Products
High Purity Ethyl 4-bromobutyrate CAS No. 2969-81-5 with Best Price
Product Description
| Name: | Ethyl 4-bromobutyrate |
| Synonym: | 4-Bromobutanoic acid, ethyl ester; BrCH2CH2CH2C(O)OC2H5;
Butanoic acid, 4-bromo-, ethyl ester; Ethyl 4-bromobutanoate; Ethyl gamma-bromobutyrate; ETHYL 4-BROMO-N-BUTYRATE; ETHYL GAMMA-BROMO-N-BUTYRATE |
| CAS: | 2969-81-5 |
| Formula: | C6H11BrO2 |
| Appearance: | Slightly yellow liquid |
| EINECS: | 221-005-6 |
| HS Code: | 2915900090 |
Preparation Method
In a reaction bottle equipped with a stirrer, thermometer and vent tube, 200 g (2.33 mol) of γ -butyrolactone and 375mL of anhydrous ethanol were added, cooled to 0℃ in an ice salt bath, and dried hydrogen bromide gas was introduced until the reactants remained unchanged, which took about 2 hours. Leave it at 0℃ for 24h. Pour the reactant into 1L cold water, fully stir, separate the organic layer, and extract the water layer with bromoethane twice, 10mL each time. Combining organic layers, washing ethanol with 2% potassium hydroxide solution, dilute hydrochloric acid and water, drying with anhydrous sodium sulfate, recovering solvent, vacuum fractionating, and collecting fractions at 97 ~ 99℃/3.3 kPa to obtain 350 ~ 380 g of ethyl γ-bromobutyrate (1) with a yield of 77% ~ 84%.
Uses
Ethyl 4- bromobutyrate is a carboxylate derivative, which is colorless, transparent to yellow liquid. It can be used as an intermediate of pesticides and medicines, and can be used in laboratory research and development and chemical production.
Security Information
Packing Grade: I; II
Risk Category: 6.1
HS Code: 2915900090
WGK_Germany (Classification List of Water Pollution Substances in Germany): 3
Hazard Class Code: R22; R36/37/38
Safety Instructions: S26-S36-S37/39
Safety sign: S26: In case of contact with eyes, rinse immediately with plenty of water and send to a doctor.
S36: Wear appropriate protective clothing.
Hazard Signs: Xn: Harmful
