2-[2-[2-(diethylamino)-4-(1,1-dimethylethyl)-5-thiazolyl]diazenyl]-1-[(4-ethenylphenyl)methyl]- 1H-Imidazole-4,5-dicarbonitrile

This question seeks the chemical structure of 2,5-dimethyl-4- (2-hydroxyethyl) -4- (1,1-dimethylethyl) -5-nitro-1- (4-ethylphenoxy) -1H-indole-4,5-dicarboxylic acid. This structure is complex and contains polyfunctional groups and substituents.
Anterior indole core structure, which is a nitrogen-containing heterocyclic ring with aromatic properties. The 1-position hydrogen of 1H-indole is replaced by 4-ethylphenoxy, and this substituent has molecular hydrophobicity and steric hindrance. The 4,5-dicarboxylic acid indicates that the carboxyl groups at the 4 and 5 positions are acidic and can participate in the reactions such as salt formation and esterification. The 2-hydroxyethyl group at the
position contains hydroxyl groups, which can form hydrogen bonds and increase molecular hydrophilicity and reactivity. The 5-nitro group has strong electron-absorbing properties, which affects the distribution of molecular electron clouds and chemical properties. The 4-position of
is more complex, with two substituents: 2-hydroxyethyl and 1,1-dimethylethyl (tert-butyl). Tert-butyl has a large steric barrier, which affects the molecular configuration and reaction selectivity.
Overall, this compound has unique physical and chemical properties due to its diverse substituents, and may have potential applications in the fields of organic synthesis and medicinal chemistry, such as as pharmaceutical intermediates, where complex active molecular structures are constructed by the reactivity of various functional groups.

As an organic compound, 4,5-diethylbenzene has the following physical properties:
First, about the state and color. Under the common conditions of normal temperature and pressure, 4,5-diethylbenzene appears as a colorless and transparent liquid form, like clear water, without obvious color interference, pure and clear.
Second, about the smell. It exudes a unique aromatic smell, which is similar to the smell of many aromatic compounds. This aromatic smell can be used as one of the characteristics to identify it to a certain extent, but it should be noted that if the concentration of such aromatic smell in the air is too high, it may have adverse effects on human health.
Third, in terms of boiling point. Its boiling point is in a relatively high range, about 187 ° C - 189 ° C. This shows that 4,5-diethylbenzene needs to be converted from liquid to gaseous at a higher temperature, reflecting its relative stability in the liquid state. In the process of industrial production and storage, this characteristic determines the difficulty of evaporation and the requirements for temperature conditions.
Fourth, the melting point. The melting point of 4,5-diethylbenzene is low, about -48 ° C. This means that it can easily maintain a liquid state at room temperature, and only when the temperature is significantly reduced to close to the melting point will it gradually solidify into a solid state. This property is of great significance in the temperature control of its transportation and storage.
Fifth, density characteristics. The density of 4,5-diethylbenzene is slightly smaller than that of water, about 0.86 g/cm ³. This density difference makes it float above the water surface when 4,5-diethylbenzene is mixed with water, forming a significant stratification phenomenon, which can be exploited in related separation and purification processes.
Finally, solubility characteristics. 4,5-diethylbenzene is insoluble in water due to its strong non-polar molecular structure, while water is a polar solvent. According to the principle of "similarity and miscibility", the two are difficult to dissolve each other. However, 4,5-diethylbenzene is soluble in many organic solvents, such as ethanol, ether, acetone, etc. In the field of organic synthesis, this solubility provides convenient conditions for its participation in various chemical reactions. Suitable organic solvents can be used to prepare the reaction system to promote the smooth progress of the reaction.

Among the wonderful things and processes involved in "Tiangong Kaiwu", although there is no direct mention of such a complicated and delicate chemical nomenclature as described in the title. However, my generation can try to make a brief inference about the use of "2 - [2 - [2 - (diethoxy) - 4 - (1,1 - dimethylethoxy) - 5 - nitro] diazoxy] - 1 - [ (4 - ethoxy benzyl) methyl] - 1H - pyrazole - 4,5 - dicarboxylic acid" from the chemical process principles and material application ideas contained in the book.
"Tiangong Kaiji" has many records on the characteristics, transformation and application of various substances. In the field of chemical technology, its use is often explored according to the characteristics of substances. This complex compound has many special groups, each group may endow it with unique chemical and physical properties.
Diethoxy, dimethylethoxy and other alkoxy groups, or enhance the solubility of the compound in organic solvents, and affect its intermolecular force and stability. Nitro is a strong electron-absorbing group, which can significantly change the distribution of the electron cloud of the compound, affect its chemical activity and reaction check point, or make the compound have certain oxidation or reactivity. In organic synthesis or as a key reaction check point, participate in various substitution, addition and other reactions. Diazoxy groups have high reactivity and are often used as diazo sources in organic synthesis to participate in the construction of complex molecular structures. Ethoxy benzyl groups are connected to methyl groups, or affect the spatial structure and hydrophobicity of compounds, and the benzyl group structure may endow it with certain aromaticity and special reactivity. Pyrazole rings are nitrogen-containing heterocycles with certain biological activity and coordination ability, and have many applications in pharmaceutical chemistry, materials science and other fields. Dicarboxylic acid groups are acidic and can participate in acid-base reactions, salt-forming reactions, or used to coordinate with metal ions to construct coordination compounds, or used as monomers in polymerization reactions to form high-molecular polymers.
In summary, according to the thinking of "Tiangong Kaiji", this compound may be used as a key intermediate in the field of fine organic synthesis to prepare organic materials and drug molecules with specific functions; or due to its unique structure and properties, it may find a place in the fields of material surface modification and catalytic reaction, and use its special groups to achieve specific functions and applications.

All your questions are related to chemical synthesis. The synthesis method of 2 - [2 - [2 - (diethoxy) - 4 - (1,1 - dimethylethyl) - 5 - quinolinyl] diazo] - 1 - [ (4 - ethoxybenzyl) methyl] - 1H - pyrazole - 4,5 - dicarboxylic acid is quite particular.
To synthesize this substance, you can think of it from the following methods. First, you can find the raw material containing diethoxy group first, and add 4- (1,1-dimethyl ethyl) group after clever reaction. This step requires accurate control of the reaction conditions, such as temperature, catalyst dosage, etc., so that the reaction proceeds in the direction we want.
Then, 5-quinoline group is introduced. This process also needs to be cautious. Due to its complex structure, different parts of the reaction activity are different, and there is a slight difference in the pool, so the desired product cannot be obtained. The addition of diazo groups is a key step. The diazotization reaction requires strict control of pH value and reaction time in order to make the diazo group smoothly connected and maintain its stability.
Furthermore, the construction of 1- [ (4-ethoxybenzyl) methyl] also requires fine design. This purpose can be achieved by the reaction of suitable halogenates with corresponding nucleophiles. The formation of the 1H-pyrazole-4,5-dicarboxylic acid part can be achieved through a multi-step reaction, first building a pyrazole ring, and then introducing a carboxyl group at a suitable check point.
Or there are other methods, such as starting with a key intermediate and gradually splicing the structure of each part, just like a craftsman building a building, one brick and one tile need to be carefully placed. The way of synthesis is ever-changing, and it is necessary to repeatedly experiment, explore, and weigh the advantages and disadvantages of each method in order to find the optimal synthesis path and obtain this target product.

2 - [2 - [2 - (diethoxy) - 4 - (1,1 - dimethylethoxy) - 5 - tert-butyl] diazoyl] - 1 - [ (4 - ethoxy phenyl) methyl] - 1H - pyrazole - 4,5 - dicarboxylic acid, the relevant safety precautions for this compound are as follows:
First, because it contains diazo groups, it is active in nature and has poor stability. It is easily decomposed by heat, friction or impact, which can lead to explosion. During the operation, it is necessary to keep away from heat sources and fire sources to prevent vibration and impact, and be sure to handle it with care.
Second, most of the organic groups such as ethoxy, methyl, and tert-butyl in this compound are flammable. When storing and using, it is necessary to avoid contact with open flames and hot topic environments, and also to keep away from oxidants to prevent combustion or explosion accidents.
Third, due to the complexity of its structure, its toxicity is difficult to predict. When operating, it is necessary to wear appropriate protective equipment, such as gas masks, protective gloves, and protective glasses, to prevent skin contact, inhalation, or ingestion. Clean up in time after the operation.
Fourth, this compound may generate other unstable or toxic by-products due to changes in conditions during the reaction. Therefore, the whole operation should be carried out in an environment with good ventilation conditions, preferably in a fume hood to discharge harmful gases in time, and the waste generated by the reaction should be properly disposed of in strict accordance with regulations.