5-(TERT-BUTOXYCARBONYL)-4,5,6,7-TETRAHYDROTHIENO[3,2-C]PYRIDINE-2-CARBOXYLIC ACID

(Looking at your words, I seem to be asking about the main uses of hydroxy-4,5,6,7-tetrahydrobenzo [3,2-c] furan-2-carboxylic acid. This is a rather professional chemical-related question, and let me explain it in detail.)
Hydroxy-4,5,6,7-tetrahydrobenzo [3,2-c] furan-2-carboxylic acid has significant uses in the field of medicine. First, it can be used as a key intermediate for the synthesis of specific drugs. Many drugs for the treatment of chronic diseases require this substance as a starting material or an important structural fragment in the synthesis process. By means of organic synthesis, its structure can be modified and modified to obtain compounds with specific pharmacological activities, and then new drugs can be developed to bring good news to patients.
In the field of materials science, this compound also has potential applications. Because of its unique chemical structure, it may participate in the preparation of polymer materials with special properties. For example, by introducing it into the main chain or side chain of the polymer through chemical reactions, the material is endowed with unique physical and chemical properties, such as improving the solubility, thermal stability and biocompatibility of the material, thereby expanding the application of the material in biomedical materials, electronic materials and other fields.
In addition, in the study of organic synthetic chemistry, hydroxy-4,5,6,7-tetrahydrobenzo [3,2-c] furan-2-carboxylic acid is an extremely important synthetic block. Chemists have used its structural characteristics to carry out various reaction studies and explore novel synthesis methods and routes to enrich the types and structures of organic compounds and promote the development of organic synthetic chemistry.
(In summary, hydroxy-4,5,6,7-tetrahydrobenzo [3,2-c] furan-2-carboxylic acids play an important role in medicine, materials science and organic synthesis research, and play an indispensable role in modern chemistry-related fields.)

To prepare 2-carboxyl-5- (tert-butoxycarbonyl) -4,5,6,7-tetrahydrobenzofurano [3,2-c] pyridine, the following methods can be used:
First, the pyridine derivative containing the corresponding substituent is used as the starting material. First, a specific substitution reaction is performed on the pyridine ring, and a group that can be subsequently converted to a carboxyl group and a tert-butoxycarbonyl group is introduced. For example, halogen atoms are introduced at specific positions in the pyridine ring by halogenation reaction, and then metal-organic reagents, such as Grignard reagents or organolithium reagents, react with halogenated pyridine to introduce carboxyl-containing or carboxyl-convertible groups. At the same time, with the help of a suitable protective group strategy, tert-butoxycarbonyl is introduced. When constructing the structure of benzofuranopyridine, the formation of the desired ring system can be achieved by molecular close-loop reaction and regulated by appropriate reaction conditions. This process requires fine control of reaction conditions, such as temperature, solvent, catalyst, etc., to ensure reaction selectivity and yield.
Second, furan derivatives and pyridine derivatives are used as raw materials. First, the furan derivative and pyridine derivatives are connected by a condensation reaction to form a preliminary connection structure. In the condensation reaction, suitable dehydrating agents or coupling reagents can be selected to promote the combination of the two. After that, the resulting product is functionally transformed. Through oxidation, hydrolysis and other reactions, specific groups are converted into carboxyl groups, and corresponding methods are used to introduce tert-butoxycarbonyl groups. Then the core structure of benzofuranopyridine is constructed through cyclization reaction. In this route, the order and conditions of condensation reaction and functional group conversion are quite key to the optimization, which is related to the success or failure of the overall synthesis and efficiency.
Third, starting from simple aromatics and heterocyclic compounds, the target molecular skeleton is gradually built through multi-step reactions. First, through electrophilic substitution, nucleophilic substitution and other reactions, the substituents required to construct the target molecules are introduced into the aromatics and heterocyclic rings. Then, by using carbon-carbon bond formation reactions, such as palladium-catalyzed coupling reactions, etc., the structure of each part is connected to construct a rough molecular framework. Subsequently, the framework is modified by introducing carboxyl and tert-butoxycarbonyl, and completing the closed-loop reaction of benzofuranopyridine ring system. Although this strategy has many steps, it is highly flexible, and the reaction route and conditions can be flexibly adjusted according to the availability of raw materials and the controllability of the reaction.

(Note: Some of the statements in the question may be biased due to unclear and accurate understanding. The following will try to answer according to speculation)
Today there is (hydroxyethyl) -4,5,6,7-tetrahydrobenzo [3,2-c] furan, and 2-carboxylic acid is added to it. What are the physical and chemical properties of this compound?
(hydroxethyl) -4,5,6,7-tetrahydrobenzo [3,2-c] furan itself has certain commonalities of organic compounds. It contains furan rings and tetrahydrobenzo structures, which make the molecule rigid and planar. At room temperature, it may be solid or liquid, depending on the specific substituents and intermolecular forces. Insoluble or slightly soluble in water, due to the hydrophobicity of the molecule as a whole, but the presence of hydroxyethyl groups may increase its affinity with water.
When 2-carboxylic acid is added, the acidity of the compound is greatly increased due to the introduction of carboxyl groups. The carboxyl group can ionize hydrogen ions, and can exhibit acid-related chemical reactions in suitable solvents, such as neutralization with bases. And the carboxyl group has strong polarity, which can enhance the polarity of the molecule as a whole, causing its solubility to change or increase in polar solvents. In addition, the carboxyl group can participate in reactions such as esterification, which greatly enriches the chemical properties of the compound. In terms of physical properties, the melting point, boiling point or changes due to intermolecular forces, or the melting point increases due to the formation of hydrogen bonds between carboxyl groups.

I look at your question, it seems to be seeking the price range of (acetoxy) -4,5,6,7-tetrahydrobenzofuran [3,2-c] enone-2-carboxylic acid in the market. Sadly, the genus of "Tiangong Kaiwu" does not involve the price of this product. Because its book is detailed in the sources of agricultural and industrial arts and products, it does not cover the price of this fine chemical.
However, if you want to know the price of this product, you should look at the market conditions of the chemical industry. Such compounds are often involved in fields such as pharmaceuticals and chemical synthesis, and their price is determined by many factors. First, purity is the most important. Those with high purity, the price must be high; second, the output. If the product is abundant, the price is flat; on the contrary, if it is scarce, the price is high. And changes in market supply and demand also affect its price.
Today's chemical industry market is very complex, and it is difficult to estimate its price with certainty. Generally speaking, the price of such fine chemicals varies from tens to hundreds of yuan per gram depending on the purity and quantity. If it is a special high purity or customization, the price is more difficult to predict, or more than 1,000 yuan per gram.
Although I have not confirmed the answer in "Tiangong Kaiwu", according to the common sense of today's chemical industry, I will recommend this price for you, hoping to help you.

I would like to answer this question for you. To know the storage conditions of (acetoxy) -4,5,6,7-tetrahydrobenzo [3,2-c] furan-2-carboxylic acid, this is the key to the field of fine chemistry.
Looking at the structure of this compound, the (acetoxy) part has certain activity, and the tetrahydrobenzofuran ring system also has its characteristics. Generally speaking, such compounds containing ester groups (acetoxy groups can be regarded as part of ester groups) and specific aromatic ring structures need to be protected from heat and moisture.
Heat can cause reactions such as hydrolysis of ester groups, which can deteriorate compounds. Wet provides a medium for many chemical reactions and accelerates their decomposition or transformation. Therefore, it is better to store in a cool, dry place. < Br >
Furthermore, this compound may be sensitive to light, and the structure is changed due to the aromatic ring structure under light or luminescent chemical reaction. Therefore, it should also be stored away from light.
Or it can be placed in a brown bottle and stored in a low temperature environment, generally 2-8 ° C, so as to maintain its chemical stability to the greatest extent and ensure its quality for a long time. This is all inferred from the structure and common chemical properties of the compound, hoping to solve your confusion.