4. What Grignard reagent is needed to convert 2-pentanone to 3-methyl-3-hexano A

Question

4. What Grignard reagent is needed to convert 2-pentanone to 3-methyl-3-hexano A) butylmagnesium bromide B) methylmagnesium bromide C) propylmagnesium bromide D) ethylmagnesium bromide E) pentylmagnesium bromide . Which of the following is NOT a true statement? A) An aldehyde reacts with a Grignard reagent to form a secondary alcohol. v B) An ester reacts with a hydride ion to form a secondary alcohol. C) An ester reacts with a Grignard reagent to form a tertiary alcohol. D) A ketone reacts with a Grignard reagent to form a tertiary alcohol. R1 What is the hybridization of the nitrogen atom in an imine? mine group R2 ) s B) sp3 C) p D) spE) sp

Explanation / Answer

4) the answer is C because the double bond O is converted to OH and the propyl group is delivered from the grignard reagent to the substrate.

5) B As ester reacts with grignard to give tert alcohol.

6) E sp2 hybridised

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