Question
The correct product of the following sequence of reactions
\[{{\left( C{{H}_{3}} \right)}_{2}}CHCOOH\xrightarrow[\left( \text{ii} \right)\,{{H}_{2}}O]{\left( \text{i} \right)\,LiAl{{H}_{4}}}\] \[\xrightarrow{PB{{r}_{3}}}\,\,\xrightarrow[DMSO]{KCN}\,\,\xrightarrow[\Delta ]{{{H}_{2}}{{O}^{+}},\,{{H}^{+}}}\]
A.
\[{{\left( C{{H}_{3}} \right)}_{2}}CHCH\,Br.COOH\]
B.
\[{{\left( C{{H}_{3}} \right)}_{2}}CHC{{H}_{2}}COOH\]
C.
\[{{\left( C{{H}_{3}} \right)}_{2}}CHC{{H}_{2}}C{{H}_{2}}N{{H}_{2}}\]
D.
\[{{\left( C{{H}_{3}} \right)}_{2}}C=CHCOOH\]
Answer :
\[{{\left( C{{H}_{3}} \right)}_{2}}CHC{{H}_{2}}COOH\]
Solution :
\[-COOH\xrightarrow[{{H}_{2}}O]{LiAl{{H}_{4}}}-C{{H}_{2}}OH\] \[\xrightarrow{PB{{r}_{3}}}-C{{H}_{2}}Br\xrightarrow[DMSO]{KCN}\] \[-C{{H}_{2}}CN\xrightarrow[{{H}_{2}}O]{{{H}^{+}}}-C{{H}_{2}}COOH\]