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Which of the following pairs of reactant...

Which of the following pairs of reactants is most effective in forming an enamine ?

A

`CH_(3)CH_(2)overset(O)overset(||)CH+[(CH_(3))_(2)CH]_(2)Nh`

B

C

`(CH_(3))_(3)C overset(O)overset(||)CH+(CH_(3))_(2)NH`

D

None of these form an enamine.

Text Solution

Verified by Experts

The correct Answer is:
C
`2^(@)` amine must be less sterically hindered. In option (b) and (c). `2^(@)` amine is being used but due to more reactivity of aldehyde compared to cyclohexanone. Option (c ) is correct.
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DISHA PUBLICATION-ALDEHYDES, KETONES AND CARBOXYLIC ACIDS-Exercise - 1 : Concept Builder (Topicwise) (TOPIC 2 : Properties of Carbonyl Compounds)
  1. In the above reaction, product (B) is :

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  2. Which of the major product of the following reaction? CH(3)-overset(O...

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  3. Arrange the following compounds in order of their reactivity toward Li...

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  4. Which one of the following compounds will be most readily dehydrated?

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  5. Acetone is treated with excess of ethanol in the presence of hydrochlo...

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  6. Consider the reaction RCHO + NH(2)NH(2) rarr R - CH = N NH(2) What...

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  7. Which of the following compounds will give a yellow precipitate with i...

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  8. The order of stability of the following tautomeric compounds is (i)....

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  9. Which one is most reactive towards nucleophilic addition reaction?

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  10. An organic compound 'X' having molecular formula C(5)H(10)O yield phen...

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  11. Reaction of carbonyl compound with one of the following reagents invol...

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  12. Of the following which is the product formed when cyclohexanone under...

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  13. Which of the following pairs of reactants is most effective in forming...

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  14. overset(NH(2)OH)rarr (A) overset(H^(+))rarr (B)overset(LAH)rarr (C ), ...

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  15. X, most likely the compound X is

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  16. The compound shown below is the cyclic hemiacetal of

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  17. What is the product of the following reaction ?

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  18. The reagents employed to carry the following transformation

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  19. The most acidic hydrogen for the following compound

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  20. What is the product of the following reaction?

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