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R-CH2 -CH2 OH can be converted into RCH2...

`R-CH_2 -CH_2 OH` can be converted into `RCH_2 CH_2 COOH`. The correct sequence of reagents is :

A

`PBr_3 , KCN , H^+`

B

`HCN , PBr_3, H^+`

C

`KCN , H^+`

D

`PBr_3 , KCN, H_2`

Text Solution

Verified by Experts

The correct Answer is:
A
`3R - CH_2 - CH_2 OH overset(PBr_3)to 3R - CH_2 - CH_2 Br + H_3 PO_3 overset(KCN)to NH_3 + R-CH_2 - CH_2 - COOH overset(H_2 O)larr R- CH_2 - CH_2 - CN`
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AAKASH SERIES-CARBOXYLIC ACIDS -LEVEL-II LEXTURE SHEET (Exericse-I) (Single or more than one option questions)
  1. Which of the following is the weakest acid ?

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  2. Formic acid is obtained when

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  3. Acetic acid can be prepared by:

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  4. When acetamide is hydrolysed by boiling with water the product obtaine...

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  5. The compound formed by the acid hydrolysis of ethyl acetate is :

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  6. R-CH2 -CH2 OH can be converted into RCH2 CH2 COOH. The correct sequenc...

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  7. Optical activity is expected for :

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  8. Formic acid gives the test of :

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  9. Which of the following reagents is useful to distinguish between HCOOH...

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  10. CH3 CH2 COOH + Br2 overset("Red phosphrous")to

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  11. Which of the following functional group(s) when attached to the para p...

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  12. In which of the following compounds carbon oxygen bond length is short...

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  13. Which of the following acids is the strongest

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  14. Which of the following is/are correct regarding acidic strength.

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  15. Which of the following statements is correct regarding the hydrolysis ...

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  16. The Product is

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  17. Which of the following reactions is correct.

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  18. Which of the following esters is hydrolysed at a fastest rate than oth...

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  19. Which of the following esters undergo alkaline hydrolysis at a fastest...

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  20. Which of the following reactions is/are correctly represented

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