The author of "Tiangong Kaiwu" was written by the sage Song Yingxing, which collected the culmination of all kinds of skills in the world, related to all industries of agriculture and industry, and described in detail the nature of all things. However, the name "1 + - + alkane-4 + - + ene-2 + - + methoxybenzene" is not included in the book, because the times are different, and chemistry was not developed at that time, so there is no such fine name. However, based on today's chemical knowledge, if "Tiangong Kaiwu" wants to describe the physical properties of this object, it can be said as follows:
This "1-alkane-4-ene-2-methoxybenzene", its appearance can be seen, or it is a clear and transparent liquid, or it is a crystal, which varies depending on the molecular structure and environmental temperature and humidity. The smell may have a specific fragrance, but its taste is spicy, but it is different from the fragrance of ordinary plants and trees, and has the smell of chemical synthesis.
In terms of its density, it is lighter or heavier than water, depending on the intermolecular accumulation and atomic weight. If it is lighter than water, it floats on the water, with clear boundaries; if it is heavier than water, it sinks to the bottom of the water, such as stone entering the water. Its solubility is in organic solvents, such as alcohols, ethers, etc., or miscible, and the phase is seamless; in water, it is more insoluble, and the two meet, and the Jingwei is self-divided.
Furthermore, the melting point of this object is also its important physical property. At the melting point, solid-liquid transformation, such as ice disappearing in spring; at the boiling point, liquid-gas phase is easy, if the cloud rises in the air. The level of its melting and boiling point is closely related to the intermolecular forces, such as van der Waals force, hydrogen bond and the like.
And the conductivity of this material, because it is an organic compound, there are no free moving ions or electrons inside, so the conductivity is weak, almost insulating, and can be used as a material to isolate current. Its light transmittance, or good optical properties, under light, or can be refracted and reflected, showing a different luster, which can be selected for optical devices, is also unknown.

The chemical properties of 1 + -deuterium-4 + -tritium-2 + -methoxybenzyl alcohol have three properties.
First, it has the general properties of alcohols. Because it contains hydroxyl groups, it can replace with active metals such as sodium to generate hydrogen and sodium alcohol. The reaction formula is as follows:\ (2R - OH + 2Na\ longrightarrow 2R - ONa + H_ {2}\ uparrow\), which is due to the activity of hydrogen in the hydroxyl group, and the reaction is relatively mild, and bubbles can be observed to slow down. Under the condition of concentrated sulfuric acid catalysis and heating, the elimination reaction can occur, and one molecule of water can be removed to produce alkenes. If the conditions are suitable, it can be dehydrated into alkenes to form a double bond structure.
Second, because of the methoxy group connected, an electronic effect is generated on the benzene ring. Methoxy group is the power supply group, which can increase the electron cloud density of the benzene ring, causing the benzene ring to be more prone to electrophilic substitution reaction. If it reacts with bromine water, bromine atoms can be introduced into the benzene ring, and most of them are in the adjacent and para-position of the methoxy group. Because the electron cloud density at the two places is relatively higher, the electrophilic reagent is more likely to attack. Its reaction is more active than benzene, and the products formed also vary according to the reaction conditions.
Third, the characteristics of the benzyl structure. Benzyl alcohol compounds, the α-hydrogen on the benzyl part is affected by the benzene Under the action of a specific oxidizing agent, in case of mild oxidizing agent, it can be oxidized to aldehyde; if the oxidizing agent is stronger, it can be further oxidized to carboxylic acid. And in the presence of light or free radical initiator, hydrogen on α-carbon can undergo free radical substitution reaction and react with free radical reagents such as halogens to produce corresponding substitution products.
As for deuterium and tritium, they are isotopes of hydrogen. Although their chemical properties are similar to hydrogen, they differ in certain reaction rates due to their mass differences. This is called the isotope effect. However, in a general chemical reaction, if there are no special conditions, its chemical behavior is similar to that of hydrogen. In the above reaction, hydrogen can participate in a similar manner, which has no fundamental impact on the overall reaction process and product structure. Only in specific fields such as fine chemical kinetics studies, the differences need to be carefully considered.

1 + -Alkane-4-ene-2-methoxybenzene, which has important uses in many fields.
In the field of medicinal chemistry, it is often a key intermediate, which can be skillfully converted into various drug molecules with specific pharmacological activities through delicate chemical reactions. Gai because of its unique alkenyl and methoxy groups in its structure, endows it with special chemical properties and can interact with specific targets in organisms, providing a key structural basis for the creation of new drugs, which may have potential effects in the treatment of many diseases such as cardiovascular diseases and tumors.
In the field of organic synthesis, it is also an extremely valuable raw material. With the active reactivity of alkenyl groups and the positioning effect of methoxy groups, chemists can use this to construct complex organic molecular structures. Through various reactions such as addition and substitution, the skeleton of molecules can be expanded, and organic compounds with special functions and structures can be synthesized, providing a novel material basis for materials science, fine chemistry and other fields.
In the fragrance industry, 1 + -alkane-4-ene-2-methoxybenzene may emit a special aroma due to its unique molecular structure. After formulation and processing, it can be used as a fragrance ingredient in perfumes, cosmetics, detergents and other products, giving it a unique fragrance, improving the quality and attractiveness of products, and meeting consumers' diverse needs for aroma.

To prepare 1-bromo-4-butyl-2-acetoxybenzene, the method is as follows:
The bromine atom can be introduced by bromination reaction with p-hydroxybutanone as the starting material. In a suitable reaction vessel, add p-hydroxybutanone and dissolve it in a suitable organic solvent, such as dichloromethane. At low temperature, slowly add bromine dropwise, and stir at the same time to control the reaction temperature and dropwise speed, so that the bromine atom selectively replaces the hydrogen atom at a specific position on the benzene ring to generate 1-bromo-4-hydroxybutanone. This process requires attention to the strong corrosiveness and volatility of bromine, and the operation should be carried out in a well-ventilated environment.
Then, acetylate 1-bromo-4-hydroxybutylbenzophenone. Take 1-bromo-4-hydroxybutylbenzophenone and place it in a reactor, add an appropriate amount of acetylation reagent, such as acetic anhydride, and use pyridine as a catalyst. Heat to a suitable temperature to acylate the hydroxyl group with acetic anhydride, so that the acetoxy group is introduced at the hydroxyl group position to generate 1-bromo-4-butyl-2-acetoxybenzene. After the reaction, the product is purified by a series of post-processing operations, such as vacuum distillation, extraction, recrystallization, etc., to obtain a high-purity target product.
Another way of thinking is to start from p-bromophenol. First, through Friedel-Crafts acylation reaction, a butyryl group is introduced at the counter position of the phenolic hydroxyl group to form 1-bromo-4-butyryl phenol. Lewis acid such as anhydrous aluminum trichloride is used as a catalyst, and p-bromophenol reacts with butyryl chloride in an inert solvent. After the reaction is completed, the reaction mixture is processed by hydrolysis and other steps. Next, 1-bromo-4-butyrylphenol was protected by hydroxyl groups, and acetylation was used to convert phenolic hydroxyl groups into acetoxy groups with acetic anhydride and pyridine as reagents, and finally 1-bromo-4-butyl-2-acetoxybenzene was obtained. Similarly, the product needs to be separated and purified to achieve the desired purity.

When storing and transporting 1 + -alkane-4-ene-2-acetoxybenzene, pay attention to everything. This is a chemical substance, and its properties need to be carefully inspected to ensure safety.
When storing, the first choice is to choose the environment. It should be placed in a cool and dry place away from direct sunlight. The heat and energy of sunlight may cause its chemical changes, which can cause danger. And keep away from fires and heat sources, which are flammable. If it is hot, this substance may burn or explode, which is very dangerous.
Furthermore, the storage place should be well ventilated. Avoid gas accumulation and reduce the risk of explosion. Because of its volatile gas, it accumulates in a closed space, and it will cause disaster in case of fire. When storing, it needs to be placed separately from oxidizers, acids and other substances. When these substances meet with it, or react violently, it will cause disaster.
During transportation, the packaging must be tight. To prevent leakage, environmental pollution and personal injury. Transportation vehicles must also comply with safety regulations and prepare corresponding fire protection and leakage emergency equipment. Drive steadily on the way, avoid emergency brakes and collisions, and avoid package damage.
The escort must have professional knowledge. Knowing the characteristics of this object, know the method of emergency response. In case of leakage, take measures quickly, such as evacuating people, blocking the scene, cleaning up leaks, etc., to minimize damage.
In conclusion, 1 + -alkane-4-ene-2-acetoxybenzene should be treated with caution in all aspects of storage and transportation, and safety procedures should be followed to ensure the safety of people, materials and the environment.