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Reimer-Tiemann reaction of phenol with c...

Reimer-Tiemann reaction of phenol with cholorform and aqueous alkali takes place through the intermediate formation of:

A

carbocations

B

carbanions

C

carbon radicals

D

carbenes

Text Solution

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The correct Answer is:
D
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OP TANDON-BASIC PRINCIPLES OF ORGANIC COMPOUNDS (MECHANISM OF ORGANIC REACTIONS)-OBJECTIVE QUESTIONS (Level-A)
  1. Which one is a nucleophilic substitution reaction among the following ...

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  2. Hypercojnugation is not possible in :

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  3. Reimer-Tiemann reaction of phenol with cholorform and aqueous alkali t...

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  4. The reaction intermediate carbenes are produced from"

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  5. In the following group : -OAc(I),-OMe(II),-OSO(2)(III),-OSO(2)CF(3)(...

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  6. ":CCl"(2) is :

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  7. In additon reactions of alkenes, the Markownikoff's rule follow:

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  8. Addition of HBr to propene in presence of peroxide (antiMarkownikoff's...

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  9. A nucleophile must have :

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  10. In a Friedel-Crafts reaction, the electrophile is:

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  11. Arrange the following carbanions in decreasing orde of stability: HC...

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  12. Arrange the following carbocations in order of increasing stability : ...

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  13. Which one of the following behaves both as a nucleophile and an electr...

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  14. Consider the following bromides: The correct order of S(N^(1)) re...

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  15. Which one is the correct order of decreasing stability of car banions?

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  16. The stability order in the following carbocations, CH(3)CH(2)^(+)"(I...

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  17. Which one of the following carbocations is most stable?

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  18. Which is the weakest base of the following whose pK(b) val-use are?

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  19. Which is decreasing order of acidity in, HCOOH(I), CH(3)COOH(II), CH...

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  20. Which one of the following is the weakest base in queous medium ?

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