2-sec-Propyl Thiazole

2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91%E5%8F%88%E5%8F%AB%E4%BA%8C%E7%94%B2%E6%B0%A2%E5%9F%BA%E5%99%BB%E5%94%91%EF%BC%8C%E5%85%B6%E4%B8%BB%E8%A6%81%E7%94%A8%E9%80%94%E5%9C%A8%E4%BA%A4%E9%80%9A%E3%80%81%E8%88%9F%E7%93%B6%E3%80%81%E9%99%80%E5%88%B6%E8%82%A5%E8%99%AB%E3%80%81%E5%8C%BB%E7%96%97%E7%AD%89%E9%9D%A2%E5%90%84%E6%9C%89%E7%94%A8%E5%A4%84%E3%80%82
"Tiangong Kaiwu" has a saying: "Where gunpowder, sulfur is pure yang, nitrate is pure yin, the two essences are forced together, and the sound becomes a change. This universe hallucinates a god." The gunpowder ingredients involved are also related to 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91.
At the end of the traffic, in ancient times, there were frequent wars, and they wanted to quickly transmit military information and often borrowed firearms. 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 burning it, it can make a loud noise, and it can be transmitted far away for several miles as a signal to make all parties aware of changes in military conditions.
As for boats, boats on the water, when attacked by the enemy, the 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 system is used as a firearm, which can attack the enemy ship. Burning it, the power is huge, it can break the board of the enemy ship, hurt the enemy, and add a sharp weapon to the water battle.
Furthermore, in order to inhibit insects and rats. In the warehouse, grain grains are often harmed by insects and rats. 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 burned, its taste is pungent, and it can drive away insects and rats, so that grain grains can be protected.
In medical treatment, although 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 is toxic, it can be used as medicine after being processed and used reasonably. According to ancient medical books, it can promote blood circulation and remove blood stasis, and has a certain curative effect on injuries such as bruises.
In short, 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 played an important role in many aspects in ancient times. Although some uses have been replaced by new substances due to changes in the times, its influence in the historical process is indelible.

2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91, its main component is ethyl 2-methyl butyrate. This material has unique physical properties. Although it is not directly described in books such as Tiangong Kaiwu, it can be deduced according to the relevant ester properties and the ancient process principles of fragrance making and winemaking.
2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 Normally, it is a colorless to light yellow transparent liquid. Its boiling point is about 148-150 ° C. Because the molecular structure contains ester groups, it has a certain volatility. It can evaporate slowly in the air and emits a pleasant fruity aroma. It often has a mixed aroma such as apples and pineapples. This aroma characteristic makes it useful in the ancient fragrance making process. Ancient fragrance making is often prepared with various natural fragrances to pursue the richness and coordination of aroma. The aroma of 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 fruit can add a unique charm and enhance the layering of the flavor.
Its density is smaller than that of water, about 0.87-0.89g/cm ³. If mixed with water, it will float on the water surface and show obvious stratification. In terms of solubility, it is slightly soluble in water, but it can be miscible with organic solvents such as ethanol and ether. This property is related to ancient winemaking or the preparation of pharmaceuticals. In the winemaking process, if it involves enhancing the fragrance with fragrances, because it is slightly soluble in water, the amount of addition can be cleverly controlled to make the aroma of the wine more mellow. In the preparation of pharmaceuticals, it can be miscible with ethanol and the like, or can be used as a solvent for some pharmaceutical ingredients to help disperse and absorb drugs.
In addition, the 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 is flammable and can be burned in the event of an open flame or hot topic. Although this chemical property is rarely recorded directly in ancient books, due to the ancient people's understanding and prevention experience of flammable substances, when storing and using materials containing this ingredient, there may also be corresponding precautions to prevent fires.

2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91, its chemical properties are determined.
This property is determined by its unique characteristics and molecular forces, so it can maintain its properties. 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 the atoms in the molecule are in the same dense phase, this property has a degree of phase. If you want to break it, you need to apply a lot of energy. And its molecular properties are in the same phase, the distribution of children is also uniform, and it is not easy to be affected by external factors.
Under normal circumstances, 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 very little biochemical interaction of the surrounding things. Even in the case of common acids and acids, it will also cause the reaction of the future. However, if it is in the case of high temperature, high temperature, or in the case of oxidation, original temperature, its chemical properties may also be broken. The high temperature can greatly increase the energy of the molecule, the molecule is strong, and the original co-production or under the influence is cracked, which can lead to the transformation and reverse. The oxidation or the original transformation can be controlled by the loss of molecules, forcing the distribution of 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 molecules to change and lead to the transformation.
In this case, in the normal situation, the 2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91 exists because of its transformation. However, the end of the piece can still be transformed and characterized into a challenge, resulting in its transformation and reverse.

2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91%E8%8B%A5%E6%9C%89%E5%A4%A7%E5%88%86%E5%88%86%E4%B9%9D%E7%A7%8D%E7%94%A8%E9%87%8F%E5%A4%A7%E3%80%81%E6%95%88%E6%9E%9C%E4%BC%98%E7%9B%8A%E4%B9%8B%E5%A4%84%EF%BC%8C%E5%9C%A8%E4%B8%89%E8%81%94%E4%B9%9D%E8%A1%8C%E4%B8%9A%E4%B8%AD%E5%BA%94%E7%94%A8%E5%B9%BF%E6%B3%9B%E3%80%82
One of them is to work together. This method can help to rejuvenate and eliminate evil, and has the power of rejuvenation and reconstruction in the body of the sick. Such as cold and illness, taking it can solve the cold of the surface and the problem of the viscera. For human diseases, it may be able to cause blood and blood, and promote their early recovery. And its sex is peaceful, and the side effects can be used in the young and the elderly. Therefore, it is often used in this way, and it is like a disease.
The second is to make it. With this lead, the wine can be mellow and fragrant. It can promote the benefits of leaven and increase the taste of wine. The wine in question is either luscious and refreshing, or melancholy and fragrant, gathered at a banquet, and on top of the best. It can not only be delicious, but also be dangerous to the body, so it is popular with the world, and it is indispensable in restaurants and wineries.
The third is in the field of food processing. Adding this ingredient can make the food last for a long time, and improve the taste and color. Such as the food, it can be used to make it crisp and refreshing, with a beautiful taste, and will not last for a long time. Adding it to the cake can make the taste better and fragrant. For meals and delicious food, it is also often used to increase its flavor and attract diners.

2-%E4%BB%B2%E4%B8%99%E5%9F%BA%E5%99%BB%E5%94%91%E7%9A%84%E5%90%88%E6%88%90%E6%96%B9%E6%B3%95%E5%A4%9A%E6%96%B9%E9%9D%A2%E5%8F%AF%E5%8A%A0%E4%BB%A5%E6%89%A9%E7%A4%BA, the following are common methods:
First, diethyl malonate and its derivatives are used as starting materials. Under the action of alkaline reagents such as sodium alcohol, the methylene active hydrogen of diethyl malonate is taken away to generate carbon negative ions. This carbon negative ion has strong nucleophilicity and can undergo nucleophilic substitution reaction with halogenated hydrocarbons. After hydrolysis, decarboxylation and other steps, different substituents can be introduced to finally obtain the target product 2-tert-butyl heptanal. For example, first let diethyl malonate react with suitable halogenated tert-butyl compounds to construct tert-butyl substituted structures, and then improve the carbon chain and functional groups through specific reaction steps. < Br >
Second, the use of Grignard reagents. Grignard reagents are prepared from suitable halogenated hydrocarbons, such as tert-butyl magnesium halide. Grignard reagents have high activity and can undergo addition reactions with carbonyl compounds. If reacted with suitable aldons or ketones, tert-butyl groups can be introduced after hydrolysis, and then through a series of oxidation, reduction and functional group conversion reactions, which can lead to the synthesis of 2-tert-butyl heptanal. For example, tert-butyl magnesium halide is added to a hexanal derivative, and the functional group is subsequently adjusted to reach the target product.
Third, via Wittig reaction. A suitable phosphorus ylide is prepared. The phosphorus ylide reacts with a specific carbonyl compound to form a carbon-carbon double bond, achieving carbon chain growth and structural construction. By selecting suitable reactants and reaction conditions, a structure fragment containing tert-butyl can be constructed, and then converted to 2-tert-butyl heptanal by reduction, oxidation and other reactions. For example, a specific phosphorus ylide reacts with a precursor containing tert-butyl aldehyde, and the target is obtained by subsequent steps such as hydrogenation and reduction.
Fourth, beta-ketoate is used as a raw material. Under basic conditions, the methylene hydrogen of β-ketoate can be captured and nucleophilic substitution occurs with halogenated tert-butyl compounds. After hydrolysis, decarboxylation and other reactions, the structure containing tert-butyl heptanal is constructed, and then further converted into 2-tert-butyl heptanal aldehyde. For example, the derivative containing tert-butyl β-ketoate is first prepared, and then converted into the target aldehyde through a series of reactions. When synthesizing 2-tert-butyl heptanal
, it is necessary to consider the availability of raw materials, the difficulty of reaction conditions, cost and yield according to the actual situation, and select an appropriate synthesis method. And the reaction conditions of each step in the synthesis need to be precisely controlled to ensure the smooth progress of the reaction and the purity of the product.