1 Dimethoxymethyl 2 Iodobenzene

Benzyl dioxide is also a group of organic compounds. It is quite useful in chemical synthesis, drug research and development, and many other fields.
As for saltpeter, its physical properties are particularly impressive. Saltpeter, white and often crystalline, has a brittle texture and feels cool to the touch. Its taste is salty and slightly bitter, easily soluble in water, and when dissolved, it often lowers the water temperature. Saltpeter has strong oxidizing properties, which are prominent in many chemical reactions. Under the scorching fire, saltpeter is easy to decompose and can support combustion, which can make the flame more vigorous.
Looking at ancient books, saltpeter is not uncommon. In the art of alchemy, saltpeter is often the key thing. Warlocks use its characteristics to refine medicinal pills, hoping to obtain a elixir of immortality. In the military field, saltpeter is also indispensable. Because of its strong oxidizing properties, it can participate in the preparation of gunpowder and add power to war. In the folk, saltpeter also has other uses, such as being used to pickle food, which can keep food longer and has a unique flavor.
Saltpeter can also be found in the natural environment, often in dry places, such as caves and rock crevices. With its wisdom, the ancients were able to skillfully collect saltpeter and then use it to make it play a role in various fields, which shows that the ancients were familiar with the physical properties of saltpeter and the exquisite use of it.

(1) Methyl dioxide, this expression is wrong, and there is no such formal name in chemistry. It is speculated that it may want to express "dimethoxy" or the like, but the expression is not standardized, and it is difficult to know its exact reference. If corrected as "dimethoxy", it is a substituent in organic chemistry, composed of two methyl groups connected to an oxygen atom. It is commonly found in many organic compounds and can affect the physical and chemical properties of the compound, such as solubility, boiling point, etc. For example, in some ether compounds, there will be dimethoxy structures, and their chemical properties are relatively stable. However, under certain conditions, such as strong acidic or strong basic environments, reactions such as ether bond breaking may occur.
(2) Arsenic, whose chemical name is arsenic trioxide ($As_2O_3 $), is a highly toxic inorganic compound. Arsenic is usually white powder or crystalline in appearance, odorless and tasteless. From a chemical point of view:
1. ** Oxidation and Reductivity **: Arsenic in arsenic is in the + 3 valence state, in the intermediate valence state, both oxidizing and reducing. When encountering strong reducing agents, such as the new ecological hydrogen produced by the reaction of zinc and acid, arsenic can be reduced to hydrogen arsenide ($AsH_3 $) gas, which is highly toxic and has a garlic odor. When encountering strong oxidizing agents, such as potassium permanganate, etc., + 3-valent arsenic can be oxidized to + 5 valence.
2. ** Acid-alkaline **: Arsenic trioxide has amphoteric properties, which can react with both acids and bases. When reacting with acids, it is similar to basic oxides, such as reacting with hydrochloric acid to produce arsenic trichloride ($AsCl_3 $) and water; when reacting with bases, it is similar to acidic oxides, such as reacting with sodium hydroxide to produce sodium arsenite ($Na_3AsO_3 $) and water.
Arsenic was often used as a poison in ancient times. Due to its severe toxicity, it will destroy some cellular respiratory enzymes after entering the human body, so that tissue cells cannot obtain oxygen and die; it strongly stimulates the gastrointestinal mucosa, causing mucosa to ulcerate and bleed; it destroys blood vessels, causes bleeding, and destroys the liver. In severe cases, it will die due to respiratory and circulatory failure. However, in modern medicine, after strict control and special treatment, arsenic can also be used to treat certain diseases, such as leukemia.

Dimethyloxymethyl, this substance is a rare medicine commonly used by alchemists. It has a wide range of uses and has extraordinary uses in many fields.
In the refining of medicinal pills, dimethyloxymethyl can be used as a key medium to promote the smooth fusion of various spiritual materials. Because the refining of medicinal pills requires precise control of the ratio and fusion process of various materials, this medicine can adjust the characteristics of materials, make the medicinal power more condensed, and improve the quality and efficacy of medicinal pills. Many high-quality medicinal pills rely on the power of this medicine.
In the field of talisman drawing, dimethyloxymethyl is also indispensable. The drawing of talismans pays attention to the infusion of spiritual energy and the bearing of runes. This medicine can enhance the affinity of the talisman paper to spiritual energy, making it easier to store and release spiritual energy from the drawn talismans. With the assistance of talismans, the power of the talismans can be increased, and the stability is better, and the spiritual energy is not easy to dissipate due to external factors.
In the arrangement of the array, dimethyl oxy methyl also has unique effects. The operation of the array needs to build a stable spiritual power cycle. This medicine can optimize the flow path of spiritual power and stabilize the foundation of the array. By reasonably integrating it into the formation materials, the arranger can make the formation exert more powerful power. Whether it is a defensive formation, an attack formation, or a spirit gathering formation, this medicine can be used to improve the effect of the formation.
However, although this medicine has infinite uses, it needs to be used with caution. Due to its unique characteristics, if used improperly, many accidents may occur. When refining pills, the dosage is wrong, or the pill will explode; when drawing symbols, the control is not good, and the talisman may be disordered and invalid; when setting up a formation, the formation may collapse and backlash. Therefore, those who use this medicine, when they are familiar with its nature and accurately grasp it, can exert its maximum effect and help their own practice and various affairs.

There are many ways to synthesize dioxobenzyl.
First, benzyl alcohol is used as the starting material. Benzyl alcohol is treated with halogenating agents such as phosphorus trihalide or thionyl chloride to obtain halogenated benzyl. The halogenated benzyl is then reacted with the dioxanion, which can be formed from the corresponding dioxy compound by alkali action. The reaction is carried out in a suitable solvent, such as acetone or acetonitrile, and the nucleophilic substitution is carried out to obtain dioxobenzyl.
Second, aromatics and dioxhalides are used as materials. Aromatics react with dioxides under the catalysis of Lewis acids such as aluminum trichloride. The electron cloud density of aromatics has a great influence on the reaction, and electron-rich aromatics are more likely to react. This reaction can construct the structure of dioxobenzyl, but it is necessary to pay attention to control the reaction conditions to prevent the formation of multiple substituted products.
Or, the reaction of aldehyde or ketone with dioxy-related reagents. For example, alaldehyde or ketone and dioxy compounds with active hydrogen can be formed by condensation reaction under alkali catalysis. The reaction mechanism is nucleophilic addition-elimination, and the base can take away active hydrogen, making the reagent nucleophilic and attacking the carbonyl of aldehyde or ketone.
In addition, there are transition metal catalysis methods. Using transition metal complexes such as palladium and copper as catalysts, halogenated aromatics or alkenyl halides are coupled with dioxy-related nucleophiles, and dioxy benzyl can be precisely synthesized. Such methods have good selectivity and mild conditions, and are increasingly used in the synthesis of complex dioxybenzyl compounds.
Each method has its advantages and disadvantages. According to the availability of raw materials, the purity of the product and the difficulty of reaction conditions and other factors, the appropriate method is selected for the synthesis of dioxybenzyl.

Dioxyethyl, the name of the group in the chemical. However, this name may be wrong, and I have not heard of such an accurate chemical expression. It is suspected that it is dioxethyl and the like.
For saltpeter, when storing and transporting, many matters should be paid attention to. Although the "Tiangong Kaiwu" does not elaborate on the storage and transportation of saltpeter, it is deduced from common sense and the method of storage and transportation of other things in ancient times, and several can be obtained.
The first weight is moisture-proof. Saltpeter is easily soluble in water. If it encounters moisture, it is easy to agglomerate and deteriorate, and it loses its effectiveness. Therefore, the storage place must be a dry place, or sealed with tiles, bamboo tubes, etc., to avoid contact with water vapor. Ancient treasures are mostly dug in earthen cellars and selected highlands, so that moisture cannot invade. When transporting, it is also necessary to cover with oil cloth, insect leaves, etc., to prevent rain on the way.
The second time is fire prevention. Saltpeter has strong flame-supporting properties, and it is easy to cause fires and even explosions in case of open flames and hot topics. In the storage place, fireworks are strictly prohibited, and flammable objects should not be placed around. During transportation, escorts should also beware of fire, and stay away from stoves, fire sickles and other igniting appliances.
Furthermore, store in isolation. Saltpeter should not be mixed with acids, flammable substances, organic substances, etc. Because of its lively chemical nature, it is easy to react chemically with other objects, resulting in danger. Ancient treasures are often divided into categories and placed in one place in an orderly manner to prevent them from disturbing each other.
Where saltpeter is stored and transported, special personnel should be set up to take care of it. Always check its condition, and if there is any dampness, agglomeration, etc., dispose of it in time. The escort also needs to choose a cautious and familiar person, and take care of it diligently on the way to ensure the safe arrival of saltpeter. Only in this way can the saltpeter be stored and transported to avoid all risks and ensure its quality and safety.