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What is the best pocedure to synthesis ethyl cinnamate using benzaldehyde and (carbethoxymethylene)triphenylphosphorane (wittig reagent) and chloroform as solvent via wittig reaction?

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  • $\begingroup$ Why are you using chloroform as solvent? It precludes the use of strong bases. $\endgroup$
    – Waylander
    Commented Jan 17, 2018 at 9:40

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A good system for this is using DBU as the base in refluxing chloroform. Bull. Chem. Soc. Japan (2003) 76 1675

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