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Which of the following nucelophiles favo...

Which of the following nucelophiles favours `S_(N^(2))` mechanism ?

A

`: overset(-)(O)H`

B

`H_(2)overset(..)(O)`

C

`overset(..)(N)H_(3)`

D

`: overset(-)(O)R`

Text Solution

Verified by Experts

The correct Answer is:
C
Strong bases favour `S_(N^(2))` mechanism.
: `OR^(-)` is the strongest base.
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Which of the following factors does not favour S_(N^(1)) mechanism ?

Alkyl halides undergo nucleophilic substitution reactions in which halogen atom is replaced by other atom. RX + Nu:^(-) to Nu-R + X^(-) These reactions follow S_(N)1 and S_(N)2 type mechanism, in which S_(N)1 takes place in two steps while S_(N)2 takes place in single step. Due to their tendency to undergo substitution by a large number of nucleophiles, they form a variety of products. Which of the following is least reactive towards S_(N)2 mechanism ?

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DINESH PUBLICATION-ORGANIC COMPOUNDS WITH FUNCTIONAL GROUP CONTAINING HALOGENS -UNIT TEST - 5
  1. Which of the following nucelophiles favours S(N^(2)) mechanism ?

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  2. Which one is not true for all the members of a homologous series

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  3. The number of secondary atoms in the following compounds are CH(3)un...

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  4. The alkane which has only primary hydrogen atoms is

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  5. Which of the following compounds have isopropyl group

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  6. The IUPAC name of following compound is {:(CH(2)=C-CH(2)-CH(3)),(" ...

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  7. The IUPAC name of is

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  8. The IUPAC name of the compound is

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  9. The IUPAC name of the followin poly functional

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  10. Assingn the IUPAC name to the following compound

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  11. The IUPAC name of

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  12. Mistake in the name but-1-ene ol is

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  13. Racemic mixture is formed ny mixing two:

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  14. Geometrical isomerism is not shon by

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  15. Among the following four structures I to IV I {:(" "CH(3))...

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  16. Which of the following compounds will show meso isomer ?

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  17. Which of the following compounds will show metamerism ?

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  18. Correct order of nucleophilicity is

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  19. The basic strength of underset(I)(CH-=C), underset(II)(CH(2)=CH), un...

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  20. Consider the following carbanions Correct order of stability is

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  21. Different hydrogen in overset(a)(C )H(3)overset(b)(C )H=overset(b)(C...

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