Q21 of 41 Page 396

Write structures of all the alkenes which on hydrogenation give 2-methyl butane.

The parent skeleton structure of 2-methylbutane is : -

On the basis of the above structure, the various alkenes that will give 2-methylbutane on hydrogenation are:-

(i)

(ii)

(iii)

How would you convert the following compounds into benzene?

Ethene

How would you convert the following compounds into benzene?

Hexane

Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile, E⁺

(a) Chlorobenzene, 2,4-dinitrochlorobenzene, p-nitrochlorobenzene

(b) Toluene, p-H₃C – C₆H₄ – NO₂, p-O₂N – C₆H₄ – NO₂.

Out of benzene, m–dinitrobenzene, and toluene which will undergo nitration most easily and why?