Chapter 9: Q36. (page 371)
Question: Draw the product of each reaction:
a.
b.
c.
d.
Short Answer
Answer
a. 
b. 
c. 
d.
Step by step solution
Step-by-Step SolutionStep 1: Reaction with acids
Various steps are involved in the reaction of epoxides with acids. In the first step, the protonation of epoxide oxygen with acid leads the epoxide oxygen to be a good nucleophile.
The nucleophile opens the epoxide ring via the backside attack.
Reaction of neutral nucleophile and negatively charged nucleophile with epoxide
The nucleophilic attack takes place before the protonation in the case of the negatively charged nucleophile. In neutral nucleophiles, protonation takes place before the nucleophilic attack.
Product of reactions
a. In the final product, the bromide ion ends up on the more substituted carbon, and the nucleophile ends on less substituted carbon. The product of the reaction is given as:
Product of reaction A
b. In the final product, the cyanide ion attacks at the carbon atom that is less substituted. The reaction is given as:
Product of reaction B
c. Here is a neutral nucleophile, and it strikes on the more substituted carbon atom. The reaction is given as:
Product of reaction C
d. Here is a negatively charged nucleophile, and it strikes at the less substituted carbon atom. The reaction is given as:
Product of reaction D
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