4-Bromophenylglyoxal
4-Bromophenylglyoxal hydrate
CAS: 80352-42-7
Molecular Formula: C8H7BrO3
4-Bromophenylglyoxal - Names and Identifiers
| Name | 4-Bromophenylglyoxal hydrate |
| Synonyms | 4-Bromophenylglyoxal 4-Bromophenylglyoxal hydrate 4-BROMOPHENYLGLYOXAL HYDRATE 1-(4-bromophenyl)-2,2-dihydroxyethanone 1-(4-Bromophenyl)-2,2-dihydroxyethanone (4-Bromophenyl)(oxo)acetaldehyde hydrate Ethanone, 1-(4-bromophenyl)-2,2-dihydroxy- |
| CAS | 80352-42-7 |
| InChI | InChI=1/C8H7BrO3/c9-6-3-1-5(2-4-6)7(10)8(11)12/h1-4,8,11-12H |
4-Bromophenylglyoxal - Physico-chemical Properties
| Molecular Formula | C8H7BrO3 |
| Molar Mass | 231.04 |
| Density | 1.743±0.06 g/cm3(Predicted) |
| Melting Point | 132°C |
| Boling Point | 340.0±32.0 °C(Predicted) |
| Flash Point | 159.4°C |
| Vapor Presure | 3.42E-05mmHg at 25°C |
| pKa | 10.42±0.41(Predicted) |
| Storage Condition | 2-8°C |
| Refractive Index | 1.627 |
4-Bromophenylglyoxal - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Hazard Note | Irritant |
4-Bromophenylglyoxal - Reference Information
| Application | 4-bromophenyl glyoxal hydrate can be used as an intermediate in pharmaceutical synthesis, which can be prepared by reacting with selenium dioxide from 4-bromophenyl ketone. |
| preparation | SeO2(1390mg,1.25mmol) is suspended in a mixture of 1,4-dioxane (6mL) and H2O(0.4mL), and 4-bromophenyl ketone (5.0mmol) is added for microwave radiation, hold time (15 minutes) at the set temperature of 100°C. The solution is then cooled to room temperature, the solution is filtered to remove Se, and washed with MeOH(20mL), the combined organic filtrate is concentrated under reduced pressure, then the organic residue is stirred in boiling H2O(35mL), and hot filtered to remove any insoluble precipitate. The aqueous filtrate was cooled on ice to obtain crystals of aryl glyoxal monohydrate product, collected under vacuum filtration, washed with cold H2O, and dried in a vacuum dryer to obtain 4-bromophenyl glyoxal hydrate, white powder (82%). |
Last Update：2024-04-09 01:59:59
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