NEET

Toluene is nitrated and the resulting product is reduced witht in and hydrochloric acid. The product so obtained is diazotised and then heated wth cuprous bromide. The reaction mixture so formed contains

mixture of o- and p-bromotoluenes
mixture of o- and p-dibromobenzenes
mixture of o- and p-bromoanilines
mixture of o- and m-bromotoluenes

Solution

Solution

Solution

Solution

Solution

The bulky methyl groups are at maximum distance from each other.

Solution

Reaction of one molecule of HBr with one molecule of 1, 3-butadiene at 40°C gives predominantly

1-bromo-2-butene under kinetically controlled conditions
3-bromobutene under thermodynamically controlled conditions
1-bromo-2-butene under thermodynamically controlled conditions
3-bromobutene under kinetically controlled conditions

Solution

Solution

II =III ≈ I
II > III > I
III > II > I
I = III > I

Solution

All the three compounds have same electron-releasing groups, but the presence of two such groups in II and III make them more reactive than I. Further note that in m-xylene (II), the two methyl groups cooperate each other at two positions, while in III no position is activated by both the groups.

Solution

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