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Question
Ph−CH=NO2Hisomerises→3 days(x)(50−50%), Isomer (x) is:
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Solution
The correct option is B Ph−CH2−NO2
This is keto-enol reaction. In fact, the precise name for this type of reaction is Nitro-acinitro tautomerism. These two forms are always in equilibrium with each others so, in product side we will have both the isomers ie, nitro (PH−CH2−NO2) and acinitroform (Ph−CH−NO2H). So, x will be PH−CH2−NO2 and isomer of x refers to PH−CH2−NO2 itself. And PH−CH2−NO2 is optically inactive.
This is keto-enol reaction. In fact, the precise name for this type of reaction is Nitro-acinitro tautomerism. These two forms are always in equilibrium with each others so, in product side we will have both the isomers ie, nitro (PH−CH2−NO2) and acinitroform (Ph−CH−NO2H). So, x will be PH−CH2−NO2 and isomer of x refers to PH−CH2−NO2 itself. And PH−CH2−NO2 is optically inactive.
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