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You did not prepare your own benzyltriphenylphosphonim chloride (PhCH2PPh3Cl, Wittig salt). Write a reaction showing how the Wittig salt is prepared from benzyl chloride (PhCH2Cl).

Respuesta :

Answer:

The formed wittig reagent is [tex]ph-CH =PPh_{3}[/tex]

Explanation:

Wittig reagent are usually prepared from a phosphonium salt which is obtained by the reaction of triphenyl Phosphine with an alkyl halide via an Sn² reaction.

  The alkyl  phosphonium salt is deprotonated with a strong base (C₄H₉Li)  or, Butyl lithium.  

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