ANSWER: Working backward, we can synthesize the aldehyde from the corresponding alcohol by the Swer coridation or PCC (Sections 12.48, D). The alcohol can be made by treating phenylmagnesium bromide with otirane. [Adding oxitane to a Grignard reagent is a very useful method for adding a -CH CH CH unit to an organic group (Section 12.78)) Phenylmagtiesium hramide can be made in the al way, by treating btomobenene with magnesium in an ether solvent Retrosynthetic Analysis Qua Quang OH Synthesis MO BO 10 HO POO CHA aer Bt Mgar SHALTGE PEROLEVY Provide retroxyethetic analyses and syntheses for each of the following alenkos, tarting with appropriate alkyl or aryl halides. () OH (three ways) (C) {twoway le) OH (two ways) OH (three way d) cheeway) "OH (two way) OH Provide retrochetic analysis and synthesis for each of the following compounds, CICEROLA Permined starting trusterials are phenylaganim bromide, miran, formaldehyde, and cohols or comes of four carbon atoms or fewer You may panic agents and oldining conditions such as Swem cuidation or pudinkem chlorochrome (PCO. OH OH olohoot (b