Which of the following minor products could not arise from the halogenation reaction below?
isobutane + Br2 ----> 1-bromo-2-methyl propane + HBr + minor products
a)2,5 dimethylhexane
b)2 bromo-2 methyl propane
c)1,3 dibromo, 2 methyl propane
d) 2,4 dimethylhexane
e)2,2,5 trimethyl pentane
plz can someone help me...i kno its not b) or c) but im leaning towards d) or e) so can someone clarify this.
Thanks :)
шЛУю
To determine which of the given options could not arise from the halogenation reaction, we need to understand the mechanism of the reaction and the structure of the starting material.
In the given reaction, isobutane (also known as 2-methylpropane) reacts with Br2 (bromine) to form 1-bromo-2-methylpropane and HBr (hydrobromic acid), along with some minor products.
Now let's analyze each option one by one:
a) 2,5 dimethylhexane:
This compound is not directly related to the starting material or the products of the reaction. It cannot be formed as a direct result of the halogenation reaction.
b) 2 bromo-2 methyl propane:
This compound is actually one of the products of the reaction, not a minor product. It is formed by the bromination of isobutane. Therefore, it could arise from the given reaction.
c) 1,3 dibromo, 2 methyl propane:
Similar to option b, this is also a product of the reaction and not a minor product. It is formed by the addition of two bromine atoms to the isobutane molecule. Therefore, it could arise from the given reaction.
d) 2,4 dimethylhexane:
This compound is not a direct product of the reaction. The addition of two bromine atoms to isobutane would lead to the formation of 1,3-dibromo-2-methylpropane (option c), not 2,4-dimethylhexane. So, it is unlikely to arise from the given reaction.
e) 2,2,5 trimethylpentane:
This compound is also not a direct product of the reaction. The addition of two bromine atoms to isobutane would lead to the formation of 1,3-dibromo-2-methylpropane (option c), not 2,2,5-trimethylpentane. Therefore, it is unlikely to arise from the given reaction.
In conclusion, options a) (2,5 dimethylhexane) and d) (2,4 dimethylhexane) are the minor products that could not arise from the halogenation reaction.