Draw the major organic product of the indicated reaction conditions. Omit any by-products; just draw the result of the transformation of the starting material.
I need to find the major organic product
Answer to question 1
Answer to question 2
The major organic product of the reaction is given below.
This is Grignard reaction of an ester with excess Grignard reagent to afford a tertiary alcohol. The mechanism of the reaction is given below.
Step 1: The Grignard reagent does a nucleophilic attack on the carbonyl carbon of the ester to give a tetrahedral intermediate.
Step 2: Collapse of the tetrahedral intermediate with loss of methoxide leaving group gives the ketone.
Step 3: The Grignard reagent does a nucleophilic attack on the carbonyl carbon of the ketone to give a tetrahedral intermediate.
Step 4: Protonation of the tetrahedral intermediate gives the tertiary alcohol.
Answer to question 3
When hydrogen halides react with unsymmetrical alkenes, the negative part of the addendum goes to the carbon atom having less number of hydrogen atoms.This is called Markonikov’s rule.
Hence, the major product for the given reaction is according to1) Markonikov’s rule then 2)C-C bond breaks in the ring
It is as shown below: