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Which statement about the aldol condensa...

Which statement about the aldol condensation is correct ?

A

A Lewis acid is commonly used as a catalyst

B

The initial step is probably the formation of a carbanion

C

A Lewis base is employed to induce carbocation formation

D

The carbon chain is lengthend through the elimination of 1 mole of water.

Text Solution

Verified by Experts

The correct Answer is:
B
Enolate ion formed in first step.
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MS CHOUHAN-ALDEHYDES AND KETONES-LEVEL-2
  1. Which statement about the aldol condensation is correct ?

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  2. Select the best choice for example (A to L) from the examples (a to n)...

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  3. The following questions refer to the compounds (A to G) shown below :

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  4. Match of the column :

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  5. Complete the following table.

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  6. Consider the following reactions and answer A and B. Suggest a re...

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  7. Consider the following reactions and answer A and B. Yield of eac...

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  8. Degree of unsaturation present in compound (A + B + C) is ?

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  9. Within each set, which compound should be more reactive toward carbony...

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  10. Match the Column (I) and Column (II). (Matrix)

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  11. Consider reactions A through F. Those carbon atoms undergoing change, ...

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  12. Consider the possible formation of an aldehyde or ketone product when ...

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  13. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  14. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  15. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  16. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  17. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  18. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  19. Match the column :

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  20. Reactant (A) is :

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  21. Product (B) is :

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