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In S(N^(1)) reaction an optically active...

In `S_(N^(1))` reaction an optically active substrates mainly gives

A

Retention in configuration

B

Inversion in configuration

C

Racemic product

D

No products

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The correct Answer is:
C
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Nucleophilic aliphatic substitution reaction is mainly of two types: S_(N)1 and S_(N)2 . The S_(N)1 mechanism is a two step process. Reaction velocity of S_(N)1 reaction depends only on the concentration of the substrate. Since product formation takes place by the formation of carbocation, optically active substrate gives (+) and (-) forms of the product. In most of the cases the product usually consits of 5-20% inverted product and 80-95% racemised species. The more stable the carbocation, the greater is the proportion of racemisation. In solvolysis reaction, the more nucleophilic the solvent, the greater is the proportion of inversion. For the gives reaction, Which substrate will give maximum racemisation?

Nucleophilic aliphatic substitution reaction is mainly of two types: S_(N)1 and S_(N)2 . The S_(N)1 mechanism is a two step process. Reaction velocity of S_(N)1 reaction depends only on the concentration of the substrate. Since product formation takes place by the formation of carbocation, optically active substrate gives (+) and (-) forms of the product. In most of the cases the product usually consits of 5-20% inverted product and 80-95% racemised species. The more stable the carbocation, the greater is the proportion of racemisation. In solvolysis reaction, the more nucleophilic the solvent, the greater is the proportion of inversion. Which one of the following compound will give S_(N)1 reaction predominantly?

Nucleophilic aliphatic substitution reaction is mainly of two types: S_(N)1 and S_(N)2 . The S_(N)1 mechanism is a two step process. Reaction velocity of S_(N)1 reaction depends only on the concentration of the substrate. Since product formation takes place by the formation of carbocation, optically active substrate gives (+) and (-) forms of the product. In most of the cases the product usually consits of 5-20% inverted product and 80-95% racemised species. The more stable the carbocation, the greater is the proportion of racemisation. In solvolysis reaction, the more nucleophilic the solvent, the greater is the proportion of inversion. Which of the following compounds will give S_(N)1 and S_(N)2 reactions with considerable rate? I. C_(6)H_(5)-CH_(2)-Br (II) CH_(2)=CH-CH_(2)-Br (III) CH_(3)-CH(Br)CH_(3) (IV) Select the correct answer from teh codes given below

Statement-I: Nucleophilic substitution reaction on an optically active alkyl halide gives a mixture of enantiomers. Because Statement-II: The reaction occurs by S_(N^(1)) mechanism.

The reaction gives mainly

ALLEN-ALKYL AND ARYL HALIDE-EXERCISE
  1. Following reaction is

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  2. On treatment with chlorine in presence of sunlight toluene gives the p...

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  3. In S(N^(1)) reaction an optically active substrates mainly gives

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  4. Alkyl iodide can be prepared by:-

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  5. Which of the following reagents can be used to prepare and alkyl halid...

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  6. Which of the following reactions depict the nucleophilic substitition ...

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  7. For an S(N^(2)) reaction which of the following statements are true:-

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  8. Which of the following is an S(N^(2)) reaction:-

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  9. Match the column I with column II.

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  10. Match the following.

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  11. Match the following.

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  12. Math the following.

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  13. Statement-I: Iodination of akanes is carried out by heat in presence o...

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  14. Statement-I: Chloropropane has higher boiling point than chloroethane....

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  15. Statement-I: Polar solvent slows down S(N^(2)) reaction. Because Sta...

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  16. Statement-I:Primay benzylic halides are more reactive than primary alk...

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  17. Statement-I: Vinylic halides are reactive towards nucleophilic substit...

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  18. Statement-I: Aryl halidea undergo electrophilic substitution less radi...

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  19. Statement-I: Optically active 2-idoibutane on treatment with NaI in ac...

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  20. Statement-I: Free radical chlorination of n-butane gives 72% of 2-chlo...

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