Advertisements
Advertisements
Question
Write down the products of ozonolysis of 1, 2-dimethylbenzene (o-xylene). How does the result support Kekulé structure for benzene?
Solution
o-xylene has two resonance structures:
All three products, i.e., methyl glyoxal, 1, 2-dimethylglyoxal, and glyoxal are obtained from two Kekule structures. Since all three products cannot be obtained from any one of the two structures, this proves that o-xylene is a resonance hybrid of two Kekule structures (I and II).
APPEARS IN
RELATED QUESTIONS
Why is benzene extra ordinarily stable though it contains three double bonds?
Arrange the following carbanions in order of their decreasing stability.
(A) H3C – C ≡ C–
(B) H – C ≡ C–
(C) \[\ce{H3C - C\overset{-}{H2}}\]
Which of the following are correct?
(i) \[\ce{CH3 - O - CH^{⊕}2}\] is more stable than \[\ce{CH3 - CH^{⊕}2}\]
(ii) (CH3)2CH⊕ is less stable than \[\ce{CH3 - CH2 - CH^{⊕}2}\]
(iii) \[\ce{CH3 = CH2 - CH^{⊕}2}\] is more stable than \[\ce{CH3 - CH2 - CH^{⊕}2}\]
(iv) \[\ce{CH2 - CH^{⊕}}\] is more stable than \[\ce{CH3 - CH^{⊕}2}\]
How will you convert benzene into p – nitrobromobenzene
How will you convert benzene into m – nitrobromobenzene
Arrange the following set of compounds in the order of their decreasing relative reactivity with an electrophile. Give reason.
The relative reactivity of 1°, 2°, 3° hydrogen’s towards chlorination is 1 : 3.8 : 5. Calculate the percentages of all monochlorinated products obtained from 2-methylbutane.
The number ratio of σ and π bonds in benzene is ______.
Mark the incorrect statement from the following:
