Ethyl bromoacetate with the CAS number 105 - 36 - 2 is a high - quality chemical product. Its molecular formula is C₄H₇BrO₂, and the molecular weight is approximately 167.00 g/mol. It appears as a colorless to light yellow liquid. This product is known for its high purity and is provided at the best price in the market. The boiling point of ethyl bromoacetate is around 158 - 160 °C, and it has a relative density of about 1.423 g/mL at 25 °C. It is slightly soluble in water but miscible with organic solvents such as ethanol, ether, and benzene.
Ethyl bromoacetate has a wide range of applications in various industries. In the pharmaceutical industry, it serves as an important intermediate for the synthesis of many drugs. It can be used to introduce the carboxymethyl group into different molecules, which is crucial for the formation of certain drug structures. For example, it is involved in the synthesis of some anti - inflammatory and analgesic drugs.
In the field of organic synthesis, it is a key reagent for the preparation of various esters, amides, and other organic compounds. It can react with alcohols to form new esters through esterification reactions, and with amines to produce amides. Moreover, it is used in the synthesis of pesticides. It can be used to create new pesticide molecules with better efficacy and environmental - friendliness.
When using ethyl bromoacetate, it is essential to follow strict safety procedures. First, make sure you are working in a well - ventilated area, preferably under a fume hood, as it is a volatile and potentially harmful chemical. Wear appropriate personal protective equipment, including safety goggles, gloves, and a lab coat.
For laboratory - scale reactions, measure the required amount of ethyl bromoacetate accurately using a pipette or a burette. Add it slowly to the reaction mixture while stirring continuously. The reaction conditions, such as temperature, reaction time, and the presence of catalysts, should be carefully controlled according to the specific reaction requirements. After the reaction is complete, the product can be purified using standard separation and purification techniques, such as distillation, extraction, and recrystallization.
Case 1: Synthesis of a Pharmaceutical Intermediate
A research team was engaged in the synthesis of a new anti - inflammatory drug. They used ethyl bromoacetate as an intermediate. In a round - bottom flask, they added 10 mmol of a specific amine in anhydrous ethanol. The flask was cooled in an ice - bath, and then 10.5 mmol of ethyl bromoacetate was added dropwise over 30 minutes while stirring. After the addition was complete, the reaction mixture was allowed to warm to room temperature and stirred for another 2 hours. The reaction was monitored by thin - layer chromatography (TLC). After the reaction was finished, the solvent was removed under reduced pressure, and the residue was purified by column chromatography. The yield of the desired product was about 80%, which demonstrated the effectiveness of ethyl bromoacetate in this synthetic route.
Case 2: Pesticide Synthesis
A pesticide company was developing a new type of insecticide. They used ethyl bromoacetate to modify a base molecule. In a three - necked flask equipped with a reflux condenser, thermometer, and stirrer, they added the base molecule and a catalytic amount of a Lewis acid in an appropriate organic solvent. Then, ethyl bromoacetate was added slowly while maintaining the reaction temperature at 50 °C. The reaction was carried out for 4 hours. After work - up and purification, the new pesticide showed enhanced insect - killing activity compared to the original base molecule, highlighting the role of ethyl bromoacetate in improving the performance of pesticides.
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