Question
Consider the following reactions,
\[\left( \text{i} \right)C{{H}_{2}}=CHCOOH\xrightarrow{\Delta }\] \[C{{H}_{2}}=C{{H}_{2}}\]
Consider the following reactions,
\[\left( \text{i} \right)C{{H}_{2}}=CHCOOH\xrightarrow{\Delta }\] \[C{{H}_{2}}=C{{H}_{2}}\]
\[\left( \text{ii} \right)\] 
\[\left( \text{iii} \right)C{{H}_{3}}CH{{\left( COOH \right)}_{2}}\xrightarrow{\Delta }\] \[C{{H}_{3}}C{{H}_{2}}COOH\]
In which cases, parent compound loses its functional group in preference?
A.
(i), (ii)
B.
(i), (ii), (iii)
C.
(ii), (iii)
D.
(i), (iii)
Answer :
(i), (ii)
Solution :
\[\left( \text{i} \right)\overset{3}{\mathop{C}}\,{{H}_{2}}=\overset{2}{\mathop{C}}\,H\overset{1}{\mathop{C}}\,OOH\to \] \[\overset{2}{\mathop{C}}\,{{H}_{2}}=\overset{1}{\mathop{C}}\,{{H}_{2}}-COOH\] loses its preference
\[\left( \text{ii} \right)\]
\[-COOH\] loses its preference
\[\left( \text{iii} \right)\]
\[\to C{{H}_{3}}C{{H}_{2}}COOH;-COOH\] does not lose its preference
\[\left( \text{i} \right)\overset{3}{\mathop{C}}\,{{H}_{2}}=\overset{2}{\mathop{C}}\,H\overset{1}{\mathop{C}}\,OOH\to \] \[\overset{2}{\mathop{C}}\,{{H}_{2}}=\overset{1}{\mathop{C}}\,{{H}_{2}}-COOH\] loses its preference
\[\left( \text{ii} \right)\]
\[-COOH\] loses its preference\[\left( \text{iii} \right)\]
\[\to C{{H}_{3}}C{{H}_{2}}COOH;-COOH\] does not lose its preference