4,4-联苯基二甲醛
4,4-Biphenyldicarboxaldehyde
CAS: 66-98-8
Molecular Formula: C14H10O2
4,4-联苯基二甲醛 - Names and Identifiers
| Name | 4,4-Biphenyldicarboxaldehyde |
| Synonyms | 4,4-BISBENZALDEHYDE 4,4-DIFORMYLBIPHENYL 4,4-DIPHENYL DIALDEHYDE 4,4-Biphenyldicarboxaldehyde 4,4-BIPHENYLDICARBOXYALDEHYDE Biphenyl-4,4-Dicarboxyaldehyde (1,1-biphenyl)-4,4-dicarboxaldehyde |
| CAS | 66-98-8 |
| EINECS | 692-556-1 |
| InChIKey | FEHLIYXNTWAEBQ-UHFFFAOYSA-N |
4,4-联苯基二甲醛 - Physico-chemical Properties
| Molecular Formula | C14H10O2 |
| Molar Mass | 210.23 |
| Density | 1.180±0.06 g/cm3(Predicted) |
| Melting Point | 148 °C |
| Boling Point | 391.7±35.0 °C(Predicted) |
| Appearance | Form Crystalline Powder, color Yellow |
| Storage Condition | Inert atmosphere,2-8°C |
| Use | Application 4, 4-biphthalaldehyde is an important organic synthesis intermediate and is one of biphenyl derivatives. Biphenyl derivatives are widely used in medicine, polymer liquid crystals, dyes, pigments, etc. |
4,4-联苯基二甲醛 - Risk and Safety
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| RTECS | DV2800200 |
| HS Code | 29122910 |
4,4-联苯基二甲醛 - Upstream Downstream Industry
4,4-联苯基二甲醛 - Preparation
in the reactor equipped with reflux condenser, add 4mL cyclohexane and 40.0g(0.33mol)SOCl2, stir and cool to about 10 ℃, slowly add 22.0g(0.3mol) of N,N dimethylamide, and form Vilsmeier coordination complex after 0.5-2.0h of reaction; Then 16.0g(0.1mol) of biphenyl solution dissolved in cyclohexane is added dropwise, and after the dropwise addition is completed, raise the temperature to 80-90 ℃, maintain this temperature, stir for 8h, and cool to room temperature. In an ice-water cold bath reactor, ice water is slowly dropped into the reaction solution, after dropping, 30% sodium hydroxide solution is slowly added until the pH reaches 5-6 under the cooling of the ice bath, yellow flake crystals are precipitated, suction filtration, filter cake recrystallization, vacuum drying to obtain 4,4 '-diphthalaldehyde 15.2g,m.p.139-141 ℃. The purity of high liquid phase determination is greater than 98.0%, and the yield is greater than 70%.
Last Update：2024-04-10 22:29:15
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View History
Raw Materials for 4,4-联苯基二甲醛
Benzaldehyde, 4-(tributylstannyl)-
2,6-BIS(TRIFLUOROMETHYL)BROMOBENZENE
4,4-Bis(hydroxymethyl)biphenyl
4,4-BIPHENYLDICARBONITRILE
4-IODOBENZALDEHYDE
4,4-Dibromobiphenyl
Benzaldehyde
4-Bromobenzaldehyde
4-Formylphenylboronic acid
2,6-BIS(TRIFLUOROMETHYL)BROMOBENZENE
4,4-Bis(hydroxymethyl)biphenyl
4,4-BIPHENYLDICARBONITRILE
4-IODOBENZALDEHYDE
4,4-Dibromobiphenyl
Benzaldehyde
4-Bromobenzaldehyde
4-Formylphenylboronic acid
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