Question

Organic Chemistry Loudon | Parise - seventh Edition presented by Macrnillan Learning Five isomeric alkenes A through E each undergo catalytic hydrogenation to give 2 -methylpentane. The IR spectra of these five alkenes have the key absorptions (in \( \mathrm{cm}^{-1} \) ): \begin{tabular}{|c|c|} \hline Compound & Data \\ \hline Compound A & \( 912(\mathrm{~s}), 994(\mathrm{~s}), 1643(\mathrm{~s}), 3077(\mathrm{~m}) \) \\ \hline Compound B & \( 833(\mathrm{~s}), 1667(\mathrm{w}), 3050( \) weak shoulder on C-H absorption \( ) \) \\ \hline Compound C & \( 714(\mathrm{~s}), 1665(\mathrm{w}), 3010(\mathrm{~m}) \) \\ \hline Compound D & \( 885(\mathrm{~s}), 1650(\mathrm{~m}), 3086(\mathrm{~m}) \) \\ \hline Compound E & \( 967(\mathrm{~s}) \), no absorption 1600 to \( 1700,3040(\mathrm{~m}) \) \\ \hline \end{tabular} Match each compound to the data presented.

          Organic Chemistry
Loudon | Parise - seventh Edition
presented by Macrnillan Learning

Five isomeric alkenes A through E each undergo catalytic hydrogenation to give 2 -methylpentane.
The IR spectra of these five alkenes have the key absorptions (in \( \mathrm{cm}^{-1} \) ):

\begin{tabular}{|c|c|}
\hline Compound & Data \\
\hline Compound A & \( 912(\mathrm{~s}), 994(\mathrm{~s}), 1643(\mathrm{~s}), 3077(\mathrm{~m}) \) \\
\hline Compound B & \( 833(\mathrm{~s}), 1667(\mathrm{w}), 3050( \) weak shoulder on C-H absorption \( ) \) \\
\hline Compound C & \( 714(\mathrm{~s}), 1665(\mathrm{w}), 3010(\mathrm{~m}) \) \\
\hline Compound D & \( 885(\mathrm{~s}), 1650(\mathrm{~m}), 3086(\mathrm{~m}) \) \\
\hline Compound E & \( 967(\mathrm{~s}) \), no absorption 1600 to \( 1700,3040(\mathrm{~m}) \) \\
\hline
\end{tabular}

Match each compound to the data presented.

Organic Chemistry
Loudon | Parise - seventh Edition
presented by Macrnillan Learning

Five isomeric alkenes A through E each undergo catalytic hydrogenation to give 2 -methylpentane.
The IR spectra of these five alkenes have the key absorptions (in cm^-1 ):

Compound Data

Compound A 912( s), 994( s), 1643( s), 3077( m)

Compound B 833( s), 1667(w), 3050( weak shoulder on C-H absorption )

Compound C 714( s), 1665(w), 3010( m)

Compound D 885( s), 1650( m), 3086( m)

Compound E 967( s), no absorption 1600 to 1700,3040( m)

Match each compound to the data presented.

Added by Lisa B.

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