34421-94-8
4-bromobenzaldehyde diethyl acetal
CAS: 34421-94-8
Molecular Formula: C11H15BrO2
34421-94-8 - Names and Identifiers
| Name | 4-bromobenzaldehyde diethyl acetal |
| Synonyms | 4-Bromo-,-Diethoxytoluene 4-bromo-à,à-diethoxytoluene 1-BROMO-4-(DIETHOXYMETHYL)BENZENE 1-bromo-4-(diethoxymethyl)benzene 4-BROMOBENZALDEHYDE DIETHYL ACETAL 4-bromobenzaldehyde diethyl acetal 4-Bromo-alpha,alpha-diethoxytoluene |
| CAS | 34421-94-8 |
| EINECS | 678-205-5 |
| InChI | InChI=1/C11H15BrO2/c1-3-13-11(14-4-2)9-5-7-10(12)8-6-9/h5-8,11H,3-4H2,1-2H3 |
34421-94-8 - Physico-chemical Properties
| Molecular Formula | C11H15BrO2 |
| Molar Mass | 259.14 |
| Density | 1.274g/mLat 25°C(lit.) |
| Melting Point | 99-101/1mmHg |
| Boling Point | 75°C0.2mm Hg(lit.) |
| Flash Point | 221°F |
| Vapor Presure | 0.00819mmHg at 25°C |
| Appearance | Liquid |
| Color | Clear colorless to pale yellow |
| BRN | 2448775 |
| Storage Condition | Argon filled storage |
| Sensitive | Easily absorbing moisture |
| Refractive Index | n20/D 1.513(lit.) |
| MDL | MFCD01863514 |
34421-94-8 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S24/25 - Avoid contact with skin and eyes. S37/39 - Wear suitable 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 | 29110000 |
34421-94-8 - Reference Information
| application | 4-bromobenzaldehyde diethyl acetal can be used as an organic synthesis intermediate and a pharmaceutical intermediate for laboratory research and development and chemical production. |
| preparation | in an absolutely anhydrous instrument, under the protection of nitrogen, cover magnesium chips with 2-methyltetrahydrofuran (10mL), add 4-bromobenzaldehyde, heat to initiate a reaction at 30 ℃, and then drop a solution composed of 4-bromobenzaldehyde and anhydrous 2-methyltetrahydrofuran (40mL), control drop acceleration to keep 35 ℃-40 ℃. After addition, continue the reaction for 1.5h, then cool down to 15 ℃ ~ 20 ℃, and add triethyl orthoformate dropwise within 30 minutes under temperature control conditions. After adding, continue to react at the same temperature for 6 hours. After the reaction is completed, the temperature is reduced to 5 ℃ ~ 7 ℃, 100mL of 10% dilute cold hydrochloric acid is slowly added, the organic layer is separated, the organic layer is washed to neutral 10% sodium carbonate, water is washed, anhydrous sodium sulfate is dried, and the solvent is recovered by distillation to obtain colorless liquid 4-bromobenzaldehyde diethyl acetal. |
Last Update：2024-04-09 21:04:16
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