A) \[\overset{OO}{\mathop{\overset{||||}{\mathop{C{{H}_{3}}-C-C-H}}\,}}\,\]
B) \[\overset{O}{\mathop{\overset{||}{\mathop{C{{H}_{3}}-C-OC{{H}_{3}}}}\,}}\,\]
C) \[\overset{O}{\mathop{\overset{||}{\mathop{C{{H}_{3}}-C-C{{H}_{2}}OH}}\,}}\,\]
D) None of the above
Correct Answer: A
Solution :
\[Se{{O}_{2}}\] oxidises compounds containing active methylene (i.e., \[C{{H}_{2}}\] next to carbonyl group) to another \[CO\] group. \[\overset{O}{\mathop{\overset{||}{\mathop{C{{H}_{3}}-C-C{{H}_{3}}}}\,}}\,\xrightarrow{Se{{O}_{2}}}\overset{OO}{\mathop{\overset{||||}{\mathop{C{{H}_{3}}-C-C-H}}\,}}\,\] \[+Se+{{H}_{2}}O\]
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