10 Halogen Derivaties

2. Do as directed.

v. Complete the following reactions giving major product

1. \[\ce{CH3 - CH = CH2 ->[HBr][peroxide] A ->[alc. KOH] B}\]

2. \[\begin{array}{cc}\ce{CH3 - CH = CH2 ->[Red P/Br2] A ->[Ag2O/H2O]B}\\|\phantom{.........................}\\
\ce{OH\phantom{.......................}}\end{array}\]

3. \[\begin{array}{cc}\ce{CH3\phantom{.....}}\\
|\phantom{.......}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether]}\\
|\phantom{.......}\\
\ce{CH3\phantom{.....}}
\end{array}\]

complete the following reaction
Answer:-

1. \[\ce{\underset{Propene}{CH3 - CH} = CH2 ->[HBr][Peroxide]\underset{\underset{\overset{(A)}{(major product)}}{1-Bromopropane}}{CH3CH2CH2Br} ->[Alc.KOH]\underset{\underset{(B)}{propene}}{CH3CH} = CH2}\]

2. \[\begin{array}{cc}
\ce{CH3-CH=Ch2->[Red P/Br2][(Bromination)]3CH3-CH-CH3 +H3PO3->[Ag2O/H2O]3CH3-CH-CH3}\\
\phantom{}|\phantom{.............................}|\phantom{.....................................}|\phantom{}\\
\ce{\underset{2-Hydroxypropane}{OH}\phantom{................}\underset{2-Bromopropane(A)}{Br}\phantom{.........................}\underset{Propan-2-ol(B)}{OH}}
\end{array}\]

3. \[\begin{array}{cc}
\ce{CH3\phantom{................................}CH3\phantom{...............}CH3}\phantom{.......}\\
|\phantom{....................................}|\phantom{..................}|\phantom{.........}\\
\ce{CH3 - C - CH2 - Cl + 2Na ->[dry ether] CH3 - C - CH2 - CH2 - C - CH3 + 2NaCl}\\
|\phantom{....................................}|\phantom{..................}|\phantom{.........}\\
\ce{\underset{1-Chloro-2,2-dimethyl propane}{CH3}\phantom{................}\underset{\underset{(A)}{2,2,5,5-Tetramethylhexane}}{CH3}\phantom{......}CH3\phantom{................}}
\end{array}\]

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10 Halogen Derivative Page 232