4-Pyridinemethanol, 3-fluoro-

3-Jiang-4 to its methyl ether, its chemical properties are as follows:
This ether has ether-like common properties, and it is liquid at room temperature and normal temperature, with a special taste. Its chemical properties are determined, but under specific conditions, it can also be reactive.
First of all, it is qualitative, and the C-O-C phase of the ether is solid, so that 3-Jiang-4 to its methyl ether under general conditions, it can be reactive. For example, in a normal and neutral environment, there is no dilute acid, dilute hydrolytic reaction, and it can exist in a certain period.
When encountering acid, there is no problem. Sulfuric acid and other sulfuric acids can act on the reaction, and the reaction of the child is generated. In addition, the ether is prone to cracking, generating phase alcohols and alkyl normal radicals. This inverse process is: the acid provides particles, and the particles attack the ether oxygen atom, so that the ether oxygen atom is positive, weakening C-O, and causing ether cracking.
Furthermore, 3-4 can cause free radicals to react to its methyl ether. In the presence of light or free radicals, the α-atoms in the ether molecule are easily grabbed by free radicals, resulting in free radicals. In this case, it can be used to react with other substances in one step, and poly-formed compounds can be derived.
In addition, it can form complexes with certain gold atoms. Auranthus can coordinate with solitons on ether oxygen atoms to form specific complexes. This property can be exploited in some synthetic or fractionation processes.
Therefore, 3-Jiang-4 has the characteristics of phase determination to its methyl etheration, and it exhibits rich reaction activity under specific conditions. This property is of great significance in the field of synthesis and chemical research.

3-Jiang-4 has the physical properties of its armor, such as firmness, heaviness, and good resistance.
Armor is a body tool, and its primary physical properties lie in firmness. Made of gold or carefully tanned leather, gold armor is like armor and armor, which can withstand the thorn of a knife or a knife. It also has a relative hardness. It is not easy to break easily in case of external force. Leather armor is not as hard as gold, but it can also be effectively tanned and improved.
Furthermore, the armor is heavy. Gold armor has a high density of materials, and it can be worn around the body. Even if leather armor has high defense performance and thick materials, it also has a certain weight. This heavy feature makes it slightly inconvenient for the wearer to travel, but above the weight, it can provide anti-defense.
The armor has good anti-defense. It is comprehensive and can cover important parts of the person, such as the body, chest, abdomen, etc. The pieces or plates of the gold armor can be used to disperse the attack force. Leather armor can absorb part of the weight due to its soft thickness. Therefore, when weapons such as knives and halberds are attacked, the armor can greatly reduce the damage, ensure the wearer's safety, and make it more dependent on survival on the life of the elephant.
Therefore, the armor of the 3-river-4 direction, with its strong and heavy defense, played an important role in the ancient world. It was indispensable for the defense of the samurai.

In the world phenomenon involved in "Tiangong Kaiwu", the water of rivers and rivers converges to their mother abyss. This is the general trend of nature, and its main cost is of great significance.
Water is also the source of life. The water of rivers rushes into the abyss, and the main function is to nourish all things. Water nourishes the earth, making the fields fertile and the crops can flourish. Such as the water towns in the south of the Yangtze River, the river network is densely covered, and the water flows to the lowlands and converges into the abyss. The surrounding farmland is irrigated by it, and the harvest is abundant every year, nourishing countless people. The business of farming mulberry depends on water. If there is no water from rivers and rivers to gather in the mother abyss in an orderly manner, the land will dry up and the seedlings will wither, and the people's livelihood will be worried.
< br Rivers and rivers converge to form a passageway. Since ancient times, the convenience of boats and boats has depended on the vein of water. Traveling merchants traveled downstream and upstream, goods could flow everywhere, and cultures were also blended. The water of the rivers converges into the abyss, connecting all places and communicating with each other. For example, the Beijing-Hangzhou Grand Canal communicates several rivers, and the rivers and water converge here, becoming the artery of north-south transportation. The smooth transportation of materials and the prosperity of the north-south economy depend on the convergence of water.
Again, it is related to ecological balance. The water of the rivers converges into the mother abyss, shaping a diverse ecology. In the abyss, aquatic organisms multiply and inhabit, fish, shrimp and shellfish, aquatic plants and reeds, forming a vibrant ecosystem. This ecosystem maintains the harmony of nature and provides a place for many organisms to live. And the accumulation of water can adjust the climate, moisturize the surrounding environment, make the air moist and the climate pleasant.
In summary, the water of rivers converges to its mother abyss, which is essential for the food and clothing of the people, the circulation of the economy, and the harmony of the ecology. It is actually the key to the natural creation of heaven and earth, which is related to the rise and fall of all things.

If you want to make 3-alkyne-4-heptene, you can follow the following ancient method.
First, 1-bromopropane interacts with sodium acetylene. Take an appropriate amount of refined 1-bromopropane, place it in a clean reactor, slowly add the newly prepared sodium acetylene, and under the protection of suitable temperature and inert gas, the two undergo a nucleophilic substitution reaction. The principle is that the negative carbon ions in sodium acetylene are strongly nucleophilic and can attack the carbon connected to the bromine atom in 1-bromopropane. The bromine ions leave, and then 1-pentyne is obtained.
Next, 1-pentyne is co-located with sodium metal and liquid ammonia. In the low temperature environment of liquid ammonia, sodium metal provides electrons, and 1-pentyne gets electrons and converts them into free radical negative ions, and then captures protons from liquid ammonia. In this process, due to the low temperature of liquid ammonia and the reaction mechanism, the product is mainly trans-pentene.
Then, trans-1-pentene is reacted with bromoethane in a strong base environment. Choose a suitable strong base, such as potassium tert-butyl alcohol, and add it to the reaction system together with trans-1-pentene and bromoethane. Under the action of strong alkali, the hydrogen on the ortho-carbon of the trans-1-pentene double bond is taken away to form a carbonegative ion. The carbonegative ion attacks the carbon connected to the bromine atom in bromoethane, and the bromine ion leaves, resulting in 3-alkyne-4-heptene.
In this series of reactions, attention should be paid to the precise control of the reaction conditions at each step, such as temperature, the proportion of reactants and the maintenance of inertia in the reaction environment, etc., in order to make the reaction smooth and obtain the target product 3-alkyne-4-heptene with higher yield.

In terms of storage, there are many things that need to be paid attention to.
The first storage aspect. The location is very important, and it is a place where things work and things work. If this wood is in a dark place, it is prone to the growth of fungi and wood rot, and its amount is affected by a large amount. For example, in the rainy season in the south, if the storage and drainage are poor and the ventilation is poor, the surface of the wood will be prone to spots. And the storage area should be flat and stained to prevent the wood from being oblique and oblique due to stacking. The method of stacking is also studied, and it is stacked in an orderly manner. It is divided according to the wood grid and the like, which is convenient for management and use. At the same time, it is necessary to avoid the collision of different woods with each other and improve their quality.
Furthermore, it is important to do so. If it is not properly fixed, the wood should be firmly fixed, and the wood should be firmly fixed to prevent the wood from shifting and falling due to bumps and bumps on the way, which endangers the safety of the road. For example, if it is not firmly fixed, the wood is easy to cause accidents on the road, up and down the slope. On the way, it is necessary to do a good job of prevention. In case of rainy days, it must be covered with a tarp to avoid the wood being soaked in rain. In the hot season, it is also necessary to prevent exposure, because high temperature may cause the wood to lose moisture quickly and cause it to crack. In addition, it is also necessary to reduce the amount of wood in a short period, and the wood is less affected by external adverse factors in the process, so as to maximize the protection of three or four wood in the storage process.