0

Guest

Courses New

Write short notes on the following: (i) Coupling reaction (ii) Gabriel phthalimide synthesis

Write short notes on the following: (i) Coupling reaction (ii) Gabriel phthalimide synthesis

Grade:upto college level

1 Answers

Gaurav
askIITians Faculty 164 Points
9 years ago
Hello Student
Coupling Reactions of Arene Diazonium Salts
Arenediazonium ions are weak electrophiles; they react with highly reactive aromatic compounds with phenols and tertiary arylamines to yield azo compound. This electrophilic aromatic substitution is called a diazo coupling reaction occurring mainly at p-position.
255-735_2014724-135150668-1873-Capture.PNG
Couplings between arenediazonium cations and phenols take place most rapidly in slightly alkaline solution. If the solution is too alkaline (pH > 10), however, the arenediazonium salt itself reacts with hydroxide ion to form a relatively unreactive diazohydroxide or diazotate ion.

Gabriel Phthalimide Synthesis

This method is used for the preparation of primary amines.Phthalimide on treatment with ethanolic potassium hydroxide formspotassium salt of phthalimide which on heating with alkyl halidefollowed by alkaline hydrolysis produces the corresponding primaryamine.
255-690_2014724-114549412-4597-Y3.GIF

Think You Can Provide A Better Answer ?

Other Related Questions on Physical Chemistry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More