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What is the Chinese name for (r) -2-iodo-3- (iodomethyl) but1-ene?
(R) -2 -iodine-3- (iodomethyl) butyl-1-ene This organic compound, according to the ancient saying of "Tiangong Kaiwu", can be named as follows:
Look at this compound, with butene as the group, the alkene, the hydrocarbon containing carbon-carbon double bonds is also. In the main chain of butene, on the second carbon, there is an iodine atom, which is the appearance of halogen atom substitution. In the third carbon, there is an iodine methyl group, the so-called iodine methyl, which is replaced by iodine.
and is referred to as (R), which is based on the configuration of the chiral carbon atom. Chiral ones, like human hands, seem similar, but they are difficult to overlap. According to the rules of organic chemistry, the order of the linking groups of the chiral central atom is judged to be the (R) configuration clockwise.
Therefore, from a comprehensive perspective, this compound is named (R) -2 -iodine-3- (iodomethyl) butyl-1-ene, which not only indicates its main structure of the carbon chain, but also indicates the position of the substituent and the chiral configuration. It is indispensable for the identification of organic chemistry.
What is the molecular structure of (r) -2-iodo-3- (iodomethyl) but1-ene?
The molecular structure of (R) -2-iodine-3- (iodomethyl) butyl-1-ene is as follows. This compound belongs to the alkene class, contains a one-carbon-carbon double bond, and has a specific substituent distributed on the carbon chain.
Its main chain is a butene structure containing four carbon atoms. At position 2 of the main chain, there is an iodine atom attached. At position 3, it is not a simple atomic substitution, but an iodomethyl (-CH ² I) group attached.
Regarding its stereochemistry, the (R) label indicates that this compound has a specific chiral configuration. According to the Cahn-Ingold-Prelog rule, the atoms or groups around the chiral center at position 2 are sorted to determine that their stereochemistry is (R) type.
From the perspective of spatial structure, the double bond part determines that the molecule has a certain planarity, while the spatial orientation of the iodine atom at position 2 and the iodine methyl at position 3 is restricted by the (R) configuration, and forms a specific arrangement in space, which is different from the spatial distribution of the (S) configuration. Thus, (R) -2 -iodine-3- (iodomethyl) butyl-1-ene has a unique molecular structure composed of carbon-carbon double bonds, iodine atoms and iodomethyl groups, etc. In terms of reactivity and properties of organic chemistry, due to these structural characteristics and show specific performance.
What are the physical properties of (r) -2-iodo-3- (iodomethyl) but1-ene?
(R) -2-iodine-3- (iodomethyl) butyl-1-ene is an organic compound. It has various physical properties, let me explain in detail for you.
First of all, its phase state and color, under normal circumstances, this compound is mostly colorless to light yellow liquid, the view is clear, slightly flowing state. The reason why it is in this state is determined by the intermolecular force and structure. The structure of the molecule gives it a specific spatial arrangement, resulting in a balance of attractive force and repulsion between molecules, and it is in the shape of a liquid.
times and boiling point, the boiling point of this substance is quite high, about a specific temperature range. The boiling point is closely related to the intermolecular force. The iodine atom in the molecule, due to its large atomic weight, enhances the intermolecular dispersion force. To make the molecule break free from the liquid phase bondage and turn into the gas phase, more energy is required, so the boiling point is higher.
Furthermore, in terms of its density, compared with water, this compound has a higher density. If it is put into water, it will sink to the bottom. Because the iodine atom in the molecule is heavy, it increases the mass per unit volume, so the density is higher than that of water.
Solubility is also an important property. In organic solvents, such as alcohols and ethers, (R) -2-iodine-3- (iodomethyl) butyl-1-ene is quite soluble. This is due to the principle of "similarity and miscibility". Its molecular structure has similar polar or non-polar characteristics to that of organic solvent molecules, so it can be mixed with each other and evenly dispersed.
also has a refractive index, which has a specific refractive index value. The refractive index reflects the change in the speed of light propagation in it, which is closely related to the molecular structure and the distribution of electron clouds. Its specific structure causes the speed change to be a specific value when light propagates in it, which in turn is manifested as a unique refractive index.
Such physical properties are of great significance in both chemical research and practical applications, and can provide a basis for separation, purification, and identification operations.
What are the main uses of (r) -2-iodo-3- (iodomethyl) but1-ene?
(R) -2-iodine-3- (iodomethyl) butyl-1-ene is an organic compound. Its main use is due to the key raw materials in organic synthesis.
In the field of organic synthesis, this compound can be used as the cornerstone of complex organic molecules. Due to the presence of iodine atoms, alkenyl groups and iodomethyl groups in its molecular structure, it has unique reactivity. Iodine atoms are active and can initiate a variety of chemical reactions, such as nucleophilic substitution reactions, which can enable other functional groups to replace iodine positions, thereby forming new carbon-carbon bonds or carbon-heteroatomic bonds, which can help organic chemists create compounds with specific structures and functions. The
alkenyl group is also a reactive active center, which can participate in the addition reaction and combine with electrophilic or nucleophilic reagents to expand the carbon chain structure of the molecule. And because of the existence of chiral centers, the (R) configuration endows this compound with special applications in asymmetric synthesis, allowing chemists to prepare chiral enriched products, which is of great significance in pharmaceutical chemistry. Drugs have many chirality and different chiral configurations, and their biological activities may be very different. (R) -2-iodine-3- (iodomethyl) butyl-1-ene can be used as a key chiral block for the synthesis of specific chiral drugs, helping to improve the efficacy and safety of drugs.
In conclusion, (R) -2 -iodine-3- (iodomethyl) butyl-1-ene has important uses in organic synthesis and medicinal chemistry due to its unique structure and reactivity. It is an important substance for the creation of new organic compounds and drugs.
What are the synthesis methods of (r) -2-iodo-3- (iodomethyl) but1-ene?
To prepare (\ (r \) ) - 2 -iodine-3- (iodomethyl) butyl-1-ene, there are many ways to synthesize it.
One of them can be started from suitable enol derivatives. First, find an enol substrate with a specific configuration, and use a halogenated reagent, such as an iodine halogenated reagent, to halogenate it at the enol double bond. During the reaction, pay attention to the amount of reagent, the reaction temperature and the choice of solvent. For example, choose a mild solvent, such as dichloromethane, and add the halogenated reagent slowly in a low temperature environment to facilitate the reaction to generate the target product, and it can better maintain the chiral central configuration.
Second, a butene derivative containing a suitable substituent can also be used as a starting material. First, a methyl group is introduced through a specific step, and then an iodine atom is introduced at a specific position. For example, the butene derivative is first alkylated, and a suitable alkylating reagent is used to access the methyl group at a suitable position under the catalysis of a base. Subsequently, through a halogenation reaction, an iodine source, such as potassium iodide in combination with a suitable oxidizing agent, is used to introduce iodine atoms at the desired check point. This process requires fine regulation of the reaction conditions to achieve the desired stereochemical configuration.
Furthermore, the strategy of olefin metathesis reaction can be considered. Find a suitable alkenyl iodide and another olefin substrate with a specific structure, and react under the action of an olefin metathesis catalyst. Select an efficient and selective catalyst, precisely control the reaction conditions, such as temperature, reaction time, etc., so that the reaction generates (\ (r \) ) - 2 -iodine-3- (iodomethyl) butyl-1-ene as expected. After the reaction, it needs to be separated and purified to obtain a pure product.