3-bromo-4-methylthiophene
3-bromo-4-methylthiophene
CAS: 30318-99-1
Molecular Formula: C5H5BrS
3-bromo-4-methylthiophene - Names and Identifiers
| Name | 3-bromo-4-methylthiophene |
| Synonyms | 3-BROMO-4-METHYLTHIOPHENE 3-Methyl-4-bromothiophene 3-bromo-4-methylthiophene Thiophene, 3-bromo-4-methyl- |
| CAS | 30318-99-1 |
| InChI | InChI=1/C5H5BrS/c1-4-2-7-3-5(4)6/h2-3H,1H3 |
| InChIKey | MBUSOPVRLCFJCS-UHFFFAOYSA-N |
3-bromo-4-methylthiophene - Physico-chemical Properties
| Molecular Formula | C5H5BrS |
| Molar Mass | 177.06 |
| Density | 1.584 g/mL at 25 °C (lit.) |
| Boling Point | 179-183 °C/770 mmHg (lit.) |
| Flash Point | 172°F |
| Vapor Presure | 1.18mmHg at 25°C |
| Appearance | Liquid |
| Color | Clear colorless to yellow |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Refractive Index | n20/D 1.579(lit.) |
3-bromo-4-methylthiophene - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R20//21/22 - |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| HS Code | 29349990 |
3-bromo-4-methylthiophene - Introduction
3-bromo-4-methylthiophene(3-bromo-4-methylthiophene) is an organic compound with the chemical formula C5H5BrS. It is a yellow to orange liquid with a strong odor.
3-bromo-4-methylthiophene has a wide range of applications in organic synthesis. It can be used as an intermediate in the field of medicine and plays an important role in the synthesis of drugs or pharmaceutical raw materials. In addition, it can also be used to prepare other organic compounds, such as thiophene compounds, heterocyclic compounds, etc.
There are various methods for preparing 3-bromo-4-methylthiophene, and common methods include in-situ preparation and bromide substitution. The in situ preparation is obtained by reacting methyllithium with cuprous bromide in the presence of an antimony (III) hydride ammonia complex of thiophene. Bromide substitution law is based on 3-bromo-4-chlorothiophene as the starting material, through the reaction and bromoacetonitrile to generate thiophenyl methyl sulfide, and exposed to copper chloride in ammonia solution for bromination.
Regarding safety information, 3-bromo-4-methylthiophene is an organic compound with certain potential risks. Appropriate safety measures should be taken during use or storage, such as wearing protective gloves, goggles and protective clothing. It should also be kept away from fire and high temperature, and avoid contact with oxidants, strong acids or strong bases. In case of contact with skin, eyes or by taking, rinse immediately with plenty of water and seek medical help. Specific safe operation and handling methods should be determined according to specific experimental conditions and laboratory safety guidelines.
3-bromo-4-methylthiophene has a wide range of applications in organic synthesis. It can be used as an intermediate in the field of medicine and plays an important role in the synthesis of drugs or pharmaceutical raw materials. In addition, it can also be used to prepare other organic compounds, such as thiophene compounds, heterocyclic compounds, etc.
There are various methods for preparing 3-bromo-4-methylthiophene, and common methods include in-situ preparation and bromide substitution. The in situ preparation is obtained by reacting methyllithium with cuprous bromide in the presence of an antimony (III) hydride ammonia complex of thiophene. Bromide substitution law is based on 3-bromo-4-chlorothiophene as the starting material, through the reaction and bromoacetonitrile to generate thiophenyl methyl sulfide, and exposed to copper chloride in ammonia solution for bromination.
Regarding safety information, 3-bromo-4-methylthiophene is an organic compound with certain potential risks. Appropriate safety measures should be taken during use or storage, such as wearing protective gloves, goggles and protective clothing. It should also be kept away from fire and high temperature, and avoid contact with oxidants, strong acids or strong bases. In case of contact with skin, eyes or by taking, rinse immediately with plenty of water and seek medical help. Specific safe operation and handling methods should be determined according to specific experimental conditions and laboratory safety guidelines.
Last Update：2024-04-09 20:52:54
