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The antihistamine p-methyl diphenhydramine is shown below.
(a) Show how p-methyl diphenhydramine could be prepared from 4-methylbenzaldehyde.
(b) Show how 4-methylbenzaldehyde could be prepared from benzene and compounds containing four carbon atoms or less.
(a) Show how p-methyl diphenhydramine could be prepared from 4-methylbenzaldehyde.
(b) Show how 4-methylbenzaldehyde could be prepared from benzene and compounds containing four carbon atoms or less.