Aldehydes can be prepared by the Wittig reaction using (methoxymethylene)-triphenylphosphorane as the Wittig reagent and then hydrolyzing
Question:
Aldehydes can be prepared by the Wittig reaction using (methoxymethylene)-triphenylphosphorane as the Wittig reagent and then hydrolyzing the product with acid. For example,
(a) How would you prepare the necessary phosphorane?
(b) Propose a mechanism for the hydrolysisstep.
Transcribed Image Text:
OCH3 сно (СоНiзр— сноснз H30+ (Methoxymethylene)- triphenylphosphorane
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a b Ph3P BrCHOCH3 HOCH3 H0H protonation ...View the full answer
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