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R-C-=N+2H((i) SnCl(2)//"dil".HCl)/((ii)H...

`R-C-=N+2H((i) SnCl_(2)//"dil".HCl)/((ii)H_(3)O^(+))RCHO + NH_(4)Cl` this reaction is known as

A

Etard reaction

B

Stephen reaction

C

Hell-Vohlard-Zelinsky reaction

D

Balz-Schiemann reaction

Text Solution

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The correct Answer is:
B
When alkyl or aryl cyanide undergoes reduction in the presence of SnCl2'dil. HCI followed by hydrolysis, forms aldehyde. This reaction is known as 'Stephen reaction'.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ORGANIC COMPOUNDS CONTAINING NITROGEN -MHT CET CORNER
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  2. The replacement of diazonium group by fluorine is known as

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  3. R-C-=N+2H((i) SnCl(2)//"dil".HCl)/((ii)H(3)O^(+))RCHO + NH(4)Cl this ...

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  9. Which of the following is the strongest base?

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  10. In the following sequence of reactions CH-underset(NH(2))underset(|)...

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  11. In the following reaction sequence, CH3CHO underset(Ca(OH)2)overset(Cl...

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  12. Which of the following amines gives yellow oily liquid with HNO2 ?

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  13. N-ethyl-N-methylpropan-1-amine is

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  14. What is the end product in the following sequence of operations? C2 ...

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  15. The compound that forms a yellow oily liquid with nitrous acid is

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  17. When acetamide is treated with Br(2) and caustic soda, then we get

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  18. On heating benzyl amine with chloroform and ethanolic KOH, product obt...

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  19. A mixture of ethyl amine and alcoholic KOH on heating gives

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  20. Isopropylamine with excess of acetyl chloride will give?

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