1.

Consider the following reaction H_3C-undersetundersetD|CH-undersetunderset(CH_3)|CH-CH_3+Br to X + HBr . Identify the structure of the major product X

Answer»

`H_3C-undersetunderset(D)(|)CH-undersetunderset(CH_3)|CH-overset(DOT)CH_2`
`H_3C-undersetundersetD|CH-undersetunderset(CH_3)|overset(dot)C-CH_3`
`H_3C-undersetundersetD|overset(dot)C-undersetunderset(CH_3)|CH-CH_3`
`H_3C-overset(dot)CH-undersetunderset(CH_3)|CH-CH_3`

Solution :`CH_3-undersetunderset(D)(|)CH-undersetunderset(CH_3)|overset(dot)C-CH_3` is more stable fre radical among all other FREE RADICALS because t-ALKYL free-radical is more stable than secondary or PRIMARY alkyl free radical (based upon hyperconjugation).


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