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Which of the following is a method of converting a ketone to hydrocarbon with same number of carbon atoms?
- a)Clemensen's reduction
- b)Reimer-Tiemann reaction
- c)Cannizzaro's reaction
- d)Rosenmund's reaction
Correct answer is option 'A'. Can you explain this answer?
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Which of the following is a method of converting a ketone to hydrocarb...
Clemensens Reduction
Clemensens reduction is a method of converting a ketone to hydrocarbon with same number of carbon atoms. This reaction involves the reduction of a ketone to a hydrocarbon by reaction with zinc amalgam and hydrochloric acid.
Mechanism:
1. In the first step, the ketone is converted to its enol tautomer by reaction with zinc amalgam and hydrochloric acid.
2. The enol tautomer is then reduced to a hydrocarbon by reaction with more zinc amalgam and hydrochloric acid.
Overall reaction:
Ketone + Zn/HCl → Enol + Zn/HCl → Hydrocarbon
Advantages:
- High yield of product
- Mild reaction conditions
- No need for strong reducing agents
Limitations:
- Only works for ketones with alpha hydrogen atoms
- Requires careful control of reaction conditions to avoid over-reduction or side reactions
Example:
Acetone can be converted to propane by Clemensens reduction.
Acetone + Zn/HCl → Propene
Overall, Clemensens reduction is a useful method for converting ketones to hydrocarbons with the same number of carbon atoms. The reaction is relatively simple and mild, making it a valuable tool in organic synthesis.
Clemensens reduction is a method of converting a ketone to hydrocarbon with same number of carbon atoms. This reaction involves the reduction of a ketone to a hydrocarbon by reaction with zinc amalgam and hydrochloric acid.
Mechanism:
1. In the first step, the ketone is converted to its enol tautomer by reaction with zinc amalgam and hydrochloric acid.
2. The enol tautomer is then reduced to a hydrocarbon by reaction with more zinc amalgam and hydrochloric acid.
Overall reaction:
Ketone + Zn/HCl → Enol + Zn/HCl → Hydrocarbon
Advantages:
- High yield of product
- Mild reaction conditions
- No need for strong reducing agents
Limitations:
- Only works for ketones with alpha hydrogen atoms
- Requires careful control of reaction conditions to avoid over-reduction or side reactions
Example:
Acetone can be converted to propane by Clemensens reduction.
Acetone + Zn/HCl → Propene
Overall, Clemensens reduction is a useful method for converting ketones to hydrocarbons with the same number of carbon atoms. The reaction is relatively simple and mild, making it a valuable tool in organic synthesis.
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Which of the following is a method of converting a ketone to hydrocarbon with same number of carbon atoms?a)Clemensens reductionb)Reimer-Tiemann reactionc)Cannizzaros reactiond)Rosenmunds reactionCorrect answer is option 'A'. Can you explain this answer?
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