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N-Bromosuccinimide
Kemia Nomo |
N-bromosuccinimide |
Sinonimoj |
Bromosuccinimide;Succinbromimide; 1-Bromo-2,5-pyrrolidinedione |
CAS No. |
128-08-5 |
Molekula formulo |
C4H4BrNO2 |
Molekula pezo |
177.98 |
Molekula Strukturo |
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Detaloj |
Appearance: white to light yellow powder Purity: 99.0% min. |
Ĉefa Apliko |
It is mainly used as brominating agent and catalyst. In selective organic synthesis of phenols, aromatic amines, aromatic amines, acetyl methyl ketone, alkene, alkyne, alcohol and other substances of bromide.
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- Allylic and Benzylic Bromination: N - Bromosuccinimide is widely used for allylic and benzylic bromination reactions. In these reactions, the bromine atom from NBS selectively substitutes the hydrogen atom at the allylic or benzylic position of an organic molecule. This is a crucial reaction in the synthesis of many organic compounds, including natural products, pharmaceuticals, and agrochemicals. For example, in the synthesis of certain anti - inflammatory drugs, allylic bromination using NBS is a key step in introducing a specific functional group that is essential for the drug's activity.
- Heterocyclic Compound Synthesis: It is also used in the synthesis of heterocyclic compounds. NBS can participate in reactions that lead to the formation of various heterocyclic rings, such as pyrroles, furans, and thiophenes. These heterocyclic compounds are important building blocks in organic chemistry and have applications in areas such as materials science, drug discovery, and catalysis.
- Polymer Modification: In polymer science, N - Bromosuccinimide can be used to modify polymers. By reacting with polymers containing reactive sites, it can introduce bromine atoms onto the polymer chains. This can change the polymer's properties, such as its solubility, adhesion, and reactivity. For example, in the modification of polymers for use in coatings or adhesives, the introduction of bromine using NBS can enhance the polymer's performance by improving its ability to bind to substrates.
- Synthesis of Functional Polymers: NBS can be used in the synthesis of functional polymers. For instance, in the preparation of polymers with pendant bromine groups, which can be further reacted to introduce other functional groups. These functional polymers can have applications in areas such as ion - exchange resins, sensors, and biodegradable materials.
- Intermediate in Drug and Pesticide Synthesis: N - Bromosuccinimide serves as an important intermediate in the synthesis of pharmaceutical and agrochemical compounds. In drug synthesis, it can be involved in reactions that build the complex molecular structures required for drugs. Similarly, in the synthesis of pesticides, it can participate in reactions to introduce specific functional groups that are essential for the pesticidal activity. Its use in these industries helps in the development of new drugs and pesticides with improved efficacy and selectivity.
- N - Bromosuccinimide is harmful if swallowed, inhaled, or absorbed through the skin.
- It is a strong oxidizing agent and can cause severe burns and eye damage. Contact with combustible materials can pose a fire hazard.
- Prolonged or repeated exposure may have adverse effects on health.
- When handling this product, always wear appropriate personal protective equipment, including chemical - resistant gloves, safety goggles with side - shields, and a lab coat or protective apron.
- Work in a well - ventilated area, preferably under a fume hood, to avoid inhalation of dust or fumes.
- In case of contact with skin, immediately remove contaminated clothing and rinse the affected area with plenty of water for at least 15 minutes. Seek medical attention promptly. If the compound gets into the eyes, rinse the eyes with copious amounts of water for at least 15 minutes, lifting the eyelids occasionally, and then seek immediate medical help.
- Keep away from heat, sparks, and open flames. Store it in a cool, dry place away from flammable and combustible materials.
- Store N - Bromosuccinimide in a cool, dry place, away from direct sunlight and heat sources.
- Keep it in a tightly sealed container to prevent moisture absorption and contact with air, which could potentially affect its chemical properties.
- Store it separately from incompatible substances such as reducing agents, flammable materials, and strong acids to avoid dangerous reactions.