Molecular Formula | C11H12O2 |
Molar Mass | 176.21 |
Density | 1.057 |
Melting Point | 60-61℃ |
Boling Point | 273℃ |
Flash Point | 152℃ |
Appearance | Solid |
Storage Condition | Sealed in dry,Room Temperature |
Use | Preparation Method methyl p-methyl cinnamate was synthesized using polyethylene glycol (PEG) as phase transfer catalyst and PdCl2 as catalyst in solid-liquid phase. The yield was up to 73. 1%. The reaction has high selectivity and the product is easy to separate. It is a better method for the synthesis of methyl cinnamate. In a ml Four-necked flask equipped with a reflux condenser, thermometer, dropping funnel, add PdCl2 ( 0.15mmol), NaHCO3 (37.5mmol), PEG-800 (5mmol), DMF( 10ml), under the protection of nitrogen, the mixture was heated to 70 ° C., cooled to room temperature, added with iodobenzene (15mmol) and methyl methacrylate (30mmol) via a dropping funnel, and heated to 120 ° C. For 6H. After the reaction solution was suction filtered, water was added to extract from ether, and the solvent of the extract was rotary evaporated. The yield of 1 was 73.1% by GC. The pure product was obtained by column chromatography (petroleum ether: ethyl acetate = 10 :1) and subjected to IR, 1 H NMR and GC-MS measurements. |
Hazard Symbols | Xi - Irritant |
melting point | 60-61℃ |
boiling point | 273℃ |
density | 1.057 |
flash point | 152℃ |
storage conditions | Sealed in dry,Room Temperature |
preparation method | using polyethylene glycol (PEG) as phase transfer catalyst, PdCl2 was used to catalyze the reaction in solid-liquid phase, and methyl p-methyl cinnamate was synthesized with a yield of 73.1%. The reaction has high selectivity and the product is easy to separate. It is another better method for synthesizing methyl p-methyl cinnamate. PdCl2 ( 0.15mmol), NaHCO3 (37.5mmol), PEG-800 (5mmol) and DMF( 10mL) are added to a 100mL four-neck bottle equipped with reflux condenser, thermometer and dropping funnel, heated to 70 ℃ under nitrogen protection, cooled to room temperature, then added iodobenzene (15mmol) and methyl methacrylate (30mmol) through dropping funnel, and heated to 120 ℃ for 6 hours. After the reaction solution is pumped and filtered, water is added to extract the solvent of the extraction solution, and the yield of 1 measured by GC is 73.1%. The pure product was obtained by column chromatography (petroleum ether: ethyl acetate = 10 :1) and determined by IR, 1 HNMR and GC-MS. |