A) vinyl trimethyl methane
B) 2, 2-dimethyl-3-butene
C) tertiary butyl ethane
D) 3, 3-dimethyl-l-butene
Correct Answer: D
Solution :
Key Idea In a compound which contain double bond, the end of the longest chain which is near the double bond will be given number 1. If compound contains both side chain and double bond prefereiice will be given to double bond. The IUPAC name of\[{{(C{{H}_{3}})}_{3}}C-CH=C{{H}_{2}}\]is as \[\underset{4}{\mathop{C}}\,{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} {{|}^{3}} \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,}}\,-\underset{2}{\mathop{C}}\,H=\underset{1}{\mathop{C}}\,{{H}_{2}}\] 3,3-dimethyl-l-butene
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