Find out the major products from the following reaction sequence.
The Correct Option is D
Solution and Explanation
The reaction proceeds as follows:
1. \(\text{NaCN}\) reacts with the carbonyl group to form a cyanohydrin (\(\text{-CN}\) and \(\text{-OH}\) groups on the same carbon).
2. Ethanol in the presence of \(\text{H}_2\text{O}^+\) hydrolyzes the cyanohydrin to form a carboxylic acid group (\(\text{-COOH}\)) and retains the hydroxyl group.
Thus, the major products are as shown in option (4), where the carboxylic acid (\(\text{-COOH}\)) and hydroxyl (\(\text{-OH}\)) groups are appropriately positioned.
Top Questions on reaction mechanism
- Given below are two statements:
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Statement II: R–CN hydrolyses under acidic medium to produce a compound which on treatment with SOCl$_2$, followed by the addition of NH$_3$ gives another compound (X). This compound (X) on treatment with NaOCl/NaOH gives a product, that on treatment with CHCl$_3$/KOH/$\Delta$ produces R–NC.
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Concepts Used:
Hydrocarbons - Reaction Mechanism
Hydrocarbons are organic compounds that are entirely made up of only two kinds of atoms – carbon and hydrogen. Typically, hydrocarbons are colourless gases that have very weak odours.
Mechanism of electrophilic substitution reactions:
According to experimental evidences, SE (S = substitution; E = electrophilic) reactions are supposed to proceed via the following three steps:
- Generation of the electrophile
- Formation of carbocation intermediate
- Removal of proton from the carbocation interm