLED materials, make the device better light uniformity, improve performance.
In the field of research, 5-% -2- (ethylmethylacetyl) pyridine can also be used. It can be used as a starting material for the synthesis of new types of pesticides or herbicides, and can be repaired to produce high-performance, low-toxicity and high-efficiency products. The repaired compounds can specifically act on physiological targets of pests or herbs, dry their normal physiological generation, prevent and control pests, and are environmentally friendly, reducing the impact of non-target organisms.

The method of synthesizing 5 - 2 - (methylphenyl) pyridine is the heart of many researchers. The methods are different, each has ingenuity, and this is a bit difficult.
One of them can be combined by the phase of pyridine and methylphenylboronic acid, which can be catalyzed by the Suzuki-Miyaura reaction. This reaction and good performance. The first generation of pyridine and methylphenylboronic acid is soluble in suitable solutions, such as dioxane and toluene. With the help of carbonate, acetic acid and triphenylphosphine are introduced. Control the addition of pyridine, so that the reverse process is smooth. After the reverse process is completed, it is extracted by the usual method, and the target product can be obtained.
Second, the pyridine derivative methyl phenyl compound, Fu - gram alkylation reaction (Friedel - Crafts alkylation reaction) can also be obtained. Pyridine derivatives are dissolved in carbon disulfide, nitrobenzene and other inert solutions, cold Add Lewis acid such as trichloride to catalyze, and Drop added methyl phenyl compound., degree of control, because Fu - gram reaction is prone to multiple substituted byproducts. Reverse, hydrolysis quenching, to extract, column analysis and other methods to obtain Products.
Third, from the phase of pyridinone and methyl phenyl Grignard, it is also a feasible way. First, pyridinone is dissolved in ether or tetrafuran, and the new methyl phenyl Grignard is slowly added at low temperature. Grignard has high activity, and the reaction needs to be in a low water environment. The reverse is completed, and the acid hydrolysis is completed. In the middle, the 5-2- (methylphenyl) pyridine of the chemical head is refined.
Where this method has advantages and disadvantages, the chemist can consider factors such as the availability of raw materials, cost considerations, and the ease of control of the reverse parts.

5 - - 2 - (methyl base) should pay attention to the following general things when it is hidden in the environment:
First, it is hidden. 5 - - 2 - (methyl base) or special, it needs to be stored in a dry, clean and well-preserved environment. Because if it encounters a tide, it may cause the product to multiply, or cause it to suffer. The same is true. And it is necessary to avoid the common room of things that are prone to reaction, in case of accidental combination reaction, causing it to lose its original characteristics.
Second, it is difficult to suffer. It is necessary to ensure the cleanliness and dryness of the utensils, and must not be mixed into them. On the way, it is necessary to prevent strong earthquakes, 5-2-2- (methyl base) or weak utensils, which must not be shaken, or damaged. In addition, the degree of the environment also needs to be controlled, and it should not be placed in the high or low degree of the environment, in order to prevent the change of the environment due to the lack of quality.
If it is not hidden or 5-2-2- (methyl base), it is necessary to be like the ancients who cared for rare treasures, be careful, and pay attention to the quality, in order to ensure that the characteristics of the product are not damaged, so that it is effective in the use of the day.