Chemistry · 2011
NEET 2011 · Mains · Code B · Q25
Consider the reactions: (i) ( CH_3)_2 CH - CH_2 Br → C_2 H_5 OH ( CH_3)_2 CH - CH_2 OC_2 H_5+ HBr (ii) ( CH_3)_2 CH - CH_2 Br → C_2 H_5 O^- ( CH_3)_2…
Consider the reactions :
(i)
$\displaystyle \left(\mathrm{CH}_3\right)_2 \mathrm{CH}-\mathrm{CH}_2 \mathrm{Br} \xrightarrow{\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}}\left(\mathrm{CH}_3\right)_2 \mathrm{CH}-\mathrm{CH}_2 \mathrm{OC}_2 \mathrm{H}_5+\mathrm{HBr}$
(ii)
$\displaystyle \left(\mathrm{CH}_3\right)_2 \mathrm{CH}-\mathrm{CH}_2 \mathrm{Br} \xrightarrow{\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}}\left(\mathrm{CH}_3\right)_2 \mathrm{CH}-\mathrm{CH}_2 \mathrm{OC}_2 \mathrm{H}_5+\mathrm{Br}^{-}$
The mechanisms of reactions (i) and (ii) are respectively :
Official answer
(3)
$\displaystyle \mathrm{S}_{\mathrm{N}} 2$ and $\displaystyle \mathrm{S}_{\mathrm{N}} 2$
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