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(R ) -hexan -2-ol overset("conc.HX ") ra...

`(R )` -hexan -`2-ol overset("conc.HX ") rarr`
under `S_(N)2` conditions the product is

A

`100% (R )` -halide

B

`100%(S)`-halide

C

`75%(R )` and `25%(S)`

D

`75%(S)` and `(25%) (R )` halide

Text Solution

Verified by Experts

The correct Answer is:
B
Under `S_(N)2` conditions , the slow step is concerted and at no time does a carbocation form. The `X^(-)` bonds to the back side of the `C`, away from the departing `H_(2)O`, resulting in an `100%` inversion.
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R SHARMA-ALCOHOL, PHENOL AND ETHERS-Follow -Up Test -6
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  2. The major product formed in the reaction CH(3)-underset(OH)underse...

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  3. Trityl chloride (Ph(3)C Cl) is allowed to react with ethyl alcohol in ...

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  4. Lucas reagent produces cloudiness immediately with

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  5. What will be the order of reactivity of the following alcohols towards...

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  6. By which of the following sequence of steps can the alcohol RCH(2)CH(...

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  7. Ethyl alcohol is heated with conc.H(2)SO(4).The product formed is

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  8. HBr reacts slowest with

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  9. 3-Methylbutan-2-ol on reaction with HCl gives predominantly

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  10. In the reaction CH(3)-underset(CH(3))underset(|)overset(CH(3))overse...

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  11. Which of the following reaction of (S)-CH(3)CHD(OH) proceeds with rete...

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  12. Which of th efollowing alcohols are excepted to react with hydrogen ha...

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  13. Which of the following statements is not correct ?

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  14. Which of the following reagents is preferred to synthesize neopentryl ...

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  15. When but -3-en-2-ol reacts with aq HBr , we get

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  16. The product of the reaction of Ph(2)CHCh(2)OH with HBr is

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  17. Place the following alcohols in decreasing order of rate of dehydratio...

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  18. Place the following benzyl alcohols in decreasing order of reaction ra...

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