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You are doing a Witting Reaction, in which you react trans-cinnamaldehyde with ylide (benzyltriphenylphosphonium chloride) to...

You are doing a Witting Reaction, in which you react trans-cinnamaldehyde with ylide (benzyltriphenylphosphonium chloride) to get either a (E,E)-1,4-diphenyl-1,3-butadiene or (E,Z)-1,4-diphenyl-1,3-butadiene.

Q) Explain how the reaction can either form an E or Z product depending on the electronic nature of the ylide (EDG/EWG)

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