1,4-dimethylbenzene on heating with anhydrous AlCl3 and HCl produces
1, 2-dimethylbenzene
1, 3-dimethylbenzene
1,2, 3-trimethylbenzene
ethylbenzene
Best reagent for nuclear iodination of aromatic compounds is
KI/CH3COCH3
I2/CH3CN
KI/ CH3COOH
I2/ HNO3
The IUPAC name of the following molecule is
5,6-dimethylhept-2-ene
2,3-dimethylhept-5-ene
5,6-dimethylhept-3-ene
5-iso-propylhex-2-ene
Treatment of with NaNH2/ liq.NH3 gives
D.
The reaction proceeds via benzyne mechanismwith intermediate as .
The best method for the preparation of 2, 2-dimethylbutane is via the reaction of
Me3CBr and MeCH2Br in Na/ether
(Me3C)2CuLi and MeCH2Br
(MeCH2)2CuLi and Me3CBr
Me3CMgI and MeCH2I
The ease of nitration of the following three hydrocarbons follows the order
II - III ≈ I
II > III > I
III > II > I
I = III > II
Friedel-Craft's reaction using MeCl and anhydrous AlCl3 will take place most efficiently with
benzene
nitrobenzene
acetophenone
toluene