MCQ
Which is incorrect order for keto-enol stability
- A
- ✓$\,\begin{array}{*{20}{c}}
{Ph - C = C{H_2}\, < \,Ph - C - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,} \\
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,\,}
\end{array}$ - C$\begin{array}{*{20}{c}}
{C{H_3} - C - C - C{H_3}} \\
{||\,\,\,\,\,\,\,\,\,\,||} \\
{O\,\,\,\,\,\,\,\,\,O}
\end{array}$ $\begin{array}{*{20}{c}}
{ > {\mkern 1mu} C{H_2} = C - C - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,||\,\,} \\
{\,\,\,\,\,\,\,\,O\,\,\,\,\,\,\,\,O}
\end{array}{\mkern 1mu} $ - D$\begin{array}{*{20}{c}}
{C{H_3} - C - H} \\
{\,\,\,\,||} \\
{\,\,\,\,O}
\end{array}$ $\begin{array}{*{20}{c}}
{ > \,C{H_2} = CH} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH}
\end{array}$
