\(MeOCH _{2} Cl\) \(\xrightarrow{Slow}\)\(\underset{(i)}{\mathop{Me\underset{\,\,\centerdot \,\,\centerdot }{\overset{\centerdot \,\,\centerdot }{\mathop{O}}}\,\overset{+}{\mathop{C{{H}_{2}}}}\,+C{{l}^{-}}}}\,\) \(\leftrightarrow \) \(\underset{(ii)}{\mathop{Me-\underset{\,\,\centerdot \,\,\centerdot }{\overset{+}{\mathop{O}}}\,=C{{H}_{2}}}}\,\)
Though \((ii)\) contains positive charge on oxygen, octet around each atom in \((ii)\) is complete, structure \((ii)\) is more stable than \((i)\).
$\left( C _6 H _5\right)_3 C - Cl \frac{ OH ^{-}}{\text {Pyridine }}\left( C _6 H _5\right)_3 C - OH$
${C_2}{H_5}I\,\xrightarrow{{Alc.\,KOH}}X\xrightarrow{{B{r_2}}}Y\xrightarrow{{KCN}}Z$
$\left( C _6 H _5\right)_3 C - Cl \frac{ OH ^{-}}{\text {Pyridine }}\left( C _6 H _5\right)_3 C - OH$