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QJEEM21Ch2668: JEE Main 2021 Chemistry - Class 12 JEEM21Ch2668 Solution: Which of the following reagent is suitable for the preparation…

JEE Main 2021 (Online) 24th February Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 145 English
Which of the following reagent is suitable for the preparation of the product in the above reaction?

Multiple Choice Options

  • A Red P + Cl2
  • B NH2−NH2/C2H5OΘN⊕aN{H_2} - N{H_2}/{C_2}{H_5}\mathop O\limits^\Theta \mathop N\limits^ \oplus a
  • C NaBH4
  • D Ni/H2

Step-by-Step Verified Solution

To reduce the carbonyl groups into alkane, Wolff-Kishner reduction is used, without affecting the double bond.

Wolff-Kishner reagent It utilises hydrazine (NH2 −- NH2) as the reducing agent in the presence of strong base KOH or C2H5 O‾\overline O Na+ in a high boiling protic solvent.

The driving force for the reaction is the conversion of hydrazine to nitrogen gas.

JEE Main 2021 (Online) 24th February Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 145 English Explanation

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