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Total number of enol possible for the co...

Total number of enol possible for the compound formed during given reaction will be (including stereoisomer):
`CH_(3)MgBr+CH_(3)CH_(2)-overset(O)overset(||)(C)-CI rarr`

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To solve the problem, we need to determine the total number of enols that can be formed from the reaction of methyl magnesium bromide (CH₃MgBr) with propanoyl chloride (CH₃CH₂COCl). ### Step-by-Step Solution: 1. **Identify the Reaction**: The reaction involves the addition of CH₃MgBr to CH₃CH₂COCl. This reaction will yield a ketone. The structure of propanoyl chloride is CH₃CH₂C(=O)Cl. 2. **Formation of the Ketone**: When CH₃MgBr reacts with propanoyl chloride, it replaces the chlorine atom and forms a ketone: \[ CH₃CH₂C(=O)Cl + CH₃MgBr \rightarrow CH₃CH₂C(=O)CH₃ + MgClBr \] The resulting ketone is 3-pentanone (CH₃CH₂C(=O)CH₃). 3. **Identify Possible Enols**: Enols are formed from ketones through a process called enolization, where a hydrogen atom is removed from the carbon adjacent to the carbonyl group, and a double bond is formed between that carbon and the carbonyl carbon. 4. **Determine the Structure of the Ketone**: The structure of 3-pentanone is: \[ CH₃-CH₂-C(=O)-CH₃ \] 5. **Enolization**: - The enol form can be derived from the ketone by removing a hydrogen from the carbon adjacent to the carbonyl: - If we remove a hydrogen from the CH₂ group, we get: \[ CH₃-CH=CH(OH)-CH₃ \] - If we remove a hydrogen from the CH₃ group, we get: \[ CH₃-CH₂-C(OH)=CH₂ \] 6. **Identify Stereoisomers**: - For the first enol (from CH₂), we can have two stereoisomers (E and Z forms) due to the presence of different groups attached to the double bond. - For the second enol (from CH₃), there are no stereoisomers since both groups attached to the double bond are the same (two hydrogens). 7. **Count the Total Enols**: - From the first enol, we have 2 stereoisomers (E and Z). - From the second enol, we have 1 form (no stereoisomers). - Thus, the total number of enols including stereoisomers is: \[ 2 \text{ (from first enol)} + 1 \text{ (from second enol)} = 3 \] ### Final Answer: The total number of enols possible for the compound formed during the given reaction, including stereoisomers, is **3**.
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