1.

Select the compound from the following which can undergo S_(N)2, but cannot undergo( or gives minor product), elimination on heating with CH_(3)O^(-).

Answer»

2-bromo-3-methylpentane<BR>1-bromo-2,3-dimethylbutane
1-bromo-2,2-dimethylbutane
3-bromo-2-methylpentane.

Solution :`CH_(3)-underset(CH_(3))underset("|")(CH)-underset(CH_(3))underset("|")(CH)-CH_(2)Br`
(primary alkyl halide has more tendency to undergo SUBSTITUTION)
`underset(""CH_(3))underset("|")overset(""CH_(3))overset("|")(CH_(3)-CH_(2)-C-CH_(2)Br`
( primary alkyl halide without `alpha`-hydrogen )


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