1 Hydroxy 1 3 Dioxo 3h Benz D 1 2 Iodoxol 1 Hydroxy 3h Benz D 1 2 Iodoxol 1 3 Dione

1-Hydroxy-1,3-dioxo-3H-benz [d] [1,2] iodoxol and 1-hydroxy-3H-benz [d] [1,2] iodoxol-1,3-dione are actually the same substance, and the Chinese name is 1-hydroxy-1,3-dioxo-3H-benzo [d] [1,2] iodoxacyclopentadiene, often referred to as IBX reagent. This reagent has a wide range of uses in the field of organic synthesis.
First, it plays a significant role in the oxidation reaction of alcohols. It can oxidize primary alcohols to formaldehyde efficiently, and secondary alcohols to ketones efficiently. The advantage is that the reaction conditions are relatively mild, without the need for a harsh reaction environment, and for some substrates that are sensitive to reaction conditions, it can also achieve ideal oxidative conversion. For example, in the synthesis of fragrances, for some compounds containing alcohol hydroxyl groups and demanding oxidation conditions, IBX reagents can precisely oxidize alcohol hydroxyl groups to corresponding carbonyl groups, thus effectively constructing the key structure of fragrance molecules.
Second, IBX reagents are also quite effective in building carbon-carbon double bonds. It can successfully generate carbon-carbon double bonds by oxidizing and eliminating reactions on specific alcohol substrates. In the field of total synthesis of natural products, this feature is frequently used. For example, when synthesizing some biologically active terpenoids, IBX reagents are used to realize the construction of key carbon-carbon double bonds, which lays the foundation for the subsequent construction of complex natural product structures.
Third, IBX reagents can also be used for oxidation to construct carbon-heteroatom double bonds. In the synthesis of heteroatom compounds containing nitrogen and sulfur, the alcohol hydroxyl groups connected to heteroatoms can be oxidized to form carbon-nitrogen double bonds or carbon-sulfur double bonds and other structures, which is of great significance for enriching the types of organic compounds and expanding the organic synthesis path. In pharmaceutical chemistry research, this reaction can be used to synthesize heterocyclic compounds with specific pharmacological activities, providing key intermediates for new drug development.

1 - hydroxy - 1,3 - dioxo - 3H - benz [d] [1,2] iodoxol and 1 - hydroxy - 3H - benz [d] [1,2] iodoxol - 1,3 - dione refer to the same substance, which is an organic compound, often referred to as IBX. The physical properties of this substance are as follows:
In appearance, the normal is an orange-yellow crystalline solid, with bright color and high recognition.
The melting point is quite critical, about 230 - 234 ° C. In this temperature range, the substance melts from a solid state to a liquid state. This property is of great significance for its morphological control and related reaction conditions under specific temperature environments.
In terms of solubility, slightly soluble in common organic solvents, such as dichloromethane, chloroform, etc. This characteristic determines the choice of solvent when it participates in the reaction, and it is necessary to choose a solvent that can be moderately dispersed and dissolved to ensure the smooth progress of the reaction.
In terms of stability, it is relatively stable, but when it encounters strong reducing agents, strong acids, and strong bases, the structure will change and chemical reactions will occur. When storing, avoid such substances and place them in a dry and cool place to prevent them from deteriorating due to environmental factors and ensure that their chemical properties are constant, so as to play a stable role in various organic synthesis reactions.

1 - hydroxy - 1,3 - dioxo - 3H - benz [d] [1,2] iodoxol and 1 - hydroxy - 3H - benz [d] [1,2] iodoxol - 1,3 - dione are actually the same substance, both are a class of iodine-containing organic compounds, which are widely used in the field of organic synthesis. Its chemical properties are as follows:
1. ** Oxidative property **: The iodine in this compound is in a high valence state, causing it to be oxidized. In many organic reactions, it can be used as an oxidant, such as oxidizing alcohols to form alters or ketones. For example, primary alcohol can be oxidized to aldehyde and secondary alcohol can be oxidized to ketone, and the oxidation reaction has a certain selectivity, which can precisely act on specific functional groups and has little interference with other functional groups in the molecule.
2. ** Electrophilicity **: Due to the electron cloud distribution of iodine atoms in the molecular structure, the compound exhibits electrophilicity. In electrophilic substitution reactions, it can be used as an electrophilic reagent to attack electron-rich aromatic rings and other substrates. For example, when reacting with benzene rings, iodine atoms will replace hydrogen atoms on the benzene ring to generate iodine-containing aromatic compounds. This reaction is of great significance in building the structure of iodine-containing organic molecules.
3. ** Stability and Reactivity **: Under normal conditions, 1-hydroxy-1,3-dioxo-3H-benz [d] [1,2] iodoxol is relatively stable, but under specific conditions, such as the presence of specific solvents, temperatures and catalysts, it can exhibit good reactivity. Heating up or adding suitable catalysts can accelerate the reaction rate with substrates and realize a variety of organic synthesis conversions, which provides flexibility for the design and optimization of organic synthesis routes.
4. ** Acid-base properties **: Hydroxyl groups in the molecule can participate in acid-base reactions. Under basic conditions, hydroxyl groups may be deprotonated to form corresponding negative ions, which can act as nucleophiles in some reactions and react with electrophiles, thus expanding the application range of the compound in organic synthesis and providing more possibilities for the construction of complex organic molecular structures.

1-hydroxy-1,3-dioxo-3H-benz [d] [1,2] iodoxol and 1-hydroxy-3H-benz [d] [1,2] iodoxol-1,3-dione are actually the same substance, and the Chinese name is often 1-hydroxy-1,3-dioxo-3H-benzo [d] [1,2] iodoxacyclopentene, which is an important intermediate in organic synthesis. There are many preparation methods, and the common ones are briefly described below:
Starting material is o-iodobenzoic acid. The first method is to oxidize o-iodobenzoic acid to o-iodobenzoic anhydride with an appropriate oxidizing agent, such as hydrogen peroxide, m-chloroperoxybenzoic acid, etc. In this process, the force of the oxidizing agent causes oxidative condensation between the carboxyl groups in the benzoic acid structure, and the anhydride group is formed. The reaction conditions are quite critical, and the temperature, reaction time and oxidant dosage need to be finely regulated. Generally speaking, the reaction is carried out in an organic solvent, and the temperature is usually controlled from room temperature to a moderate heating range, such as 20-60 degrees Celsius, for several hours to ten hours, depending on the specific reaction conditions.
O-iodobenzoic anhydride is obtained, and then reacts with alcohols, such as methanol and ethanol, in the presence of a catalyst. The catalyst is often sulfuric acid, p-toluenesulfonic acid and the like. In this step, the anhydride group and the alcohol undergo alcoholysis to form the corresponding ester. The reaction temperature should also be paid attention to, usually at 50-100 degrees Celsius, and the reaction should be reacted for several hours to achieve good conversion.
The resulting ester products are then hydrolyzed. Hydrolysis is usually performed under basic conditions, such as sodium hydroxide and potassium hydroxide solutions, to break the ester bond and generate the corresponding carboxylate. After that, it is acidified with acids, such as hydrochloric acid and sulfuric acid, to obtain the target product 1-hydroxy-1,3-dioxo-3H-benzo [d] [1,2] iodoxacyclopentene. The hydrolysis reaction temperature can be 50-80 degrees Celsius, and the duration also takes several hours.
Another method uses o-iodobenzaldehyde as the starting material. First oxidize o-iodobenzaldehyde to o-iodobenzoic acid. In this oxidation step, the oxidizing agent can be selected from potassium permanganate, potassium dichromate, etc. The reaction is carried out under appropriate solvent and acid-base conditions. After the oxidation is completed, the subsequent steps are similar to the method of using o-iodobenzoic acid as the starting material. Anhydride is formed first, and then the target product is obtained by alcoholysis and hydrolysis. When preparing this compound, the operation must be fine, the reaction conditions of each step are strictly controlled, and the separation and purification steps are also indispensable, so that high purity of 1-hydroxy-1,3-dioxo-3H-benzo [d] [1,2] iodoxacyclopentene can be obtained.

1-Hydroxy-1,3-dioxo-3H-benzo [d] [1,2] iodoxacyclopentene and 1-hydroxy-3H-benzo [d] [1,2] iodoxacyclopentene-1,3-dione, both of which are chemicals, must pay attention to many matters when using.
First, safety protection is essential. Both of these may be toxic, corrosive, or harmful to the human body. When taking it, you must wear protective clothing, such as lab clothes, gloves, goggles, etc., to prevent skin and eye contact. If inadvertently contact, should immediately rinse with plenty of water, and seek medical treatment according to the specific situation.
Second, the operating environment should not be ignored. It needs to be operated in a well-ventilated place, preferably in a fume hood to avoid the accumulation of harmful gases, ensure that the air quality of the operating environment is up to standard, and prevent the inhalation of harmful gases in the body and damage health.
Third, storage should also be paid attention to. It should be placed in a dry, cool and ventilated place, away from fire and heat sources, and stored separately from other chemical substances, especially avoid mixing with reducing substances, flammable substances, etc., to prevent dangerous chemical reactions.
Fourth, the use process must strictly follow the operating procedures. Accurately control the dosage to avoid excessive use causing the reaction to go out of control or produce unnecessary side reactions. During the experiment, carefully observe the reaction phenomenon. If there is any abnormality, immediately stop the operation and dispose of it properly.
Fifth, waste disposal should not be slack. The used residual substances and reaction waste should be properly disposed of in accordance with relevant regulations and cannot be discarded at will. The chemical waste treatment process should be followed to reduce the harm to the environment.
In conclusion, when using 1-hydroxy-1,3-dioxo-3H-benzo [d] [1,2] iodoxacyclopentene and 1-hydroxy-3H-benzo [d] [1,2] iodoxacyclopentene-1,3-dione, when safety is the top priority, careful operation and standardized disposal can achieve the expected experimental or production purposes, and ensure the safety of personnel and the environment.