Question

An alkene having the molecular formula $ {{C}_{9}}{{H}_{18}} $ on ozonolysis gives $ 2, 2- $ dimethyl propanal and $ 2 $ -butanone. The alkene is:

• A. 2, 2, 2-trimethyl-3-hexene
• B. 2, 2, 6-trimethyl-3-hexane
• C. 2, 3, 4-trimethyl-2-hexene
• D. 2, 2, 4-trimethyl-3-hexene
• E. 2, 2,-dimethyl 1-3 heptene

Answer 1

Answer: (D)

$ \underset{2,2,\text{ }4\text{ }trimethyl-2-hexene}{\mathop{\overset{1}{\mathop{C}}\,{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{{{C}^{2}}}}}\,-\overset{3}{\mathop{C}}\,H=\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\overset{4}{\mathop{C}}}\,-\overset{5}{\mathop{C}}\,{{H}_{2}}\overset{6}{\mathop{C}}\,{{H}_{3}}}}\, $