Which of the following option is incorrect regarding A?
A
A contains methyl group
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B
A contains ethyl group
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C
A contains -OH group
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D
A contains a six membered ring
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Solution
The correct option is B A contains ethyl group Grignard reagent is a strong nucleophile. It undergoes nucleophilic substitution reaction when it reacts with an epoxide.
In this reaction, a nucleophilic attack by Grignard reagent, on the ring carbon atom of the epoxide leads to ring opening, followed by formation of a alcohol upon protonation. This is shown in the image below.
the product formed is primary alcohol and it contains a six member ring, one methyl group and and -OH group. It doesnot contain any ethyl group. Hence correct answer is option b.