Direct synthesis of acrylate monomers in heterogeneous continuous flow processes
| Autor: | Jatuporn Salaklang, Tanja Junkers, Matthias Conradi, Veronique Maes, Rudy Dams |
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| Rok vydání: | 2018 |
| Předmět: |
Fluid Flow and Transfer Processes
Acrylate 010405 organic chemistry Chemistry Continuous flow Process Chemistry and Technology Meth 010402 general chemistry Acryloyl chloride 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound Monomer Chemistry (miscellaneous) Yield (chemistry) Slurry Chemical Engineering (miscellaneous) Organic chemistry Amine gas treating |
| Zdroj: | Reaction Chemistry & Engineering. 3:41-47 |
| ISSN: | 2058-9883 |
| DOI: | 10.1039/c7re00120g |
| Popis: | An efficient, safe and convenient laboratory scale continuous flow process for synthesis of (meth)acrylate monomers is described. (Meth)acryloyl chloride is reacted with n-octanol and other alcohols in the presence of triethyl amine in a tubular reactor, resulting in excellent conversions of alcohols to their corresponding esters within 0.5 to 5 minutes of reaction times. The formation of an unwanted side-compound, 3-chloropropionyl ester, is significantly minimized to less than 1% and the formed slurry can be processed without difficulty using an ultrasonication-assisted flow strategy. The synthesis is carried out over a period of 4 h without clogging or pressure build-up, with an operation throughput of 78.6 g h−1 of n-octyl acrylate monomer on laboratory scale, with 95% isolated yield. This procedure provides an efficient alternative synthetic route of functional (meth)acrylate esters, minimizes the side product and facilitates the handling of the formed slurry in the process. Synthesis of various (meth)acrylates is demonstrated, including biobased terpenyl acrylates. This development will play an important role for an on-demand production of (meth)acrylate monomers in fast, reliable and energy-efficient process. |
| Databáze: | OpenAIRE |
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