
Reaction of primary amines with aldehyde yields
A. Amides
B. Aldimines
C. Nitriles
D. Nitro compounds
Answer
160.8k+ views
Hint: Amine is a basic compound. It acts as a base. The reactions of primary amines are known as carbylamine reactions.
Complete Step by Step Answer:
Primary amine is a base. The nitrogen atom of primary amine contains lone pair of electron which can be donated easily to any species. In aldehyde the carbon atom gets positive charge and the oxygen atom gets negative charge thus the lone pair of nitrogen attacks the carbon atom of aldehyde and ultimately water is removed to form the final product aldimines. Primary amine, a base on reaction with aldehyde, produces aldimine as a major product with water as a minor product. The reaction can be given as follows:
$R-C{{H}_{2}}-N{{H}_{2}}+R-\left( CO \right)-H\to R-C{{H}_{2}}-N=CH-R$
Reaction of primary amines with aldehyde yields Aldimines as a major product.
Thus the correct option is B.
Additional information: Aldehyde is a carbonyl compound. It is more reactive than ketone. The carbon atom on aldehyde acts as an electrophile and the nitrogen atom of primary amine acts as a base or nucleophile. Thus the nitrogen atom of the primary amine can easily attack the aldehyde and remove water.
Note: Primary amine is a compound which contains two hydrogen atoms attached to one nitrogen atom and one alkyl substituent attached with nitrogen atom.
Complete Step by Step Answer:
Primary amine is a base. The nitrogen atom of primary amine contains lone pair of electron which can be donated easily to any species. In aldehyde the carbon atom gets positive charge and the oxygen atom gets negative charge thus the lone pair of nitrogen attacks the carbon atom of aldehyde and ultimately water is removed to form the final product aldimines. Primary amine, a base on reaction with aldehyde, produces aldimine as a major product with water as a minor product. The reaction can be given as follows:
$R-C{{H}_{2}}-N{{H}_{2}}+R-\left( CO \right)-H\to R-C{{H}_{2}}-N=CH-R$
Reaction of primary amines with aldehyde yields Aldimines as a major product.
Thus the correct option is B.
Additional information: Aldehyde is a carbonyl compound. It is more reactive than ketone. The carbon atom on aldehyde acts as an electrophile and the nitrogen atom of primary amine acts as a base or nucleophile. Thus the nitrogen atom of the primary amine can easily attack the aldehyde and remove water.
Note: Primary amine is a compound which contains two hydrogen atoms attached to one nitrogen atom and one alkyl substituent attached with nitrogen atom.
Recently Updated Pages
JEE Main 2021 July 25 Shift 1 Question Paper with Answer Key

JEE Main 2021 July 22 Shift 2 Question Paper with Answer Key

JEE Main Mock Test Series Class 12 Chemistry for FREE

Classification of Drugs Based on Pharmacological Effect, Drug Action

JEE Electricity and Magnetism Important Concepts and Tips for Exam Preparation

JEE Energetics Important Concepts and Tips for Exam Preparation

Trending doubts
JEE Main 2025 Session 2: Application Form (Out), Exam Dates (Released), Eligibility, & More

JEE Main 2025: Derivation of Equation of Trajectory in Physics

Electric Field Due to Uniformly Charged Ring for JEE Main 2025 - Formula and Derivation

Displacement-Time Graph and Velocity-Time Graph for JEE

JEE Main 2026 Syllabus PDF - Download Paper 1 and 2 Syllabus by NTA

JEE Main Eligibility Criteria 2025

Other Pages
JEE Advanced Marks vs Ranks 2025: Understanding Category-wise Qualifying Marks and Previous Year Cut-offs

NCERT Solutions for Class 12 Chemistry Chapter 1 Solutions

JEE Advanced 2025: Dates, Registration, Syllabus, Eligibility Criteria and More

NCERT Solutions for Class 12 Chemistry Chapter 2 Electrochemistry

NCERT Solutions for Class 12 Chemistry Chapter 6 Haloalkanes and Haloarenes

Solutions Class 12 Notes: CBSE Chemistry Chapter 1
