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(Solved): 2. Starting with 1-bromopropane, outline a synthesis " . . The IR and the 1H NMR spectra of "A" ...



2. Starting with 1-bromopropane, outline a synthesis \( { }^{*} \). . The IR and the \( { }^{1} \mathrm{H} \) NMR spectra o
2. Starting with 1-bromopropane, outline a synthesis " . . The IR and the NMR spectra of "A" with molecular formula are shown below.


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IR Spectrum: In the given IR spectrum there is no peak above 3000 cm-1, which means the compound does not have any hydroxy group.
The presence of IR peaks between 2700-2880 cm-1 indicates the aldehydic    stretching
The presence of an IR peak between 1700-1750 cm-1 indicates the presence of the carbonyl group.


As the compound does not have a hydroxy group, the molecular formula   indicates the presence of either aldehyde or ketone (one oxygen atom is present), that can be either propionaldehyde or 2-propanone.





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