The total number of optically active compounds formed in the following reaction is :- 
To determine the total number of optically active compounds formed in the given reaction, let's analyze the given compound and the reaction involved.
The reaction involves the hydrogenation of an ester, which forms an alcohol. Considering typical hydrogenation of an achiral substrate involving chiral centers, we analyze the formation of the chiral centers in the product.
In this specific case, let's follow these steps:
- Identify the chiral centers: After the hydrogenation, the carbon atom attached to the hydroxyl group will become a chiral center if it is connected to four different groups.
- Assess optical activity: A compound is optically active if it has at least one chiral center and no plane of symmetry.
For the reaction depicted, consider the product formation and nature of chiral centers:
- Hydrogenation typically results in the transformation of the double bond into a chiral center if applicable.
- In our analysis, we find two chiral centers formed in the product, leading to optically active compounds.
Therefore, the total number of optically active compounds formed is indeed two.
The correct answer is thus Two.
This conclusion is based on the consideration of chiral centers formed during the reaction process and the nature of the reactants involved.
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Important Questions from Organic Chemistry
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