A) \[\underset{\text{1-bromo}\,\text{pro-2-ene}}{\mathop{\text{Br-C}{{\text{H}}_{\text{2}}}\text{-CH=C}{{\text{H}}_{\text{2}}}}}\,\]
B) \[\underset{4-bromo-2,\,4-dimethylhexane}{\mathop{\text{C}{{\text{H}}_{\text{3}}}-\text{C}{{\text{H}}_{\text{2}}}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{Br} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,-\text{C}{{\text{H}}_{\text{2}}}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{C}{{\text{H}}_{\text{3}}} \end{smallmatrix}}{\mathop{\text{C}}}\,\text{HC}{{\text{H}}_{\text{3}}}}}\,\]
C)
D) \[\underset{\text{5-oxohexanoic}\,\text{acid}}{\mathop{\text{C}{{\text{H}}_{\text{3}}}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ }\!\!|\!\!\text{ } \\ \text{O} \end{smallmatrix}}{\mathop{\text{C}}}\,-\text{C}{{\text{H}}_{\text{2}}}-\text{C}{{\text{H}}_{\text{2}}}}}\,-\text{C}{{\text{H}}_{\text{2}}}\text{COOH}\]
Correct Answer: A
Solution :
In IUPAC system of nomenclature, preference is given to multiple bond than halogen substituent, so the correct name of \[\underset{\text{3}-\text{bromoprop}-1-\text{ene}}{\mathop{\text{Br}-\overset{\text{3}}{\mathop{\text{C}{{\text{H}}_{\text{2}}}}}\,-\overset{\text{2}}{\mathop{\text{CH}}}\,\text{=}\overset{\text{1}}{\mathop{\text{C}{{\text{H}}_{\text{2}}}}}\,}}\,\]is
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