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
The order of decreasing ease of abstraction of hydrogen atoms in the following molecules
Ha > Hb > Hc
Ha > Hc > Hb
Hb > Ha > Hc
Hc > Hb > Ha
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
In 2-butene, which one of the following statements is true?
C1-C2 bond is a sp3- sp3- -bond
C2- C3 bond is sp3 - sp2- -bond
C1- C2 bond is a sp3 - sp2 - -bond
C1- C2 bond is a sp2- sp2- -bond
The ease of nitration of the following three hydrocarbons follows the order
II - III ≈ I
II > III > I
III > II > I
I = III > II
B.
II > III > I
The ease of nitration of the hydrocarbons depends upon the stability of arenium ion formed.
In compound II, the carbonium ion has two methyl groups capable of partially neutralising the positive charges on the ring carbon atoms.
In compound III, two methyl group has +I effect whereas in compound I, only one methyl group with +I effect is present. Thus, the stability of arenium ion and ease of nitration follows the order II > III > I.
Among the alkenes which one produces tertiary butyl alcohol on acid hydration?
CH3-CH2-CH=CH2
CH3-CH=CH-CH3
(CH3)2C=CH2
CH3-CH=CH2